You can apply this attribute to assemblies.

By default, the Type Library Exporter (Tlbexp.exe) generates a type library version from the first two numbers of an assembly version. For example, Tlb.exe exports assembly version 1.2.5000.0 as a type library version 1.2, eliminating the build and revision numbers of the assembly. If this behavior is undesirable, you can control the generation of the type library number explicitly by applying the TypeLibVersionAttribute.

It is useful to control the generation of a type library version explicitly when two assembly versions produce the same type library version. For example, assembly version 1.2.0.0 and assembly version 1.2.500.0 both produce a type library version of 1.2, which can cause problems when you uninstall one of the assemblies. To differentiate the type library versions, you can force the second assembly (version 1.2.500.0) to produce a type library version of 1.25.

The following example shows how to apply the TypeLibVersionAttribute to explicitly set the type library version to 1.25.

Imports System
 Imports System.Runtime.Interop
 <Assembly: AssemblyVersion ("1.2.500.0")>
 <Assembly: TypeLibVersionAttribute(1,25)>
 Module MyNamespace
   Public Class c
     ' Insert code.
   End Class

using System;
 using System.Runtime.InteropServices;
 [Assembly: AssemblyVersion ("1.2.500.0")>
 [Assembly: TypeLibVersion(1,25)]
 namespace MyNamespace
 {
   class MyClass
   {
     // Insert code.
   }
 }

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

.NET Framework

Reference

Other Resources