Ask questions about validate controls

yangcenyin

I want to associate the validate control with the dropdownlist, and verify that the first drop-down box is selected. I do n’t know what to do?

shenmue024

runat = "server">
<ASP: LISTITEM> </ ASP: LISTITEM>
<ASP: LISTITEM Value = "1"> A </ ASP: LISTITEM>
<ASP: LISTITEM Value = "2"> B </ ASP: LISTITEM>
<ASP: LISTITEM Value = "3"> C </ ASP: LISTITEM>
</ ASP: DROPDOWNLIST>
<ASP: REQUIREDFIELDVALIDATOR id = "RequiredFieldValidator1" style = "Z-INDEX: 102; LEFT: 256px; POSITION: absolute; TOP: 104px"
runat = "server" ErrorMessage = "RequiredFieldValidator" ControlToValidate = "DropDownList1"> </ ASP: REQUIREDFIELDVALIDATOR>
<ASP: BUTTON id = "Button1" style = "Z-INDEX: 103; LEFT: 112px; POSITION: absolute; TOP: 144px" runat = "server"
Text = "Button"> </ ASP: BUTTON>

3521565

It's better to write code on the server side with authentication

bjpapaya

Validation controls should not work