Article ID: 306155 - Last Review: May 17, 2004 - Revision: 3.3

PRB: "Could not load type" error message when you browse to .aspx page by using Visual C# .NET

View products that this article applies to.

System TipThis article applies to a different operating system than the one you are using. Article content that may not be relevant to you is disabled.

This article was previously published under Q306155

SYMPTOMS

When you browse to an .aspx page, you may receive one of the following error messages:

Could not load type 'Namespace.Global'.

-or-

Could not load type 'Namespace.PageName'.

Back to the top

CAUSE

These errors occur if the .aspx page or the Global.asax page contains a reference to a code-behind module and if the application has not been built.

Back to the top

RESOLUTION

Use one of the following methods to build the application:

Use the C# command line compiler (CSC.exe) to run the following command:
csc /t:library /r:System.web.dll /out:mydll.dll myfile.cs
In Microsoft Visual Studio .NET, click Build on the Build menu.

NOTE: Microsoft Visual Basic .NET background compiles the project as soon as it is created. Because Visual C# .NET projects only background parse, you must explicitly build the application.

Back to the top

STATUS

This behavior is by design.

Back to the top

MORE INFORMATION

Steps to Reproduce the Behavior

Start Visual Studio .NET.
On the File menu, point to New, and then click Project.
Click Visual C# Projects under Project Types, and then click ASP.NET Web Application under Templates.
Right-click WebForm1.aspx, and then click View in Browser.