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ASP.NET Cancel Page Validation using RequiredFieldValidator

ASP.NET cancel Page Validation using RequiredFieldValidator or set "CausesValidation" property to "false" for submit button. The RequiredFieldValidator control belongs to System.Web.UI.WebControls.

Syntax

<asp:Button ID="btnSubmit" runat="server" CausesValidation="false" 
    Font-Size="Medium" Text="Submit" />

ASP.NET RequiredFieldValidator Control Property

PropertyDescription
ControlToValidateSpecifies control name which needs to be validate.
DisplaySpecifies behavior of the error message.
EnableClientScriptSpecifies whether or not client-side validation is enabled.
EnabledSpecifies whether or not validation control is enabled or not.
ErrorMessageSpecifies error messageto be display in validation summary.
ForeColorSpecifies error message color.
IsValidIndicate if associate control passes validation or not.
SetFocusOnErrorSet focus on associate control if validation fails.
TextSpecifies text to be display if validation fails.
ValidationGroupSpecifies validation group name.
ValidateUpdate the isvalid propery.
ValidateGetValidationPropertyDetermineing validation property of a control, if it exists.
InitialValueSpecifies initial value of input control.

ASP.NET Cancel Page Validation using RequiredFieldValidator Example

<%@ Page Language="C#" AutoEventWireup="true" 
CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>ASP.NET Cancel Validation Of Page Example</title>
</head>
<body>
<form id="Form" runat="server">
<div style="width: 619px">
<asp:Label ID="lblTitle" runat="server" Font-Bold="True" Font-Size="Medium" 
Font-Underline="True" Text="ASP.NET Cancel Validation Of Page Example"></asp:Label>
<br /><br />
<table border="0" width="600px" cellpadding="0" cellspacing="5">
<tr><td>    
<asp:Label ID="lblName" runat="server" Font-Bold="True" Font-Size="Small"   
    Text="User name:"></asp:Label>
<asp:TextBox ID="TextBox1" runat="server" Height="22px" Width="175px"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"   
    ControlToValidate="TextBox1" ErrorMessage="User name can not be empty"></asp:RequiredFieldValidator>
</td></tr>
<tr><td>
<asp:Label ID="lblPassword" runat="server" Font-Bold="True" Font-Size="Small"   
    Text="Password:"></asp:Label> 
<asp:TextBox ID="TextBox2" runat="server" Height="22px" TextMode="Password"   
    Width="175px"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server"   
    ControlToValidate="TextBox2" ErrorMessage="Password can not be empty"></asp:RequiredFieldValidator> 
</td></tr>
<tr><td>
<asp:Button ID="btnSubmit" runat="server" Font-Bold="True" CausesValidation="false" 
Font-Size="Small" Text="Submit" Width="60px" />
<br />
</td></tr>
</table>   
</div> 
</form>
</body>
</html>

Above example will produce following output

RequiredFieldValidator

RegularExpressionValidator

RangValidator

CompareValidator

CustomValidator

ValidationSummary