VB.Net by API/System.Windows.Forms/DragDropEffects

DragDropEffects.Copy

  
Imports System
Imports System.Runtime.InteropServices
Imports System.Drawing
Imports System.ruponentModel
Imports System.Windows.Forms
Imports System.IO
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
    " Allow Copy if there is FileDrop data.
    Private Sub lblDropTarget_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles lblDropTarget.DragEnter
        If e.Data.GetDataPresent(DataFormats.FileDrop) Then
            e.Effect = DragDropEffects.Copy
        Else
            e.Effect = DragDropEffects.None
        End If
    End Sub
    " Display the dropped file names.
    Private Sub lblDropTarget_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles lblDropTarget.DragDrop
        lstFiles.Items.Clear()
        Dim file_names As String() = DirectCast(e.Data.GetData(DataFormats.FileDrop), String())
        For Each file_name As String In file_names
            lstFiles.Items.Add(file_name)
        Next file_name
    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.lstFiles = New System.Windows.Forms.ListBox
        Me.lblDropTarget = New System.Windows.Forms.Label
        Me.SuspendLayout()
        "
        "lstFiles
        "
        Me.lstFiles.Dock = System.Windows.Forms.DockStyle.Fill
        Me.lstFiles.FormattingEnabled = True
        Me.lstFiles.Location = New System.Drawing.Point(0, 48)
        Me.lstFiles.Name = "lstFiles"
        Me.lstFiles.Size = New System.Drawing.Size(274, 160)
        Me.lstFiles.TabIndex = 3
        "
        "lblDropTarget
        "
        Me.lblDropTarget.AllowDrop = True
        Me.lblDropTarget.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDropTarget.Dock = System.Windows.Forms.DockStyle.Top
        Me.lblDropTarget.Location = New System.Drawing.Point(0, 0)
        Me.lblDropTarget.Name = "lblDropTarget"
        Me.lblDropTarget.Size = New System.Drawing.Size(274, 48)
        Me.lblDropTarget.TabIndex = 2
        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(274, 210)
        Me.Controls.Add(Me.lstFiles)
        Me.Controls.Add(Me.lblDropTarget)
        Me.Name = "Form1"
        Me.Text = "AcceptFiles"
        Me.ResumeLayout(False)
    End Sub
    Friend WithEvents lstFiles As System.Windows.Forms.ListBox
    Friend WithEvents lblDropTarget As System.Windows.Forms.Label
End Class

DragDropEffects.Move

  
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