FIX: Type Library Importer (Tlbimp.exe) Fails to Parse Certain Type Libraries (316552)

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.

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 INFO: How to Obtain the Latest .NET Framework Service Pack

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;
	};
};