VB.Net/GUI/Drag Drop

Drag and Drop between Labels

Imports System
Imports System.Runtime.InteropServices
Imports System.Drawing
Imports System.ruponentModel
Imports System.Windows.Forms
Imports System.IO
Imports System.Xml.Serialization
Public Class MainClass
    
    Shared Sub Main(ByVal args As String())
        Dim myform As New Form1()
        Application.Run(myform)            
    End Sub
End Class
Public Class Form1
    " Start a drag.
    Private Sub lblDragSource_MouseDown(ByVal sender As Object, _
     ByVal e As System.Windows.Forms.MouseEventArgs) _
     Handles lblDragSource.MouseDown
        lblDragSource.DoDragDrop("Data!", DragDropEffects.Copy)
    End Sub
    " Make sure the drag is coming from lblDragSource.
    Private Sub lblDropTarget_DragEnter(ByVal sender As Object, _
     ByVal e As System.Windows.Forms.DragEventArgs) _
     Handles lblDropTarget.DragEnter
        e.Effect = DragDropEffects.Copy
    End Sub
    " Display the dropped data.
    Private Sub lblDropTarget_DragDrop(ByVal sender As Object, _
     ByVal e As System.Windows.Forms.DragEventArgs) _
     Handles lblDropTarget.DragDrop
        MessageBox.Show(e.Data.GetData("Text").ToString)
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Public Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.lblDragSource = New System.Windows.Forms.Label
        Me.lblDropTarget = New System.Windows.Forms.Label
        Me.SuspendLayout()
        "
        "lblDragSource
        "
        Me.lblDragSource.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDragSource.Location = New System.Drawing.Point(16, 16)
        Me.lblDragSource.Name = "lblDragSource"
        Me.lblDragSource.Size = New System.Drawing.Size(96, 64)
        Me.lblDragSource.TabIndex = 0
        Me.lblDragSource.Text = "Drag Source"
        Me.lblDragSource.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        "
        "lblDropTarget
        "
        Me.lblDropTarget.AllowDrop = True
        Me.lblDropTarget.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDropTarget.Location = New System.Drawing.Point(168, 16)
        Me.lblDropTarget.Name = "lblDropTarget"
        Me.lblDropTarget.Size = New System.Drawing.Size(96, 64)
        Me.lblDropTarget.TabIndex = 1
        Me.lblDropTarget.Text = "Drop Target"
        Me.lblDropTarget.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(279, 95)
        Me.Controls.Add(Me.lblDropTarget)
        Me.Controls.Add(Me.lblDragSource)
        Me.Name = "Form1"
        Me.Text = "LabelDrag"
        Me.ResumeLayout(False)
    End Sub
    Friend WithEvents lblDragSource As System.Windows.Forms.Label
    Friend WithEvents lblDropTarget As System.Windows.Forms.Label
End Class

