Tips for Asp.Net

How to assign RequiredFiled Validator for DropDownList in Asp.Net

Ans:

      
 <form id="form1" runat="server">
        <div>
            Select Gender :
            <asp:DropDownList runat="server" ID="ddlList">
                <asp:ListItem Text="Select" Value="0"></asp:ListItem>
                <asp:ListItem Text="Male" Value="1"></asp:ListItem>
                <asp:ListItem Text="Female" Value="2"></asp:ListItem>
            </asp:DropDownList>
            <asp:RequiredFieldValidator runat="server" ID="rfv" ControlToValidate="ddlList" ForeColor="Red" InitialValue="0" ErrorMessage="Please Select Gender"></asp:RequiredFieldValidator><br />
        <asp:Button  runat="server" ID="btnsubmit" Text="Submit" />
        </div>
    </form>
 

Output: