VB.Net Tutorial/GUI/ListBox Drag Drop

Drag and drop ListBox

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ListBoxDragDrop
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class

Public Class Form1
    Private dragBounds As Rectangle
    Private dragMethod As String
    Private Sub ListBox1_DragEnter(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.DragEventArgs) _
          Handles ListBox1.DragEnter
        " ----- Yes, we accept the items.
        If (e.Data.GetDataPresent(ListBox2.SelectedItems. _
              GetType()) = True) Then _
           e.Effect = DragDropEffects.Move
    End Sub
    Private Sub ListBox1_DragDrop(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.DragEventArgs) _
          Handles ListBox1.DragDrop
        " ----- Accept the dropped items.
        For Each oneItem As Object In _
              e.Data.GetData(ListBox2.SelectedItems.GetType())
            ListBox1.Items.Add(oneItem)
        Next oneItem
    End Sub
    Private Sub ListBox1_MouseDown(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.MouseEventArgs) _
          Handles ListBox1.MouseDown, ListBox2.MouseDown
        " ----- Prepare the draggable content.
        If (CType(sender, ListBox).SelectedItems.Count = 0) Then Return
        " ----- Don"t start the drag yet. Wait until we move a
        "       certain amount.
        dragBounds = New Rectangle(New Point(e.X - _
           (SystemInformation.DragSize.Width / 2), _
           e.Y - (SystemInformation.DragSize.Height / 2)), _
           SystemInformation.DragSize)
        If (sender Is ListBox1) Then
            dragMethod = "1to2"
        Else
            dragMethod = "2to1"
        End If
    End Sub
    Private Sub ListBox1_MouseMove(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.MouseEventArgs) _
          Handles ListBox1.MouseMove
        " ----- Ignore if not dragging from ListBox1.
        If (dragMethod <> "1to2") Then Return
        " ----- Have we left the drag boundary?
        If (dragBounds.Contains(e.X, e.Y) = False) Then
            " ----- Start the drag-and-drop operation.
            If (ListBox1.DoDragDrop(ListBox1.SelectedItems, _
                  DragDropEffects.Move) = _
                  DragDropEffects.Move) Then
                " ----- Successful move. Remove the items from
                "       this list.
                Do While ListBox1.SelectedItems.Count > 0
                    ListBox1.Items.Remove(ListBox1.SelectedItems(0))
                Loop
            End If
            dragMethod = ""
        End If
    End Sub
    Private Sub ListBox1_MouseUp(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.MouseEventArgs) _
          Handles ListBox1.MouseUp, ListBox2.MouseUp
        " ----- End of drag-and-drop.
        dragMethod = ""
    End Sub
    Private Sub ListBox2_DragEnter(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.DragEventArgs) _
          Handles ListBox2.DragEnter
        " ----- Yes, we accept the items.
        If (e.Data.GetDataPresent(ListBox1.SelectedItems. _
           GetType()) = True) Then _
           e.Effect = DragDropEffects.Move
    End Sub
    Private Sub ListBox2_DragDrop(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.DragEventArgs) _
          Handles ListBox2.DragDrop
        " ----- Accept the dropped items.
        For Each oneItem As Object In _
              e.Data.GetData(ListBox1.SelectedItems.GetType())
            ListBox2.Items.Add(oneItem)
        Next oneItem
    End Sub
    Private Sub ListBox2_MouseMove(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.MouseEventArgs) _
          Handles ListBox2.MouseMove
        " ----- Ignore if not dragging from ListBox2.
        If (dragMethod <> "2to1") Then Return
        " ----- Have we left the drag boundary?
        If (dragBounds.Contains(e.X, e.Y) = False) Then
            " ----- Start the drag-and-drop operation.
            If (ListBox2.DoDragDrop(ListBox2.SelectedItems, _
                  DragDropEffects.Move) = _
                  DragDropEffects.Move) Then
                " ----- Successful move. Remove the items from
                "       this list.
                Do While ListBox2.SelectedItems.Count > 0
                    ListBox2.Items.Remove(ListBox2.SelectedItems(0))
                Loop
            End If
            dragMethod = ""
        End If
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected 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.ListBox1 = New System.Windows.Forms.ListBox
        Me.ListBox2 = New System.Windows.Forms.ListBox
        Me.SuspendLayout()
        "
        "ListBox1
        "
        Me.ListBox1.AllowDrop = True
        Me.ListBox1.FormattingEnabled = True
        Me.ListBox1.Items.AddRange(New Object() {"One", "Two", "Three", "Four", "Five", "Six"})
        Me.ListBox1.Location = New System.Drawing.Point(8, 8)
        Me.ListBox1.Name = "ListBox1"
        Me.ListBox1.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended
        Me.ListBox1.Size = New System.Drawing.Size(192, 95)
        Me.ListBox1.TabIndex = 0
        "
        "ListBox2
        "
        Me.ListBox2.AllowDrop = True
        Me.ListBox2.FormattingEnabled = True
        Me.ListBox2.Location = New System.Drawing.Point(208, 8)
        Me.ListBox2.Name = "ListBox2"
        Me.ListBox2.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended
        Me.ListBox2.Size = New System.Drawing.Size(192, 95)
        Me.ListBox2.TabIndex = 1
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(408, 112)
        Me.Controls.Add(Me.ListBox2)
        Me.Controls.Add(Me.ListBox1)
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle
        Me.MaximizeBox = False
        Me.Name = "Form1"
        Me.Text = "ListBox Drag-and-Drop"
        Me.ResumeLayout(False)
    End Sub
    Friend WithEvents ListBox1 As System.Windows.Forms.ListBox
    Friend WithEvents ListBox2 As System.Windows.Forms.ListBox
End Class

Drag file from File Explore to ListBox

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class FileDragDrop
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
Public Class Form1
    Private Sub ListBox1_DragEnter(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.DragEventArgs) _
          Handles ListBox1.DragEnter
        If (e.Data.GetDataPresent(DataFormats.FileDrop) =True) Then
            e.Effect = DragDropEffects.Copy
        End If
    End Sub
    Private Sub ListBox1_DragDrop(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.DragEventArgs) _
          Handles ListBox1.DragDrop
        For Each oneFile As String In _
              e.Data.GetData(DataFormats.FileDrop)
            ListBox1.Items.Add(oneFile)
        Next oneFile
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected 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.ListBox1 = New System.Windows.Forms.ListBox
        Me.SuspendLayout()
        "
        "ListBox1
        "
        Me.ListBox1.AllowDrop = True
        Me.ListBox1.FormattingEnabled = True
        Me.ListBox1.Location = New System.Drawing.Point(8, 8)
        Me.ListBox1.Name = "ListBox1"
        Me.ListBox1.Size = New System.Drawing.Size(576, 238)
        Me.ListBox1.TabIndex = 0
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(594, 256)
        Me.Controls.Add(Me.ListBox1)
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle
        Me.MaximizeBox = False
        Me.Name = "Form1"
        Me.Text = "Drag and Drop Files"
        Me.ResumeLayout(False)
    End Sub
    Friend WithEvents ListBox1 As System.Windows.Forms.ListBox
End Class