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ASP.Net - How to Set the SkinID of a Control in code behind?

Hi,

I have an image on my web page with a skinID.  Based on a condition I want to alter the SkinID at runtime.  I used this:

 Me.imgCheckOn.SkinID = "CheckedOn"         where imgCheckOn is an ASP Image.

I get the following error:
The 'SkinId' property can only be set in or before the Page_PreInit event for static controls. For dynamic controls, set the property before adding it to the Controls collection.

The problem is, if I put the code in the page_PreInit event imgCheckOn does not exist at this point.  Any ideas?
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fizzer666
Asked:
fizzer666
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1 Solution
 
SammyCommented:
when do you add this control to the control collection?
what condition you want to check before changing the SkinID?

more details or code used will be helpful in identifying a solution for the issue

Sammy

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fizzer666Author Commented:
The control is on my aspx page at design time so I don't programmatically add it to the control collection.  

I have 3 skinID's for image controls.  Each one points to a different image url.  I have a function which goes to the DB to get a value.  Based on this value I pick my Skin ID.  This part is not the problem, this all works fine.  I have actually removed this part for testing and I am just trying to change to another skinID value.

All I was originally doing was trying to set the SkinID of the image control in the Load event.  However, I got the error that The SkinID can only be set in or before the Page_PreInit event.  So, I moved "Me.imgCheckOn.SkinID = "CheckedOn" " to the Pre_init event.  The problem here is that the control doesn't seem to exist.  So how can I ever set the SkinID programmatically?

So, the only code that I have is as follows:

Front end:
<asp:Image ID="imgCheckOn" runat="server" SkinID="checkOnOff" />

Code behind:
   Protected Sub Page_PreInit(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.PreInit
           Me.imgCheckOn.SkinID = "CheckedOn"
    End Sub


Hope that makes more sense now.
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fizzer666Author Commented:
Sorry for the double post.  I've just tested this in a new website and it works.  It doesn't work because in my site I am using a master page.  So how can I get it working with a Master page?
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SammyCommented:
just replace ("Content") with your content page name
Dim tempimg As Image = TryCast(Me.Master.FindControl("Content").FindControl("imgCheckOn"), Image)
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SammyCommented:
Opps after that line you can do
tempimg.SkinID="CheckedOn"
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