Web Tutorials

Interview Q & A

Code Examples

Utility Tools

ASP.NET CompareValidator for Data Type Validation

ASP.NET CompareValidator is used to check Data Type of input value. The CompareValidator control belongs to System.Web.UI.WebControls

Syntax

<asp:comparevalidator id="checkDate" controltovalidate="TextBox2" 
ErrorMessage="Enter date only" operator="DataTypeCheck" type="Date" runat="server"></asp:comparevalidator>

ASP.NET CompareValidator 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.
ValidationExpressionSpecifies operator and type property that you want to match against input value.

ASP.NET CompareValidator for Data Type Validation 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 Date Validation Using CompareValidator 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 Date Type Validation Example"></asp:Label><br/><br/>
<table border="0" width="600px" cellpadding="0" cellspacing="0">
<tr><td>
<asp:Label ID="lblDate" runat="server" Font-Bold="True" Font-Size="Small" 
Text="Enter Date:"></asp:Label>
<asp:TextBox ID="TextBox2" runat="server" Width="177px"></asp:TextBox>
<asp:comparevalidator id="checkDate" controltovalidate="TextBox2" 
ErrorMessage="Enter date only"
operator="DataTypeCheck" type="Date" runat="server"></asp:comparevalidator>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" 
ControlToValidate="TextBox2" 
ErrorMessage="This is required field, can not be blank."></asp:RequiredFieldValidator>
</td></tr>
<tr><td>
<asp:Button ID="btnSubmit" runat="server" Font-Bold="True" 
Font-Size="Small" Text="Submit" Width="60px" />
</td></tr>
</table>   
</div> 
</form>
</body>
</html>

Above example will produce following output

RequiredFieldValidator

RegularExpressionValidator

RangValidator

CompareValidator

CustomValidator

ValidationSummary