Drag and drop between Two RichTextBox

Imports System.Drawing.Drawing2D
Imports System
Imports System.Drawing.Text
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Math
Imports System.Xml.Serialization
Imports System.IO
Public Class MainClass
   Shared Sub Main()
       Dim form1 As Form = New Form1()
       Application.Run(form1)
   End Sub 
End Class
Public Class Form1
    Private Sub frmDragRichText_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        " Give the RichTextBox some text.
        Dim txt As String = "www.vbex.ru"
        rchSource.Text = txt
        rchSource.Select(0, 0)
    End Sub
    " Start a drag.
    Private Sub lblDragSource_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles lblDragSource.MouseDown
        " Make a DataObject.
        Dim data_object As New DataObject
        data_object.SetData(DataFormats.Text, rchSource.Text)
        lblDragSource.DoDragDrop(data_object, DragDropEffects.Copy)
    End Sub
    " Allow drop of Rtf, Text, and HTML.
    Private Sub lblDropTarget_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles lblDropTarget.DragEnter
        If e.Data.GetDataPresent(DataFormats.Text) Then
            e.Effect = DragDropEffects.Copy
        End If
    End Sub
    " Display whatever data we can.
    Private Sub lblDropTarget_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles lblDropTarget.DragDrop
        If e.Data.GetDataPresent(DataFormats.Text) Then
            lblTarget.Text = e.Data.GetData(DataFormats.Text).ToString
        Else
            lblTarget.Text = ""
        End If
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Public Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.lblTarget = New System.Windows.Forms.Label
        Me.lblDropTarget = New System.Windows.Forms.Label
        Me.lblDragSource = New System.Windows.Forms.Label
        Me.rchSource = New System.Windows.Forms.RichTextBox
        Me.SuspendLayout()
        "
        "lblTarget
        "
        Me.lblTarget.Anchor = CType(((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.lblTarget.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblTarget.Location = New System.Drawing.Point(0, 232)
        Me.lblTarget.Margin = New System.Windows.Forms.Padding(3, 1, 3, 2)
        Me.lblTarget.Name = "lblTarget"
        Me.lblTarget.Size = New System.Drawing.Size(296, 28)
        Me.lblTarget.TabIndex = 11
        "
        "lblDropTarget
        "
        Me.lblDropTarget.AllowDrop = True
        Me.lblDropTarget.Anchor = CType((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.lblDropTarget.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDropTarget.Location = New System.Drawing.Point(200, 32)
        Me.lblDropTarget.Name = "lblDropTarget"
        Me.lblDropTarget.Size = New System.Drawing.Size(96, 48)
        Me.lblDropTarget.TabIndex = 9
        Me.lblDropTarget.Text = "Drop Target"
        Me.lblDropTarget.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        "
        "lblDragSource
        "
        Me.lblDragSource.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDragSource.Location = New System.Drawing.Point(0, 32)
        Me.lblDragSource.Name = "lblDragSource"
        Me.lblDragSource.Size = New System.Drawing.Size(96, 48)
        Me.lblDragSource.TabIndex = 8
        Me.lblDragSource.Text = "Drag Source"
        Me.lblDragSource.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        "
        "rchSource
        "
        Me.rchSource.AllowDrop = True
        Me.rchSource.Anchor = CType(((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.rchSource.Location = New System.Drawing.Point(0, 0)
        Me.rchSource.Name = "rchSource"
        Me.rchSource.Size = New System.Drawing.Size(296, 28)
        Me.rchSource.TabIndex = 7
        Me.rchSource.Text = ""
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(296, 345)
        Me.Controls.Add(Me.lblTarget)
        Me.Controls.Add(Me.lblDropTarget)
        Me.Controls.Add(Me.lblDragSource)
        Me.Controls.Add(Me.rchSource)
        Me.Name = "Form1"
        Me.Text = "DragRichText"
        Me.ResumeLayout(False)
    End Sub
    Friend WithEvents lblTarget As System.Windows.Forms.Label
    Friend WithEvents lblDropTarget As System.Windows.Forms.Label
    Friend WithEvents lblDragSource As System.Windows.Forms.Label
    Friend WithEvents rchSource As System.Windows.Forms.RichTextBox
End Class

Drag and drop serialized Object base on XML

Imports System
Imports System.Collections
Imports System.Data
Imports System.Xml.Serialization
Imports System.Drawing
Imports System.Windows.Forms
Imports System.ruponentModel
Imports System.Drawing.Drawing2D
Imports System.IO
Public Class MainClass
    
    Shared Sub Main()
        Dim form1 As Form = New Form1
        Application.Run(form1)

