Hi, I finally found the cause of the problem, I found the cause, since a RadTabStrip was losing the styles, then describe the context of what happens:
Our application allows a user to globally choose the skin of your dashboard, this data is stored in the database so that each time you enter the user application uses the selected skin.
Since the application that presents the problem is in an iframe of the main application, my application receives the default.aspx skin name to use, and then I store it in the session object.
Additionally, in the MasterPage, I have a RadSkinManager that the item set passed through URL SkinName within the page's Load event.
In the MasterPage using my application, I have the following code:
In the SkinManager Markup:
<telerik:RadSkinManager runat="server" PersistenceMode="Session" ID="rSkM"/>
And in the CodeBehind:
Public Property Tema As String = "Office2007"
Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
If GetCurrentPage.ToLower = "default.aspx" Then
If Request.QueryString.AllKeys.Contains("Tema") Then
Me.Tema = Request.QueryString("Tema")
Me.Tema = "Office2007"
Session("tema") = Me.Tema
Me.Tema = Session("tema")
'Reference to RadSkinManager
Me.rSkM.Skin = Me.Tema
The odd thing is that since it is a MasterPage, from the pages that use that MasterPage I link stylesheets depending on each page. To link the style sheets from pages that use MasterPage, use a ContentPlaceHolder.
I did several tests, and detected the following, if not link any style sheet from the ContentPlaceHolder (That is, if I leave the MasterPage only with the original style sheets), everything works great, but if I reference ContentPlaceHolder within any stylesheet (even if it is empty), they begin to lose the styles of the Telerik controls. I SHOULD CLARIFY THAT THIS ONLY HAPPENS IN INTERNET EXPLORER, In Firefox, is OK.
It is also worth mentioning that this problem only I have been presented so far (that I have noticed) with RadGrid and RadTabStrip.
What I can do to solve this problem?
Thank you very much