Assembly: mscorlib (in mscorlib.dll)
The Type to compare with the current Type.
Return Valuetrue if the Type represented by the c parameter and the current Type represent classes, and the class represented by the current Type derives from the class represented by c; otherwise, false. This method also returns false if c and the current Type represent the same class.
The c parameter is a null reference (Nothing in Visual Basic).
The IsSubclassOf method cannot be used to determine whether an interface derives from another interface, or whether a class implements an interface. Use the GetInterface method for that purpose. Note that if a type is dervived from an interface, this method returns true for that type being a subclass of Object.
If the current Type represents a type parameter in the definition of a generic type or generic method, it derives from its class constraint or from System.Object if it has no class constraint.
If the IsSubclassOf is the converse of IsAssignableFrom. That is, if t1.IsSubclassOf(t2) is true, then t2.IsAssignableFrom(t1) is also true.
This method can be overridden by a derived class.
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.