    End Sub
End Class

Public Class Form1
    <Serializable()> _
    Public Class Student
        Public FirstName As String
        Public LastName As String
        Public Sub New()
        End Sub
        Public Sub New(ByVal first_name As String, ByVal last_name As String)
            FirstName = first_name
            LastName = last_name
        End Sub
    End Class
    Private Sub lblDragSource_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles lblDragSource.MouseDown
        Dim emp As New Student(txtFirstName.Text, txtLastName.Text)
        Dim data_object As New DataObject()
        data_object.SetData("Student", emp)
        If lblDragSource.DoDragDrop(data_object, _
            DragDropEffects.Copy Or DragDropEffects.Move) = DragDropEffects.Move _
        Then
            txtFirstName.Text = ""
            txtLastName.Text = ""
        End If
    End Sub
    Private Sub lblDropTarget_DragOver(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles lblDropTarget.DragOver
        If e.Data.GetDataPresent("Student") Then
            Const KEY_CTRL As Integer = 8
            If (e.KeyState And KEY_CTRL) <> 0 Then
                e.Effect = DragDropEffects.Copy
            Else
                e.Effect = DragDropEffects.Move
            End If
        End If
    End Sub
    Private Sub lblDropTarget_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles lblDropTarget.DragDrop
        Dim emp As Student = DirectCast(e.Data.GetData("Student"), Student)
        lblFirstName.Text = emp.FirstName
        lblLastName.Text = emp.LastName
    End Sub
    Private Sub btnShowSerialization_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnShowSerialization.Click
        Dim emp As New Student(txtFirstName.Text, txtLastName.Text)
        Dim string_writer As New StringWriter()
        Dim serializer As New XmlSerializer(GetType(Student))
        serializer.Serialize(string_writer, emp)
        MessageBox.Show(string_writer.ToString, _
            "Serialization", MessageBoxButtons.OK, _
            MessageBoxIcon.Information)
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Public Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.lblLastName = New System.Windows.Forms.Label
        Me.lblFirstName = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.Label4 = New System.Windows.Forms.Label
        Me.btnShowSerialization = New System.Windows.Forms.Button
        Me.txtLastName = New System.Windows.Forms.TextBox
        Me.txtFirstName = New System.Windows.Forms.TextBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label1 = New System.Windows.Forms.Label
        Me.lblDropTarget = New System.Windows.Forms.Label
        Me.lblDragSource = New System.Windows.Forms.Label
        Me.SuspendLayout()
        "
        "lblLastName
        "
        Me.lblLastName.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblLastName.Location = New System.Drawing.Point(288, 104)
        Me.lblLastName.Name = "lblLastName"
        Me.lblLastName.Size = New System.Drawing.Size(136, 20)
        Me.lblLastName.TabIndex = 28
        Me.lblLastName.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        "
        "lblFirstName
        "
        Me.lblFirstName.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblFirstName.Location = New System.Drawing.Point(288, 80)
        Me.lblFirstName.Name = "lblFirstName"
        Me.lblFirstName.Size = New System.Drawing.Size(136, 20)
        Me.lblFirstName.TabIndex = 27
        Me.lblFirstName.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        "
        "Label3
        "
        Me.Label3.AutoSize = True
        Me.Label3.Location = New System.Drawing.Point(224, 104)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(54, 13)
        Me.Label3.TabIndex = 26
        Me.Label3.Text = "Last Name"
        "
        "Label4
        "
        Me.Label4.AutoSize = True
        Me.Label4.Location = New System.Drawing.Point(224, 80)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(53, 13)
        Me.Label4.TabIndex = 25
        Me.Label4.Text = "First Name"
        "
        "btnShowSerialization
        "
        Me.btnShowSerialization.Location = New System.Drawing.Point(56, 136)
        Me.btnShowSerialization.Name = "btnShowSerialization"
        Me.btnShowSerialization.Size = New System.Drawing.Size(200, 24)
        Me.btnShowSerialization.TabIndex = 24
        Me.btnShowSerialization.Text = "Show Serialization"
        "
        "txtLastName
        "
        Me.txtLastName.Location = New System.Drawing.Point(72, 104)
        Me.txtLastName.Name = "txtLastName"
        Me.txtLastName.Size = New System.Drawing.Size(136, 20)
        Me.txtLastName.TabIndex = 23
        Me.txtLastName.Text = "Last Name"
        "
        "txtFirstName
        "
        Me.txtFirstName.Location = New System.Drawing.Point(72, 80)
        Me.txtFirstName.Name = "txtFirstName"
        Me.txtFirstName.Size = New System.Drawing.Size(136, 20)
        Me.txtFirstName.TabIndex = 22
        Me.txtFirstName.Text = "First Name"
        "
        "Label2
        "
        Me.Label2.AutoSize = True
        Me.Label2.Location = New System.Drawing.Point(8, 104)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(54, 13)
        Me.Label2.TabIndex = 21
        Me.Label2.Text = "Last Name"
        "
        "Label1
        "
        Me.Label1.AutoSize = True
        Me.Label1.Location = New System.Drawing.Point(8, 80)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(53, 13)
        Me.Label1.TabIndex = 20
        Me.Label1.Text = "First Name"
        "
        "lblDropTarget
        "
        Me.lblDropTarget.AllowDrop = True
        Me.lblDropTarget.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDropTarget.Location = New System.Drawing.Point(224, 8)
        Me.lblDropTarget.Name = "lblDropTarget"
        Me.lblDropTarget.Size = New System.Drawing.Size(200, 64)
        Me.lblDropTarget.TabIndex = 19
        Me.lblDropTarget.Text = "Drop Target"
        "
        "lblDragSource
        "
        Me.lblDragSource.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDragSource.Location = New System.Drawing.Point(8, 8)
        Me.lblDragSource.Name = "lblDragSource"
        Me.lblDragSource.Size = New System.Drawing.Size(200, 64)
        Me.lblDragSource.TabIndex = 18
        Me.lblDragSource.Text = "Drag Source"
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(433, 177)
        Me.Controls.Add(Me.lblLastName)
        Me.Controls.Add(Me.lblFirstName)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Label4)
        Me.Controls.Add(Me.btnShowSerialization)
        Me.Controls.Add(Me.txtLastName)
        Me.Controls.Add(Me.txtFirstName)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.lblDropTarget)
        Me.Controls.Add(Me.lblDragSource)
        Me.Name = "Form1"
        Me.Text = "DragStudent2"
        Me.ResumeLayout(False)
        Me.PerformLayout()
    End Sub
    Friend WithEvents lblLastName As System.Windows.Forms.Label
    Friend WithEvents lblFirstName As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents btnShowSerialization As System.Windows.Forms.Button
    Friend WithEvents txtLastName As System.Windows.Forms.TextBox
    Friend WithEvents txtFirstName As System.Windows.Forms.TextBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents lblDropTarget As System.Windows.Forms.Label
    Friend WithEvents lblDragSource As System.Windows.Forms.Label
End Class

