Using themed css files requires a header control on the page. (e.g. )

Question

I'm working on asp.net web project. When I run the project, It works correctly. But In server, I got the following error. How to solve this problem?

Using themed css files requires a header control on the page. (e.g. `<head runat="server" />`).
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. How to solve this problem?

Exception Details: System.InvalidOperationException: Using themed css files requires a header control on the page. (e.g. `<head runat="server" />`).

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:
[InvalidOperationException: Using themed css files requires a header control on the page. (e.g. <head runat="server" />).]
   System.Web.UI.PageTheme.SetStyleSheet() +2458406
   System.Web.UI.Page.OnInit(EventArgs e) +8699420
   System.Web.UI.Control.InitRecursive(Control namingContainer) +333
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint,  Boolean includeStagesAfterAsyncPoint) +378

Suvendu Shekhar Giri · Accepted Answer

I feel none of the answers made above can resolve the actual issue faced by user if the page is not meant to render html. In this case, the solution is - just paste following

EnableTheming = "False" StylesheetTheme="" Theme=""

in the @Page attribute of that page.

For example, the following source code sample:

DownloadFile.aspx.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DownloadFile.aspx.cs"
    Inherits="WebUI.Monitorization.DownloadFile"  EnableTheming="False" StylesheetTheme="" Theme=""   %>

Pharabus · Answer

you need a head tag with runat="server" in the page (or master page) as below

<head runat="server">
    <title></title>
</head>

Michael · Answer

For me the cause was missing the PrecompiledApp.config file on the live server since I pre-compile sites before uploading.

alcor · Answer

Be sure to have just the files you need in the bin folder. If you have other dlls (old versions of actual dlls varying just by their name) strange-things-may-happen.

Using themed css files requires a header control on the page. (e.g. <head runat="server" />)

Tags:

ozkank

4 Answers

Suvendu Shekhar Giri

Pharabus

Michael

alcor

Recent Activity

Donate For Us