[求助]主窗口BeforeClose事件不执行？ Post By：2011/10/29 17:16:00 [显示全部帖子]
Dim
sd As WinForm.DateTimePicker Dim ed As WinForm.DateTimePicker sd = e.Form.Controls("StartDate") ed = e.Form.Controls("EndDate") If sd.Value Is Nothing OrElse ed.Value Is Nothing Then MessageBox.Show("请输入起始日期和终止日期！","提示", MessageBoxButtons.OK ,MessageBoxIcon.Information) e.Cancel = True End If
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Post By：2011/10/29 17:16:00 [显示全部帖子]