Drag and drop TreeView

Imports System
Imports System.Collections
Imports System.Data
Imports System.Drawing
Imports System.Windows.Forms
Imports System.ruponentModel
Imports System.Drawing.Drawing2D
Imports System.IO
Public Class MainClass
    
    Shared Sub Main()
        Dim form1 As Form = New Form1
        Application.Run(form1)

    End Sub
End Class


Public Class Form1
    Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
    Public Sub New()
        MyBase.New()
        "This call is required by the Windows Form Designer.
        InitializeComponent()
        "Add any initialization after the InitializeComponent() call
    End Sub
    "Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    Friend WithEvents treeOne As System.Windows.Forms.TreeView
    Friend WithEvents Splitter1 As System.Windows.Forms.Splitter
    Friend WithEvents treeTwo As System.Windows.Forms.TreeView
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.treeOne = New System.Windows.Forms.TreeView()
        Me.Splitter1 = New System.Windows.Forms.Splitter()
        Me.treeTwo = New System.Windows.Forms.TreeView()
        Me.SuspendLayout()
        "
        "treeOne
        "
        Me.treeOne.Dock = System.Windows.Forms.DockStyle.Left
        Me.treeOne.HideSelection = False
        Me.treeOne.ImageIndex = -1
        Me.treeOne.Location = New System.Drawing.Point(5, 5)
        Me.treeOne.Name = "treeOne"
        Me.treeOne.SelectedImageIndex = -1
        Me.treeOne.Size = New System.Drawing.Size(236, 351)
        Me.treeOne.TabIndex = 0
        "
        "Splitter1
        "
        Me.Splitter1.Location = New System.Drawing.Point(241, 5)
        Me.Splitter1.Name = "Splitter1"
        Me.Splitter1.Size = New System.Drawing.Size(3, 351)
        Me.Splitter1.TabIndex = 2
        Me.Splitter1.TabStop = False
        "
        "treeTwo
        "
        Me.treeTwo.Dock = System.Windows.Forms.DockStyle.Fill
        Me.treeTwo.HideSelection = False
        Me.treeTwo.ImageIndex = -1
        Me.treeTwo.Location = New System.Drawing.Point(244, 5)
        Me.treeTwo.Name = "treeTwo"
        Me.treeTwo.SelectedImageIndex = -1
        Me.treeTwo.Size = New System.Drawing.Size(271, 351)
        Me.treeTwo.TabIndex = 3
        "
        "TreeViewExample
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 14)
        Me.ClientSize = New System.Drawing.Size(520, 366)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.treeTwo, Me.Splitter1, Me.treeOne})
        Me.DockPadding.Bottom = 10
        Me.DockPadding.Left = 5
        Me.DockPadding.Right = 5
        Me.DockPadding.Top = 5
        Me.Font = New System.Drawing.Font("Tahoma", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Name = "TreeViewExample"
        Me.Text = "TreeView Example"
        Me.ResumeLayout(False)
    End Sub
#End Region
    Private Sub TreeViewExample_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim node As TreeNode
        node = treeOne.Nodes.Add("Node 1")
        node.Nodes.Add("Leap 1")
        node.Nodes.Add("Leap 2")
        node.Expand()
        node = treeTwo.Nodes.Add("Node 2")
        node.Nodes.Add("Leap 3")
        node.Nodes.Add("Leap 4")
        node.Expand()
        treeTwo.AllowDrop = True
        treeOne.AllowDrop = True
    End Sub
    Private Sub treeOne_MouseDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles treeOne.MouseDown, treeTwo.MouseDown
        Dim tree As TreeView = CType(sender, TreeView)
        Dim node As TreeNode
        node = tree.GetNodeAt(e.X, e.Y)
        tree.SelectedNode = node
        If Not node Is Nothing Then
            tree.DoDragDrop(node.Clone(), DragDropEffects.Copy)
        End If
    End Sub
    Private Sub treeTwo_DragOver(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles treeOne.DragOver, treeTwo.DragOver
        Dim tree As TreeView = CType(sender, TreeView)
        e.Effect = DragDropEffects.None
        If Not e.Data.GetData(GetType(TreeNode)) Is Nothing Then
            Dim pt As New Point(e.X, e.Y)
            pt = tree.PointToClient(pt)
            Dim node As TreeNode = tree.GetNodeAt(pt)
            If Not node Is Nothing Then
                e.Effect = DragDropEffects.Copy
                tree.SelectedNode = node
            End If
        End If
    End Sub
    Private Sub treeTwo_DragDrop(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles treeOne.DragDrop, treeTwo.DragDrop
        Dim tree As TreeView = CType(sender, TreeView)
        Dim pt As New Point(e.X, e.Y)
        pt = tree.PointToClient(pt)
        Dim node As TreeNode = tree.GetNodeAt(pt)
        node.Nodes.Add(e.Data.GetData(GetType(TreeNode)))
        node.Expand()
    End Sub
End Class

