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

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'.

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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.

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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.

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Status

This behavior is by design.

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More Information

Steps to Reproduce the Behavior

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

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References

For more information about building assemblies, visit the following MSDN Web site:
http://msdn.microsoft.com/en-US/library/b0b8dk77(v=vs.80)

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Keywords: kbvs2003swept, kbaspwpswept, kbcompiler, kbdsupport, kberrmsg, kbprb, kbwebforms, kb

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Article Info
Article ID : 306155
Revision : 3
Created on : 4/17/2018
Published on : 4/17/2018
Exists online : False
Views : 970