Need 1 TextBox and set AllowDrop property of TextBox1 to True.
Private Sub TextBox1_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles TextBox1.DragEnter
If (e.Data.GetDataPresent(DataFormats.Text)) Then
e.Effect = DragDropEffects.Copy
End If
End Sub
Private Sub TextBox1_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles TextBox1.DragDrop
TextBox1.Text = e.Data.GetData(DataFormats.Text).ToString
End Sub