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Sunday, January 26, 2014
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Example of CausesValidation property in ASP.NET

8:32 AMSunday, January 26, 2014
CausesValidation: Whether Validation is performed or not , you can check using CausesValidation property,after button click. Bydefault page validation is performed with all control, which is associated with validation control. If CausesValidation is true, page validate all control , which is associated with validation control. If CausesValidation is false , manually validate the control by the user.

Lets Take an Simple Example

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default4.aspx.cs" Inherits="Default4" %>

<!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 runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    Enter Your Name : 
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><asp:RequiredFieldValidator
            ID="RequiredFieldValidator1" EnableClientScript ="false" ControlToValidate ="TextBox1" runat="server" ErrorMessage="Validate your name"></asp:RequiredFieldValidator><br />
        <asp:Button ID="Button1" runat="server" Text="Button" CausesValidation="False" 
            onclick="Button1_Click" />


    </div>
    <asp:Label ID="Label1" runat="server"></asp:Label>
    </form>
</body>
</html>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Default4 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        RequiredFieldValidator1.Validate();
        if (RequiredFieldValidator1 .IsValid)
        {
            Label1.Text = "Entered Name is " + TextBox1.Text;
 
        }
    }
}

Code Generate the following output

Example of CausesValidation property in ASP.NET

Example of CausesValidation property in ASP.NET

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