ServerValidateEventArgs has two properties: : Introduction « Validation « ASP.NET Tutorial






  1. ASP.NET Tutorial
  2. Validation
  3. Introduction
Value:   the value of the form field being validated.

IsValid: whether validation fails or succeeds.

ValidateEmptyText: whether validation is performed without a value.

<%@ 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">

    void valComments_ServerValidate(Object source, ServerValidateEventArgs args)
    {
        if (args.Value.Length > 10)
            args.IsValid = false;
        else
            args.IsValid = true;
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <script type="text/javascript">

    function valComments_ClientValidate(source, args)
    {
        if (args.Value.length > 10)
            args.IsValid = false;
        else
            args.IsValid = true;
    }

    </script>
    <title>Show CustomValidator with JavaScript</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <asp:Label
        id="lblComments"
        Text="Comments:"
        AssociatedControlID="txtComments"
        Runat="server" />
    <br />
    <asp:TextBox
        id="txtComments"
        TextMode="MultiLine"
        Columns="30"
        Rows="5"
        Runat="server" />
    <asp:CustomValidator
        id="valComments"
        ControlToValidate="txtComments"
        Text="(Comments must be less than 10 characters)"
        OnServerValidate="valComments_ServerValidate"
        ClientValidationFunction="valComments_ClientValidate"
        Runat="server" />
    <asp:Button
        id="btnSubmit"
        Text="Submit"
        Runat="server" />

    </div>
    </form>
</body>
</html>








8.7.Introduction
8.7.1.Six validation controls are included in the ASP.NET 3.5 Framework:
8.7.2.Disabling Validation
8.7.3.ServerValidateEventArgs has two properties: