为什莫我的chach消息框不能显示???单步调试E以有显示出错信息。
catch (System.Data.SqlClient.SqlException E)
{
Response.Write("<script>alert('" + E.Message.ToString() + "');</script>");
}
catch (System.Data.SqlClient.SqlException E)
{
Response.Write("<script>alert('" + E.Message.ToString() + "');</script>");
}
catch (System.Data.SqlClient.SqlException E)
{
Response.Write(" <script>alert('" + E.Message.ToString() + "'); </script>");
}