Set ClientID in asp.net

Question

Is it possible to set the ClientID of any asp.net server control? How can I do this?

Explain what you are trying to achieve and then we might be able to suggest an alternative. — Dan Diplo, Sep 15 '09 at 17:44

Michael La Voie · Accepted Answer · 2013-09-19T18:34:25.180

20

The good news is that in VS 2010 .Net 4, you'll have complete control over Client IDs!

Still for the current versions of .Net, you can make due. I assume you need the ID for JavaScript. If so, just get the ID like so:

<script type="text/javascript">
    var myTextBox = $('#<%=TextBox1.ClientID%>');
</script>

edited Sep 19 '13 at 18:34

answered Sep 15 '09 at 17:42

Michael La Voie

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+1 for being a Jedi and reading ebattulga's mind, "Get ClientID I do not Set" – rick schott Sep 15 '09 at 18:44
2

Don't forget to put the # sign in front of the <%= pending you want to get the actual DOM object and not just the text of the control's ClientID. – KSwift87 Sep 19 '13 at 17:01
1

Thx @Kswift87 that's absolutely right. i've updated my answer – Michael La Voie Sep 19 '13 at 18:34

score 4 · Answer 2 · answered Sep 15 '09 at 18:16

I would advice against doing this unless you are sure you want to do it, but there is a way. You can override the ClientID property from within the server control.

public override string ClientID
{
    get { return "whatever"; }
}

But as others have noted, you can't do it from outside.

Ahmad Mageed · Answer 3 · 2009-09-15T20:25:43.680

3

That's not possible. The ClientID is generated by ASP.NET. From MSDN:

The ClientID value is generated by concatenating the ID value of the control and the UniqueID value of its parent control. If the ID value of the control is not specified, an automatically generated value is used.

edited Sep 15 '09 at 20:25

answered Sep 15 '09 at 17:37

Ahmad Mageed

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anishMarokey · Answer 4 · 2009-09-15T18:06:07.550

1

Even i think it is not possible in Visual studio 2008 . Because Control.ClientID Property has only get method

Edit :But in Visual studio 2010(.Net 4.0) it is possible

edited Sep 15 '09 at 18:06

answered Sep 15 '09 at 17:41

anishMarokey

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How is it possible? In VS2015 this method is still only get. – FrenkyB Feb 01 '17 at 11:24

score 1 · Answer 5 · answered Jul 05 '11 at 08:59

1

ASP.NET 4 has ClientIDMode property on each control for that. If you want to turn off ClientID completely you can use this trick - it works for any non-postback control

answered Jul 05 '11 at 08:59

Lisetsky Val

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score 0 · Answer 6 · answered Sep 15 '09 at 17:41

0

This is an ASP.NET 4.0 feature.

answered Sep 15 '09 at 17:41

Ryan Hoffman

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score 0 · Answer 7 · answered Jul 25 '13 at 14:09

For VS 2010, .NET 4.0:

If you just try to set ctrl.ClientID="stringID" you will get an Error, saying that ClientID is read only. You can control the value of ClientID using ClientIDMode - which defines the algorithm with which ClientID is set:

ctrl.ID = "IDstring";
ctrl.ClientIDMode = ClientIDMode.Static;   //ClientID value is set to the value of ID

The html markup will mark your control's html with the control's ID. Thus you have some degree of control from the code-behind.

Set ClientID in asp.net

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