Access an ASP.NET control on a MasterPage using jQuery

I must have been asked this question numerous times -- How do I access an asp.net control kept in the master page using jQuery? Here’s one of the ways of how to populate the value of an ASP.NET TextBox kept in a MasterPage using jQuery

MasterPage

<%@ Master Language="C#" AutoEventWireup="true"
CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>

<!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>Access Control using jQuery</title>
<
asp:ContentPlaceHolder id="head" runat="server">
</
asp:ContentPlaceHolder>

<
script src="Scripts/jquery-1.3.2.js"
type="text/javascript"></script>
<
script type="text/javascript">
$(document).ready(function() {
$("input[id$='txtName']").val("Text Added using jQuery");
});
</script>
</
head>
<
body>
<
form id="form1" runat="server">
<
div>
<
asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">

</
asp:ContentPlaceHolder>
</
div>
</
form>
</
body>
</
html>



ContentPage

<%@ Page Language="C#" MasterPageFile="~/MasterPage.master"

AutoEventWireup="true" CodeFile="MasterPage.aspx.cs" Inherits="MasterPage"%>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">

</
asp:Content>

<
asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1"

Runat="Server">

<
asp:TextBox ID="txtName" runat="server"></asp:TextBox>

</
asp:Content>

Note how we selected the MasterPage using the $("input[id$='txtName']") . This is because the TextBox in the MasterPage gets renamed as shown below:

<input name="ctl00$ContentPlaceHolder1$txtName" type="text" id="ctl00_ContentPlaceHolder1_txtName" />

On running the page, the textbox gets populated using jQuery

image

Check out my other ASP.NET jQuery articles.



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About The Author

Suprotim Agarwal
Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. He is the Chief Editor of a Developer Magazine called DNC Magazine. He has also authored two Books - 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook.

Follow him on twitter @suprotimagarwal.

2 comments:

Anonymous said...

Thanks a lot buddy.
It really saved my lot of efforts.

Thanks again.

Umesh Bhavsar

Prem Kumar said...

Thanks a lot!!!!

It really helped me.

Thank once again

Regards,
Prem Kumar.