MessageBox.Show("所属期起>=" & rqq1 & " And 所属期止<=" & rqz1 & iif(ghxs IsNot Nothing," And 工号 In ('" & ghxs.replace(",","','") & "')",""),"验证",MessageBoxButtons.OK,MessageBoxIcon.Information)
以上表达式,当ghxs为空值时,本应返回空值,但是系统提示表达式错误,请高手帮忙解答疑惑。
注:ghxs=e.Form.Controls("TextBox3").value