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Monday, 18 May 2015

Call C# Code or Function or Method From Javascript In Asp.Net

5/18/2015 - By Pranav Singh 0

This article will show you how you can call a C# function code using javascript by using server side button control in asp.net.

Some of my previous articles are as follows: Get All Checked Checkbox Value Using jQuery in Asp.Net CheckBoxList, jQuery Ajax Search and Display In MVC WebGrid in Asp.Net MVC Using C#.Net, Autocomplete Textbox in Asp.Net With DataBase Using C# AjaxControlToolkit, How to Bind Data to Webgrid in ASP.net MVC Using C#.Net, Bind DropDownList Using Entity Framework in ASP.Net MVC Using C#, Simple Login Form In Asp.Net Using C#.Net and VB.Net | How to Create Login Form in Asp.Net Using C#.

So for this article first we will create an asp.net application and add the two button control. One asp.net button control and other html input control. After that add the asp.net button inside the div control and assign display none to it so button should not get displayed.

Now add the below code into the page.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication2.WebForm1" %>

<!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>Call C# Code From Javascript In Asp.Net</title>
    <script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
    <script language="javascript">
        function CallServerCode() {
            document.getElementById("<%=Button1.ClientID %>").click();
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Label ID="Label1" runat="server" Text="Label" Font-Bold="True"
            Font-Size="X-Large" style="font-size: large"></asp:Label>
    </div>
    <div>
        <br />
        <div style="display:none;">
        <asp:Button ID="Button1" runat="server" Text="Button"
            onclick="Button1_Click"/></div>
            <input type="button" value="Call Server Side Code" onclick="javascript:CallServerCode();" />
    </div>
    </form>
</body>
</html>

In above code please check the javascript.

    <script language="javascript">
        function CallServerCode() {
            document.getElementById("<%=Button1.ClientID %>").click();
        }
    </script>

In above code I have just invoked the button click event to call the server side code. Here is the server side code.

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

namespace WebApplication2
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            Label1.Text = "This is server side call";
        }
    }
}

In above code I have called the shown the message on label control. Now we have done run the application to check the output.


Now click on button your break point will invoke .



Now press F5 to show the final output.



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We are the group of people who are expertise in different Microsoft technology like Asp.Net,MVC,C#.Net,VB.Net,Windows Application,WPF,jQuery,Javascript,HTML. This blog is designed to share the knowledge.

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