Dim tm As String = ProjectPath & "Attachments\" Dim dlg As New SaveFileDialog '定义一个新的SaveFileDialog dlg.Filter= "Word文件|*.doc|Excel文件|*.xls" '设置筛选器 dlg.Filter= "Word文件|*.doc|Excel文件|*.xls" '设置筛选器 Dim fl As String Do While True If dlg.ShowDialog = DialogResult.Ok Then '如果用户单击了确定按钮 fl = dlg.FileName If fl.Contains(tm) Then msgbox("不能选择Attachments") Else msgbox("生成报表") Exit Do End If Else Exit Do End If Loop