ListBox drag and drop to a TextBox

Imports System
Imports System.Drawing
Imports System.Reflection
Imports System.Windows.Forms
public class MainClass
   Shared Sub Main()
      Dim form1 As Form = New Form1
      Application.Run(form1)
   End Sub
End Class


Public Class Form1
    Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
    Public Sub New()
        MyBase.New()
        "This call is required by the Windows Form Designer.
        InitializeComponent()
        "Add any initialization after the InitializeComponent() call
    End Sub
    "Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    Friend WithEvents ListBox1 As System.Windows.Forms.ListBox
    Friend WithEvents TreeView1 As System.Windows.Forms.TreeView
    Friend WithEvents DestinationTextBox As System.Windows.Forms.TextBox
    Friend WithEvents SourceTextBox As System.Windows.Forms.TextBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.DestinationTextBox = New System.Windows.Forms.TextBox()
        Me.SourceTextBox = New System.Windows.Forms.TextBox()
        Me.ListBox1 = New System.Windows.Forms.ListBox()
        Me.TreeView1 = New System.Windows.Forms.TreeView()
        Me.SuspendLayout()
        "
        "DestinationTextBox
        "
        Me.DestinationTextBox.AllowDrop = True
        Me.DestinationTextBox.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.DestinationTextBox.Location = New System.Drawing.Point(4, 166)
        Me.DestinationTextBox.Multiline = True
        Me.DestinationTextBox.Name = "DestinationTextBox"
        Me.DestinationTextBox.Size = New System.Drawing.Size(354, 195)
        Me.DestinationTextBox.TabIndex = 1
        Me.DestinationTextBox.Text = ""
        "
        "SourceTextBox
        "
        Me.SourceTextBox.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.SourceTextBox.Location = New System.Drawing.Point(4, 4)
        Me.SourceTextBox.Multiline = True
        Me.SourceTextBox.Name = "SourceTextBox"
        Me.SourceTextBox.ScrollBars = System.Windows.Forms.ScrollBars.Vertical
        Me.SourceTextBox.Size = New System.Drawing.Size(354, 144)
        Me.SourceTextBox.TabIndex = 2
        Me.SourceTextBox.Text = "Use your right or left key to drag and drop item in left ListBox or Tree to the bottom TextBox."
        "
        "ListBox1
        "
        Me.ListBox1.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.ListBox1.ItemHeight = 14
        Me.ListBox1.Items.AddRange(New Object() {"Item 1", "Item 2", "Item 3", "Item 4", "Item 5", "Item 6", "Item 7", "Item 8", "Item 9", "Item 10", "Item 11", "Item 12", "Item 13", "Item 14", "Item 15"})
        Me.ListBox1.Location = New System.Drawing.Point(370, 4)
        Me.ListBox1.Name = "ListBox1"
        Me.ListBox1.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended
        Me.ListBox1.Size = New System.Drawing.Size(190, 144)
        Me.ListBox1.TabIndex = 3
        "
        "TreeView1
        "
        Me.TreeView1.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.TreeView1.ImageIndex = -1
        Me.TreeView1.Location = New System.Drawing.Point(370, 166)
        Me.TreeView1.Name = "TreeView1"
        Me.TreeView1.Nodes.AddRange(New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node0", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node1"), New System.Windows.Forms.TreeNode("Node12", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node13")}), New System.Windows.Forms.TreeNode("Node14"), New System.Windows.Forms.TreeNode("Node15", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node16"), New System.Windows.Forms.TreeNode("Node17")})}), New System.Windows.Forms.TreeNode("Node2", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node3", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node4"), New System.Windows.Forms.TreeNode("Node5"), New System.Windows.Forms.TreeNode("Node6")}), New System.Windows.Forms.TreeNode("Node7"), New System.Windows.Forms.TreeNode("Node8", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node10"), New System.Windows.Forms.TreeNode("Node11")}), New System.Windows.Forms.TreeNode("Node9")})})
        Me.TreeView1.SelectedImageIndex = -1
        Me.TreeView1.Size = New System.Drawing.Size(187, 195)
        Me.TreeView1.TabIndex = 4
        "
        "Form1
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.AutoScroll = True
        Me.ClientSize = New System.Drawing.Size(564, 367)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.TreeView1, Me.ListBox1, Me.SourceTextBox, Me.DestinationTextBox})
        Me.Name = "Form1"
        Me.Text = "Drag and Drop Demo"
        Me.ResumeLayout(False)
    End Sub
#End Region

