April 12, 2014For apps that target Windows Phone OS 7.0 and 7.1, do not use any members of this type in your app. If you do, your code will throw a MethodAccessException. This type is security-critical, which restricts it to internal use by the .NET Framework for Windows Phone class library.System.IO
Assembly: System.Runtime.WindowsRuntime (in System.Runtime.WindowsRuntime.dll)
Thetype exposes the following members.