老师好！

以前代码运行正常，现在发布时报错，请老师看看是哪里的问题？

谢谢!

1、全局代码：

Public Sub TextBox_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs)
Dim path As String = CType(e.Data.GetData(System.Windows.Forms.DataFormats.FileDrop), System.Array).GetValue(0).ToString()
sender.Text = path
sender.Cursor = System.Windows.Forms.Cursors.IBeam
End Sub

Public Sub picture_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs)
If (e.Data.GetDataPresent(System.Windows.Forms.DataFormats.FileDrop)) Then
    e.Effect = System.Windows.Forms.DragDropEffects.Link
    sender.Cursor = System.Windows.Forms.Cursors.Arrow
Else
    e.Effect = e.AllowedEffect
End If
End Sub

2、窗口的AfterLoad
......

\'文件夹拖放
Dim t As WinForm.TextBox = e.Form.Controls("TextBox2")
t.BaseControl.AllowDrop = True

AddHandler t.BaseControl.DragDrop, AddressOf TextBox_DragDrop
AddHandler t.BaseControl.DragEnter, AddressOf TextBox_DragEnter

Dim ps As  System.Diagnostics.Process() = System.Diagnostics.Process.GetProcesses()
For Each p As System.Diagnostics.Process In ps
    \'output.show(p.processName)
    If ("WINWORD" = p.ProcessName)
        \'msgbox(p.MainWindowTitle)
        p.kill
    End If
Next

3、报错如图：