    Private Sub Destination_DragDrop(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles DestinationTextBox.DragDrop
        DestinationTextBox.Text = e.Data.GetData(DataFormats.Text).ToString
        DestinationTextBox.BackColor = Color.White
    End Sub
    Private Sub Destination_DragEnter(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles DestinationTextBox.DragEnter
        DestinationTextBox.BackColor = Color.Yellow
        e.Effect = DragDropEffects.Copy
    End Sub
    Private Sub SourceTextBox_MouseDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles SourceTextBox.MouseDown
        SourceTextBox.DoDragDrop(SourceTextBox.SelectedText, DragDropEffects.Copy Or DragDropEffects.Move)
    End Sub
    Private Sub ListBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles ListBox1.MouseDown
        Dim i As Integer, selItems As String
        For i = 0 To ListBox1.SelectedItems.Count - 1
            selItems = selItems & ListBox1.SelectedItems.Item(i) & vbCrLf
        Next
        SourceTextBox.DoDragDrop(selItems, DragDropEffects.Copy Or DragDropEffects.Move)
    End Sub
    Private Sub Destination_DragLeave(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DestinationTextBox.DragLeave
        DestinationTextBox.BackColor = Color.White
    End Sub
    Private Sub TreeView1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TreeView1.MouseDown
        If e.Button = MouseButtons.Right Then
            TreeView1.DoDragDrop(TreeView1.SelectedNode.Text, DragDropEffects.Copy Or DragDropEffects.Move)
        End If
    End Sub
End Class

Make sure the drop data is Text

Imports System
Imports System.Runtime.InteropServices
Imports System.Drawing
Imports System.ruponentModel
Imports System.Windows.Forms
Imports System.IO
Imports System.Xml.Serialization
Public Class MainClass
    
    Shared Sub Main(ByVal args As String())
        Dim myform As New Form1()
        Application.Run(myform)            
    End Sub
End Class
Public Class Form1
 " Start a drag.
    Private Sub lblDragSource_MouseDown(ByVal sender As Object, _
     ByVal e As System.Windows.Forms.MouseEventArgs) _
     Handles lblDragSource.MouseDown
        lblDragSource.DoDragDrop("Data!", DragDropEffects.Copy)
    End Sub
    " Make sure the drag is coming from lblDragSource.
    Private Sub lblDropTarget_DragEnter(ByVal sender As Object, _
     ByVal e As System.Windows.Forms.DragEventArgs) Handles lblDropTarget.DragEnter
        " See if the drag data includes text.
        If e.Data.GetDataPresent("Text") Then
            e.Effect = DragDropEffects.Copy
        Else
            e.Effect = DragDropEffects.None
        End If
    End Sub
    " Display the dropped data.
    Private Sub lblDropTarget_DragDrop(ByVal sender As Object, _
     ByVal e As System.Windows.Forms.DragEventArgs) _
     Handles lblDropTarget.DragDrop
        MessageBox.Show(e.Data.GetData("Text").ToString)
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Public Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.lblDragSource = New System.Windows.Forms.Label
        Me.lblDropTarget = New System.Windows.Forms.Label
        Me.SuspendLayout()
        "
        "lblDragSource
        "
        Me.lblDragSource.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDragSource.Location = New System.Drawing.Point(16, 16)
        Me.lblDragSource.Name = "lblDragSource"
        Me.lblDragSource.Size = New System.Drawing.Size(96, 64)
        Me.lblDragSource.TabIndex = 0
        Me.lblDragSource.Text = "Drag Source"
        Me.lblDragSource.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        "
        "lblDropTarget
        "
        Me.lblDropTarget.AllowDrop = True
        Me.lblDropTarget.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDropTarget.Location = New System.Drawing.Point(168, 16)
        Me.lblDropTarget.Name = "lblDropTarget"
        Me.lblDropTarget.Size = New System.Drawing.Size(96, 64)
        Me.lblDropTarget.TabIndex = 1
        Me.lblDropTarget.Text = "Drop Target"
        Me.lblDropTarget.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(279, 95)
        Me.Controls.Add(Me.lblDropTarget)
        Me.Controls.Add(Me.lblDragSource)
        Me.Name = "Form1"
        Me.Text = "LabelDrag"
        Me.ResumeLayout(False)
    End Sub
    Friend WithEvents lblDragSource As System.Windows.Forms.Label
    Friend WithEvents lblDropTarget As System.Windows.Forms.Label
End Class

