This exception is thrown when you attempt to invoke a nonstatic method on a null object reference. (Note that in Beta1 of the .NET SDK, it was permissible to call a nonvirtual method against a null reference, so long as that method didn't access any of the fields in the type. In Beta2 and beyond, this "feature" has been closed and removed.) public class TargetException : ApplicationException { // Public Constructors public TargetException ( ); public TargetException (string message ); public TargetException (string message , Exception inner ); // Protected Constructors protected TargetException (System.Runtime.Serialization.SerializationInfo info , System.Runtime.Serialization.StreamingContext context ); } HierarchySystem.Object System.Exception(System.Runtime.Serialization.ISerializable) System.ApplicationException TargetException |