Gets a Boolean value indicating whether the compiler will treat usage of the obsolete program element as an error.
Assembly: mscorlib (in mscorlib.dll)
The following example defines a class that contains two members marked as obsolete. The first, a property named OldProperty, produces a compiler warning if it is called. The second, a method named CallOldMethod, produces a compiler error. The example uses reflection to get information about the ObsoleteAttribute attributes applied to members of the type and displays the values of their Message and properties.
.NET FrameworkSupported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
.NET Framework Client ProfileSupported in: 4, 3.5 SP1
XNA FrameworkSupported in: 3.0, 2.0, 1.0
Portable Class LibrarySupported in: Portable Class Library
Supported in: Windows Phone 8.1
Supported in: Windows Phone Silverlight 8.1
Supported in: Windows Phone Silverlight 8