DragDropEffects.Copy : DragDropEffects « System.Windows.Forms « VB.Net by API

DragDropEffects.Copy
  

Imports System
Imports System.Runtime.InteropServices
Imports System.Drawing
Imports System.ComponentModel
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.CompilerServices.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.ComponentModel.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
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DragDropEffects.Move