Simple Drag and Drop Event Illustration

Imports System.Drawing.Drawing2D
Imports System
Imports System.Drawing.Text
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Math
Imports System.Xml.Serialization
Imports System.IO
Public Class MainClass
   Shared Sub Main()
       Dim form1 As Form = New Form1()
       Application.Run(form1)
   End Sub 
End Class

Public Class Form1
    Private m_Dragging As Boolean
    Private Sub lblDragSource_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles lblDragSource.MouseDown
        m_Dragging = True
        lblDragSource.DoDragDrop("Text from source", DragDropEffects.Copy)
        m_Dragging = False
    End Sub
    Private Sub lblDropTarget_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles lblDropTarget.DragEnter
        If m_Dragging Then
            e.Effect = DragDropEffects.Copy
        Else
            e.Effect = DragDropEffects.None
        End If
    End Sub
    Private Sub lblDropTarget_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles lblDropTarget.DragDrop
        MessageBox.Show(e.Data.GetData(DataFormats.Text).ToString)
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Public Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.lblDropTarget = New System.Windows.Forms.Label
        Me.lblDragSource = New System.Windows.Forms.Label
        Me.SuspendLayout()
        "
        "lblDropTarget
        "
        Me.lblDropTarget.AllowDrop = True
        Me.lblDropTarget.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDropTarget.Location = New System.Drawing.Point(160, 8)
        Me.lblDropTarget.Name = "lblDropTarget"
        Me.lblDropTarget.Size = New System.Drawing.Size(120, 96)
        Me.lblDropTarget.TabIndex = 3
        Me.lblDropTarget.Text = "Drop Target"
        Me.lblDropTarget.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        "
        "lblDragSource
        "
        Me.lblDragSource.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDragSource.Location = New System.Drawing.Point(8, 8)
        Me.lblDragSource.Name = "lblDragSource"
        Me.lblDragSource.Size = New System.Drawing.Size(120, 96)
        Me.lblDragSource.TabIndex = 2
        Me.lblDragSource.Text = "Drag Source"
        Me.lblDragSource.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(288, 114)
        Me.Controls.Add(Me.lblDropTarget)
        Me.Controls.Add(Me.lblDragSource)
        Me.Name = "Form1"
        Me.Text = "DragWithinApp"
        Me.ResumeLayout(False)
    End Sub
    Friend WithEvents lblDropTarget As System.Windows.Forms.Label
    Friend WithEvents lblDragSource As System.Windows.Forms.Label
End Class

Tree drag and drop to a TextBox

Imports System
Imports System.Drawing
Imports System.Reflection
Imports System.Windows.Forms
public class MainClass
   Shared Sub Main()
      Dim form1 As Form = New Form1
      Application.Run(form1)
   End Sub
End Class


