Web Tutorials

Interview Q & A

Code Examples

Utility Tools

ASP.NET Display * For RequiredFieldValidator

ASP.NET display astrik sign as error using RequiredFieldValidator for required field you need to set ErrorMessage="*" and ToolTip="Password is required." property for RequiredFieldValidator control. The RequiredFieldValidator control belongs to System.Web.UI.WebControls

Syntax

<asp:RequiredFieldValidator ID="rfvPassword" runat="server"   
    ControlToValidate="txtPassword" ErrorMessage="*" ToolTip="Password is required."></asp:RequiredFieldValidator> 

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 Display * For 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 Display Astrik for RequiredFieldValidator on client-side 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 Display Astrik for RequiredFieldValidator on client-side Example"></asp:Label>
<br /><br />
<table border="0" width="500px" cellpadding="0" cellspacing="5">
<tr><td>    
<asp:Label ID="lblName" runat="server" Font-Bold="True" Font-Size="Small"   
    Text="User name:"></asp:Label>
    </td><td>
<asp:TextBox ID="txtName" runat="server" Height="22px" Width="175px"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvName" runat="server"   
    ControlToValidate="txtName" ErrorMessage="*"  ToolTip="Name is require."></asp:RequiredFieldValidator>
</td></tr>
<tr><td>
<asp:Label ID="lblPassword" runat="server" Font-Bold="True" Font-Size="Small"   
    Text="Password:"></asp:Label> 
</td><td>
<asp:TextBox ID="txtPassword" runat="server" Height="22px" TextMode="Password"   
    Width="175px"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvPassword" runat="server"   
    ControlToValidate="txtPassword" ErrorMessage="*" ToolTip="Password is required."></asp:RequiredFieldValidator> 
</td></tr>

<tr><td colspan="2">
<asp:Button ID="btnDisabledValidation" runat="server" Font-Bold="True" Text="Submit"
Font-Size="Small" />
</td></tr>
</table>   
</div> 
</form>
</body>
</html>

Above example will produce following output

RequiredFieldValidator

RegularExpressionValidator

RangValidator

CompareValidator

CustomValidator

ValidationSummary