Reputation: 2094

.Net Changes the element IDs

.Net is kindly changing the element ids on my pages by appending a ct100_ to them. As much as I appreciate microsoft trying to help me keep from duplicating ids on my site, I think I can manage it on my own. Can anyone tell me how to prevent this? Thanks in advance.

Upvotes: 3

Answers (5)

Michael Haren

Reputation: 108286

That's just how aspnet works. Controls provide the clientid method for you to use in your code behind for this reason.

If you want to refer to objects from js, you can either inject the clientid or use classes or other attributes.

Edit: Note that this only applies to the ASP.NET controls. If you use the HTML controls, the given IDs are preserved. You can access them in your code behind by adding the runat=server attribute to them, too. Obviously these controls break the webforms model with viewstate, etc. but they do give you your desired functionality.

Of course it's been a while since I worried about it so I could be wrong...(please comment or edit if I am!).

Upvotes: 4

Amr Elgarhy

Reputation: 68952

You will need to:
override regular controls' behavior to decouple the Control.UniqueID property from the Control.ID property
override naming container controls to allow us to control how ID generation is done and how to find a control

References:
http://nunogomes.net/post/2008/06/02/ASPNET-Controls-Improving-automatic-ID-generation-Architectural-Changes-(-Part-3).aspx

http://weblogs.asp.net/nunogomes/archive/2008/06/04/asp-net-controls-improving-automatic-id-generation-architectural-changes-part-3.aspx

http://forums.asp.net/t/1394822.aspx

Upvotes: 1

Daniel

Reputation: 1793

Any control which has the INamingContainer interface on it will get the control heirarchy appended to it to allow for multiple controls to be on the page without conflicting. You should be using the ClientID property of the control if you wish to know what the id of the element will be on the client.

Upvotes: 2