Use RequiredFieldValidator to validate drop down list
By Jatin Prajapati
Hi,
In this FAQ we will see the user of RequiredFieldValidator to validate drop down list.
Refer the following code example.
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD
XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Required Field Validator to validate drop down list</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="btn" runat="server" Text="OK" />
<br />
DDL1: <asp:DropDownList ID="ddl1" runat="server">
<asp:ListItem Text="Select" Selected="True"></asp:ListItem>
<asp:ListItem Text="01Dept1"></asp:ListItem>
<asp:ListItem Text="02Dept2"></asp:ListItem>
</asp:DropDownList>
<asp:RequiredFieldValidator ID="rfv" runat="server" ControlToValidate="ddl1" InitialValue="Select"
ErrorMessage="Please select from drop down!!!"></asp:RequiredFieldValidator>
</div>
</form>
</body>
</html>
Use RequiredFieldValidator to validate drop down list (1929 Views)