FIX: Type Library Importer (Tlbimp.exe) Fails to Parse Certain Type Libraries

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View products that this article applies to.

This article was previously published under Q316552

SYMPTOMS

If you use two coclasses, such as Test and TestClass, and a method or property that is named TestClass, the Type Library Importer (Tlbimp.exe) fails, and you receive the following error message:

TlbImp error: System.TypeLoadException - Type Test.TestClass from assembly TestClass tried to override method TestClass but does not implement or inherit that method.

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RESOLUTION

To resolve this problem, obtain the latest service pack for Microsoft .NET Framework. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

318836 (http://support.microsoft.com/kb/318836/EN-US/ ) INFO: How to Obtain the Latest .NET Framework Service Pack

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STATUS

This bug was corrected in .NET Framework (2003|1.1).

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MORE INFORMATION

Steps to Reproduce the Behavior

Create a new .idl file with the following code, and then save the file as Test.idl.

[uuid(B109B266-FFA6-482a-BF17-8A1F49A83E6E), version(1.0), helpstring("Q316552 1.0 Type Library")]
library Test
{
	importlib("stdole2.tlb");
	
	[uuid(3CD087A6-3693-4c97-A599-EC7C231C59CA), oleautomation]
	interface ITest : IUnknown 
	{
		HRESULT TestClass([in] int i);
	}

	[uuid(08045E96-5742-486c-8604-925BBEB9AD61), helpstring("Test Class")]
	coclass Test 
	{
		[default] interface ITest;
	};

	[uuid(13803111-45FA-4368-A540-66030894AE7F), helpstring("TestClass Class")]
	coclass TestClass 
	{
		[default] interface IUnknown;
	};
};

Run Microsoft Interface Definition Language (MIDL) against Test.idl to generate the corresponding type library file, as follows:
midl test.idl
Run Tlbimp to import this type library, as follows:
tlbimp test.tlb /out:TestNET.dll /namespace:Test
Note that Tlbimp fails with the System.TypeLoadException error message.

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APPLIES TO

Microsoft .NET Framework Software Development Kit 1.0 Service Pack 2
Microsoft .NET Framework Class Libraries 1.0

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kbbug kbcominterop kbfix KB316552

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Retired KB Content Disclaimer

This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.

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