<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
CodeFile="Default.aspx.cs" Inherits="_Default" %>
$(document).ready(function () {
$("#MainContent_btnShow").click(function () {
alert("You have clicked on show button");
});
});
Master Page
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Site.master.cs" Inherits="SiteMaster" %>
My ASP.NET Application
you can also download samp0le project which i've uploaded here

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