http://www.c-sharpcorner.com/UploadFile/akkiraju/difference-between-throw-exception-and-throw-clause/
Program is given in the above website. In the 1st example the output is not coming like as shown I don't know why it may be due to the different version of VS express. Not only that how trace is in the output without StackTrace is in code.
System.Exception was unhandledMessage=Original Exception occurred in ExceptionMethodSource=TestingThrowExceptionsStackTrace:at TestingThrowExceptions.Program.Main(String[] args) in C:\TestProjects\TestingThrowExceptions\TestingThrowExceptions\Program.cs:line 26