主题：[求助] 增加按钮，想给图片浏览器替换图片。

Dim piv As WinForm.PictureViewer = e.Form.Controls("PictureViewer2")
Dim name As String = piv.SelectedItem
Dim pth As String = ProjectPath & "Attachments\"
Dim dlg As  New OpenFileDialog
dlg.Filter= "图形文件|*.png;*.jpg;"

If dlg.ShowDialog = DialogResult.OK Then
piv.DeleteFile(name)
    FileSys.CopyFile(dlg.FileName,name,True)
    piv.AddFile(name)
End If