ASP.NET Validate client and server side using customvalidator

The CustomValidator is used customize and implement datavalidation as per requirement. The CompareValidator control belongs to System.Web.UI.WebControls

Syntax

<asp:CustomValidator ID="txtZipValidation" runat="server" 
ErrorMessage="Valid Zip Code is required (ex: #####)" 
ControlToValidate="txtZip" ClientValidationFunction="validateZipCode"
OnServerValidate="validateZipCode">
</asp:CustomValidator>

ASP.NET CustomValidator 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.
ClientValidationFunctionSpecifies custom client-side script function name.
ValidateEmptyTextSet whether empty text should validate or not.
ServerValidateSet whether you want server-side validation.

Example CustomValidator - Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" 
Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>ASP.NET CustomValidator Control Example</title>
<script type="text/javascript">
    function validateZipCode(sender, args) {
        var val = args.Value;
        var regEx = /^[0-9]+$/;

        if (!regEx.test(val)) {
            args.IsValid = false;
        }
        else {
            if (val.length == 5) {
                if (val > 0) {
                    args.IsValid = true;
                }
                else {
                    args.IsValid = false;
                }
            }
            else
                args.IsValid = false;
        }
    }
</script>
</head>
<body>
<form id="Form" runat="server">
<div>
<asp:Label ID="lblTitle" runat="server" Font-Bold="True" Font-Size="Medium" 
Font-Underline="True" Text="ASP.NET CustomValidator Control Example"></asp:Label>
<br /><br />
<asp:Label ID="lblZipCode" runat="server" Font-Bold="True" Font-Size="Small" 
Text="Enter Zip Code:"></asp:Label>
<asp:TextBox ID="txtZip" runat="server"  CssClass="profileFormObject" Width="53"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" 
ControlToValidate="txtZip" 
ErrorMessage="This is required field, can not be blank."></asp:RequiredFieldValidator>
<asp:CustomValidator ID="txtZipValidation" runat="server" 
ErrorMessage="Valid Zip Code is required (ex: #####)" 
ControlToValidate="txtZip" ClientValidationFunction="validateZipCode"
OnServerValidate="validateZipCode">
</asp:CustomValidator>
<br />
<asp:Button ID="btnSubmit" runat="server" Font-Bold="True" 
Font-Size="Small" Text="Submit" />  
</div>
</form>   
</body>  
</html>  

Example CustomValidator - Default.aspx.cs

protected void validateZipCode(object source, ServerValidateEventArgs args)
{
	Regex zip = new Regex("[0-9]{5}");
	if (zip.IsMatch(this.txtZip.Text.Trim()))
	{
		args.IsValid = true;  
	}
	else
	{
		args.IsValid = false; 
	}
}

Above example will produce following output

More ASP.NET CustomValidator Controls

 
SHARE THIS IF YOU LIKE!
submit to reddit

SUBSCRIBE FOR LATEST UPDATES
HAVE WE CONNECTED ON FACEBOOK?
TOP TUTORIALSTOP CODE EXAMPLESTOP LIVE DEMOLINKSSTAY CONNECTED
HTML Tutorial
HTML5 Tutorial
Bootstrap3 Tutorial
Javascript Tutorial
TypeScript Tutorial
AngularJS Tutorial
CSharp Tutorial
PHP Tutorial
Developer Tools
Javascript
AngularJS
Google MAP API V3
ASP.NET
Javascript
AngularJS
Google MAP API V3
Contact Us
Advertise with Us
Privacy Policy
Disclaimer
Stay connected. We actually like you. If you want to get up to the minute updates, then connect with us on your fav below.
 
Twitter   Linkedin   Facebook   Google+    RSS   Pinterest
 
Protected by Copyscape Original Content Checker
 
 
Copyright ©2017 www.techstrikers.com Unauthorized reproduction/replication of any part of this site is prohibited.