Tips for Master Page

Posted Date: 10 Aug 2007 Resource Type: Articles Category: .NET Framework

Posted By: Kamal Member Level: Gold
Rating:

Points: 20

When we use master page in ASP.Net it will append the Content Placeholder Id with the ID of the contained controls.i.e when there is a textbox with ID “txtAccountNumber” it will be rendered as “ctl00_ContentPlaceHolder1_txtAccountNumber” where “ContentPlaceHolder1” is the ID of the Content Placeholder of the Master Page. This makes us to use the ID “ctl00_ContentPlaceHolder1_txtAccountNumber” whenever we want to access it in JScript. We can access the textbox in Jscript like,


document.getElementById(' ctl00_ContentPlaceHolder1_txtAccountNumber ') ;

But the above scenario will leads to script error if we unknowingly change the ID of the ContentPlaceholder in master Page. So whenever we change the ContentPlaceholder ID we need to revisit all the Jscript code and change the corresponding ID’s. To prevent this rework we can register a hidden control from code behind which in turn will hold the client ID of the control.


Page.RegisterHiddenField("hdnAccountNoTextID", txtAccountNumber.ClientID);

Now we can make use of this hidden variable to get the client ID of the textbox in Jscript.


//gets the Client ID of the txtAccountNumber textbox
var AccountNoTextID = document.getElementById('hdnAccountNoTextID').value;

//Access the txtAccountNumber textbox
var AccountNoText = document.getElementById('hdnAccountNoTextID');

By doing this we can prevent the rework even if someone changes the ContentPlaceholder ID in future our script will be executing without any error.
The same scenario applies when we use a control inside user control.

Responses

Author: AGGGGGGGGGGGGGGGG 22 Aug 2007 Member Level: Bronze Points : 0

Thanks for posting this!!! It saved me tons of time!!! You are awesome!!!

Thanks, again!
Adam

Feedbacks

Popular Tags

What are tags ?

Search Tags

(No tags found.)

Post Feedback

This is a strictly moderated forum. Only approved messages will appear in the site. Please use 'Spell Check' in Google toolbar before you submit.
You must Sign In to post a response.

	Next Resource: .NET Framework Part -1
	Previous Resource: Precompiling ASP.NET 2.0 websites
	Return to Discussion Resource Index
	Post New Resource
	Category: .NET Framework

Post resources and earn money!

Related Resources

dotNet Slackers BizTalk Adaptors Web Design

audio conferencing services