I have an user control inside an UpdatePanel. Once an event is triggered and updates the user control - it seems to lose its css styles. This happened to me in IE8 only, whi
I had the same issue with my application, it seemed to kill all styling in my dynamic panel... I corrected it by moving the content placeholder (place I write the dynamic HTML to) into the < head> tag on my master page.
Working! Thank you all :)
Copy the css from user control to the page will solve it.
I had similar problem.
I solved it moving css <link ..
from the <page>
to the <header>
.
Since I use a MasterPage and I don't want the link in all pages, I found useful putting a ContentPlaceHolder in the MasterPage's Header
<head id="Head1" runat="server">
...
<asp:ContentPlaceHolder ID="HeaderContentPlaceHolder" runat="server"/>
</head>
and then the link inside the desired page:
<asp:Content ID="Content2" ContentPlaceHolderID="HeaderContentPlaceHolder" Runat="Server">
<link rel="stylesheet" type="text/css" href="CSS/my.css" />
</asp:Content>
This issue is mentioned here.
I tried the suggestion - registering the css link in the OnInit - and it seems to work.
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
ScriptManager sm = ScriptManager.GetCurrent(Page);
if (!sm.IsInAsyncPostBack)
{
string css = string.Format("<link rel=\"stylesheet\" href=\"{0}\" type=\"text/css\" />", ResolveUrl(CssClassFile));
ScriptManager.RegisterClientScriptBlock(this, typeof(MyBlahControl), "MyBlahId", css, false);
}
}