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Compiler Warning (level 1) CS0809
Obsolete member 'memberA' overrides non-obsolete member 'memberB'.
Typically, a member that is marked as obsolete should not override a member that is not marked as obsolete. This warning is generated in Visual Studio 2008 but not in Visual Studio 2005.
To correct this error
public class Base
public virtual void Test1()
public class C : Base
public override void Test1() // CS0809
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