Validation ASP.Net Tutorial

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  4. ValidationSummary displays a list of validation errors
<%@ Page Language="C#" %>
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">


    Show ValidationSummary


    
    

            id="ValidationSummary1"
        Runat="server" />
            id="lblFirstName"
        Text="First Name:"
        AssociatedControlID="txtFirstName"
        Runat="server" />
    
            id="txtFirstName"
        Runat="server" />
            id="reqFirstName"
        Text="(Required)"
        ErrorMessage="First Name is required"
        ControlToValidate="txtFirstName"
        Runat="server" />
    
            id="lblLastName"
        Text="Last Name:"
        AssociatedControlID="txtLastName"
        Runat="server" />
    
            id="txtLastName"
        Runat="server" />
            id="reqLastName"
        Text="(Required)"
        ErrorMessage="Last Name is required"
        ControlToValidate="txtLastName"
        Runat="server" />
    
            id="btnSubmit"
        Text="Submit"
        Runat="server" />