Public Class Form1
    Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
    Public Sub New()
        MyBase.New()
        "This call is required by the Windows Form Designer.
        InitializeComponent()
        "Add any initialization after the InitializeComponent() call
    End Sub
    "Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    Friend WithEvents ListBox1 As System.Windows.Forms.ListBox
    Friend WithEvents TreeView1 As System.Windows.Forms.TreeView
    Friend WithEvents DestinationTextBox As System.Windows.Forms.TextBox
    Friend WithEvents SourceTextBox As System.Windows.Forms.TextBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.DestinationTextBox = New System.Windows.Forms.TextBox()
        Me.SourceTextBox = New System.Windows.Forms.TextBox()
        Me.ListBox1 = New System.Windows.Forms.ListBox()
        Me.TreeView1 = New System.Windows.Forms.TreeView()
        Me.SuspendLayout()
        "
        "DestinationTextBox
        "
        Me.DestinationTextBox.AllowDrop = True
        Me.DestinationTextBox.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.DestinationTextBox.Location = New System.Drawing.Point(4, 166)
        Me.DestinationTextBox.Multiline = True
        Me.DestinationTextBox.Name = "DestinationTextBox"
        Me.DestinationTextBox.Size = New System.Drawing.Size(354, 195)
        Me.DestinationTextBox.TabIndex = 1
        Me.DestinationTextBox.Text = ""
        "
        "SourceTextBox
        "
        Me.SourceTextBox.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.SourceTextBox.Location = New System.Drawing.Point(4, 4)
        Me.SourceTextBox.Multiline = True
        Me.SourceTextBox.Name = "SourceTextBox"
        Me.SourceTextBox.ScrollBars = System.Windows.Forms.ScrollBars.Vertical
        Me.SourceTextBox.Size = New System.Drawing.Size(354, 144)
        Me.SourceTextBox.TabIndex = 2
        Me.SourceTextBox.Text = "Use your right or left key to drag and drop item in left ListBox or Tree to the bottom TextBox."
        "
        "ListBox1
        "
        Me.ListBox1.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.ListBox1.ItemHeight = 14
        Me.ListBox1.Items.AddRange(New Object() {"Item 1", "Item 2", "Item 3", "Item 4", "Item 5", "Item 6", "Item 7", "Item 8", "Item 9", "Item 10", "Item 11", "Item 12", "Item 13", "Item 14", "Item 15"})
        Me.ListBox1.Location = New System.Drawing.Point(370, 4)
        Me.ListBox1.Name = "ListBox1"
        Me.ListBox1.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended
        Me.ListBox1.Size = New System.Drawing.Size(190, 144)
        Me.ListBox1.TabIndex = 3
        "
        "TreeView1
        "
        Me.TreeView1.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.TreeView1.ImageIndex = -1
        Me.TreeView1.Location = New System.Drawing.Point(370, 166)
        Me.TreeView1.Name = "TreeView1"
        Me.TreeView1.Nodes.AddRange(New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node0", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node1"), New System.Windows.Forms.TreeNode("Node12", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node13")}), New System.Windows.Forms.TreeNode("Node14"), New System.Windows.Forms.TreeNode("Node15", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node16"), New System.Windows.Forms.TreeNode("Node17")})}), New System.Windows.Forms.TreeNode("Node2", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node3", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node4"), New System.Windows.Forms.TreeNode("Node5"), New System.Windows.Forms.TreeNode("Node6")}), New System.Windows.Forms.TreeNode("Node7"), New System.Windows.Forms.TreeNode("Node8", New System.Windows.Forms.TreeNode() {New System.Windows.Forms.TreeNode("Node10"), New System.Windows.Forms.TreeNode("Node11")}), New System.Windows.Forms.TreeNode("Node9")})})
        Me.TreeView1.SelectedImageIndex = -1
        Me.TreeView1.Size = New System.Drawing.Size(187, 195)
        Me.TreeView1.TabIndex = 4
        "
        "Form1
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.AutoScroll = True
        Me.ClientSize = New System.Drawing.Size(564, 367)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.TreeView1, Me.ListBox1, Me.SourceTextBox, Me.DestinationTextBox})
        Me.Name = "Form1"
        Me.Text = "Drag and Drop Demo"
        Me.ResumeLayout(False)
    End Sub
#End Region

    Private Sub Destination_DragDrop(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles DestinationTextBox.DragDrop
        DestinationTextBox.Text = e.Data.GetData(DataFormats.Text).ToString
        DestinationTextBox.BackColor = Color.White
    End Sub
    Private Sub Destination_DragEnter(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles DestinationTextBox.DragEnter
        DestinationTextBox.BackColor = Color.Yellow
        e.Effect = DragDropEffects.Copy
    End Sub
    Private Sub SourceTextBox_MouseDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles SourceTextBox.MouseDown
        SourceTextBox.DoDragDrop(SourceTextBox.SelectedText, DragDropEffects.Copy Or DragDropEffects.Move)
    End Sub
    Private Sub ListBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles ListBox1.MouseDown
        Dim i As Integer, selItems As String
        For i = 0 To ListBox1.SelectedItems.Count - 1
            selItems = selItems & ListBox1.SelectedItems.Item(i) & vbCrLf
        Next
        SourceTextBox.DoDragDrop(selItems, DragDropEffects.Copy Or DragDropEffects.Move)
    End Sub
    Private Sub Destination_DragLeave(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DestinationTextBox.DragLeave
        DestinationTextBox.BackColor = Color.White
    End Sub
    Private Sub TreeView1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TreeView1.MouseDown
        If e.Button = MouseButtons.Right Then
            TreeView1.DoDragDrop(TreeView1.SelectedNode.Text, DragDropEffects.Copy Or DragDropEffects.Move)
        End If
    End Sub
End Class