1) Set the AllowDrop property to true
2) Add handlers for both the DragEnter and DragDrop event
this.richTextBox1.DragEnter += new System.Windows.Forms.DragEventHandler(this.richTextBox1_DragEnter);
this.richTextBox1.DragDrop += new System.Windows.Forms.DragEventHandler(this.richTextBox1_DragEnter);
....
private void richTextBox1_DragEnter(object sender,
System.Windows.Forms.DragEventArgs e)
{
if (((DragEventArgs)e).Data.GetDataPresent(DataFormats.Text))
((DragEventArgs)e).Effect = DragDropEffects.Copy;
else
((DragEventArgs)e).Effect = DragDropEffects.None;
}
private void richTextBox1_DragDrop(object sender, DragEventArgs e)
{
// Loads the file into the control.
richTextBox1.LoadFile((String)e.Data.GetData('Text'), System.Windows.Forms.RichTextBoxStreamType.RichText);
}
Here are VB snippets.
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_DragEnter)
.....
Private Sub richTextBox1_DragEnter(sender As Object, e As System.Windows.Forms.DragEventArgs)
If CType(e, DragEventArgs).Data.GetDataPresent(DataFormats.Text) Then
CType(e, DragEventArgs).Effect = DragDropEffects.Copy
Else
CType(e, DragEventArgs).Effect = DragDropEffects.None
End If
End Sub ’richTextBox1_DragEnter
Private Sub richTextBox1_DragDrop(sender As Object, e As DragEventArgs)
’ Loads the file into the control.
richTextBox1.LoadFile(CType(e.Data.GetData('Text'), [String]), System.Windows.Forms.RichTextBoxStreamType.RichText)
End Sub ’richTextBox1_DragDrop
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