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Drag and drop from external source

Posted on 2006-07-16
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Last Modified: 2010-04-23
Hi Experts,

I would like to be able to drag and drop a file onto my application from the windows explorer and open that file in a rich text box using the RichTextBox.loadfile command. On the drag drop event for my form i need to know the path for the dragged file. Also if the file is a shortcut i would like to grab the target path.

How can i achieve this?

Cheers,

Tom
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Question by:TommyTwoPints
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2 Comments
 
LVL 22

Accepted Solution

by:
Mohammed Nasman earned 500 total points
ID: 17116964
Hello Tom,

  Here's a quick example that will enable the dragEnter and DragDrop events to work with RichTextBox, so you can drag any "RTF" file and drop it in your application

Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
       RichTextBox1.AllowDrop = True
        AddHandler Me.RichTextBox1.DragEnter, New System.Windows.Forms.DragEventHandler(AddressOf Me.RichTextBox1_DragEnter)
        AddHandler Me.RichTextBox1.DragDrop, New System.Windows.Forms.DragEventHandler(AddressOf Me.RichTextBox1_DragDrop)
    End Sub

    Private Sub RichTextBox1_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs)
        If CType(e, DragEventArgs).Data.GetDataPresent(DataFormats.FileDrop) Then
            CType(e, DragEventArgs).Effect = DragDropEffects.All
        Else
            CType(e, DragEventArgs).Effect = DragDropEffects.None
        End If
    End Sub

    Private Sub RichTextBox1_DragDrop(ByVal sender As Object, ByVal e As DragEventArgs)
        Dim s As String() = e.Data.GetData(DataFormats.FileDrop)
        RichTextBox1.LoadFile(s(0))
    End Sub

HTH


Regards,
Mohammed Nasman
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LVL 3

Author Comment

by:TommyTwoPints
ID: 17116990
Thats excellent, thanks!
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