.NET working with control id's and CSS

HI jkofte

Thanks for the reply - but if you read the last part of my post, you will see that I specifically state that I don't want to use CssClass.

Hi djcheecky,
You can try to use a classic img control in your aspx file.
Put the runat="server" attribute to your img and you'll be able to set it's attributes in a .net separated code,  file without giving it a poor ctl000 prefix.

Yeah, this prefix is annoying ;)

You can't get around it. The only other way is to use an embedded style sheet(define the styles in your aspx page).

<style type="text/css">
        #<%=myControl.ClientID%>{ color: red;}
</style>

But you can't with an external css file. CssClass is the best alternative.

or use an HTML image as suggested by geck1942

Hi guys

Thanks for the responses.

I AM currently using an html image tag :)

The reason why i want to use an ASP:image is so that I can set its source via the code behind page.
BUT, I would like it to retain the css as described by its ID as I have a whole lot of pre-existing styles within a style sheet that I don't want to have to convert to classes (i.e. from #logo to .logo)

Also - to me it is incorrect to make the image styles use a CLASS instead if an ID, as classes are for styles that get used repeatedly and id's for unique elements, which this image is.

:)

Thanks

Well you can always use an html image, when you want to change it's source you can loop through the controls on the page

foreach (Control c in this.Controls)
   {
       if (c is System.Web.UI.HtmlControls.HtmlControl)
       {
           System.Web.UI.HtmlControls.HtmlControl hc = c as System.Web.UI.HtmlControls.HtmlControl;
           hc.Attributes["src"] = "http://myimageSource.jpg";
       }
   }

Hi Omega

That is a little bit overkill for one control. It would almost certainly be quicker to convert all the ID's to classes than to do that :) Thanks though.

Well actually I was wrong, because for blunt HTML tags it's a "LiteralControl" and not an html control so you would completely have to replace the HTML e.g.:

foreach (Control c in this.Controls)
   {
       if (c is LiteralControl)
       {
           LiteralControl hc = c as LiteralControl;
           hc.Text = "<img src=\"http://myimageSource.jpg\" />";
       }
   }

If you don't want to do that then you have to convert it to a class.

I agree with dachusa, it's just the way it is. I was never suggesting that you should do it as I posted, but that it's possible to do it that way.

Hi guys

Ok thanks - I guess it's pretty clear that I will have to use CssClass then.
As jkofte was the first to suggest this, but it was also reaffirmed by others, I have decided to split the points to be fair. Any objections to this or should Jkofte get them all?