How do I switch a master page's CSS page programmatically during form load?  I have tried the following but neither works:

Me.Page.StyleSheetTheme = "~/Master_001.css"

Me.Page.Header.Attributes = "~/Master_001.css"

Does anybody know how to do this?

Thanks in advance...MDCragg

Did you try the putting the code in Pre Init?

Yes.  I just tried the following (each line except the last one is commented out...I didn't comment out each line as I was trying them though):

    Protected Sub PreInit(ByVal sender As Object, ByVal e As System.EventArgs)
        
            'Me.Attributes.Add("Background-image", "url(~/Images/WatchList_StopWatch.jpg)")
            'Me.Attributes.Item("background-image") = "~/Images/WatchList_StopWatch.jpg"
            'Me.Attributes("background-image") = "url(~/Images/WatchList_StopWatch.jpg) no-repeat;"

            'Me.Attributes.Add("Background-image", "url(/Images/WatchList_StopWatch.jpg)")
            'Me.Attributes.Item("background-image") = "/Images/WatchList_StopWatch.jpg"
            Me.Attributes("background-image") = "url(/Images/WatchList_StopWatch.jpg) no-repeat;"

    End Sub

                                     if (Request.Form["hdPageMode"].ToString().Equals("Edit"))

                                      else if (Request.Form["hdPageMode"].ToString().Equals("View"))

          else

                      if (this.PageMode == PageActionType.View)

                       else

If you're using themes then download http://ipona.com/temp/ThemesVB.zip; this is a sample project that shows how to dynamically change both the theme and the master page depending upon user settings (it uses the profile). The Theme architecture is quite good for this even if you're not actually uses skin files; you can just create the theme folder and place the CSS files in it and changing the theme will automatically load the CSS file. I do have a purer CSS solution somewhere that doesn't use themes, but does much the same thing, switching out the CSS files; let me know and I'll try and find it.

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