DOT NET SOLUTIONS: Use Of OnClientClick And OnClick Event Through Javascript in asp.net

Output :

When We click on "Button" then a Message box will apear like below if you click on Ok button then it return true thereafter code behind code will be execute .

If we click on Cancel then code behind code will not be execute .

In second figure , I am validating three textboxs onClick "Save" Button if user not fill the textboxs then massage will be generated. And return false; that's why codebehind code will not execute .

if we fill all textboxs then message will not be generated and return true ; that's why code beind code will execute.

Aspx Page

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default15.aspx.cs" Inherits="Default15" %>

<!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>

    <script language="javascript" type="text/javascript">

        function validate() {



            var summary = "";

            summary += isvaliduser();

            summary += isvalidFirstname();

            summary += isvalidLocation();

            if (summary != "") {

              alert(summary);



               return false;

            }

            else {

                return true;

            }

        }

        function isvaliduser() {

            var uid;

            var temp = document.getElementById("<%=txtuser.ClientID %>");

            uid = temp.value;

            if (uid == "") {

                return ("Please Enter UserName" + "\n");

            }

            else {

                return "";

            }

        }

        function isvalidFirstname() {

            var uid;

            var temp = document.getElementById("<%=txtfname.ClientID %>");

            uid = temp.value;

            if (uid == "") {

                return ("Please enter firstname" + "\n");

            }

            else {

                return "";

            }

        }

        function isvalidLocation() {

            var uid;

            var temp = document.getElementById("<%=txtlocation.ClientID %>");

            uid = temp.value;

            if (uid == "") {

                return ("Please enter Location" + "\n");

            }

            else {

                return "";

            }

        }

</script>

</head>

<body>

    <form id="form1" runat="server">

    <div>

    <asp:Button ID="Button1" runat="server" OnClientClick="return confirm('do you want to do postback')"

              OnClick="Button1_Click" Text="Button" /><br /><br />

        <table align="left">

<tr>

<td>UserName</td>

<td><asp:TextBox ID="txtuser" runat="server" /></td>

</tr>

<tr>

<td>First Name</td>

<td><asp:TextBox ID="txtfname" runat="server" /></td>

</tr>

<tr>

<td>Location</td>

<td><asp:TextBox ID="txtlocation" runat="server" /></td>

</tr>

<tr>

<td></td>

<td>

<asp:Button ID="btnsubmit" runat="server" Text="Save"

OnClientClick ="return validate();" onclick="btnsubmit_Click" />

</td>

</tr>

</table>

    </div>

    </form>

</body>

</html>

Aspx.cs Page

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class Default15 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

Response.Write("button click");

}

protected void btnsubmit_Click(object sender, EventArgs e)

{

Response.Write("This is my testing of onClick and OnClientClick Event");

}

DOT NET SOLUTIONS

Friday 6 December 2013

Use Of OnClientClick And OnClick Event Through Javascript in asp.net

Output :

Aspx Page

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