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Throw vs throw ex in C# example

Rasel Ahmed answered on November 10, 2022 Popularity 9/10 Helpfulness 3/10

answer Throw vs throw ex in C# example

Throw vs throw ex in C# example

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The difference between “throw” and “throw ex” is that “throw”
preserves the stack trace (the stack trace will point to the method that caused
the exception in the first place) while ”throw ex” does not preserve the stack
trace (we will lose the information about the method that caused the exception
in the first place. It will seem like the exception was thrown from the place of its
catching and re-throwing)
  
  
public class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Method2();
            }
            catch (Exception ex)
            {
                Console.Write(ex.StackTrace.ToString());
                Console.ReadKey();
            }
        }

        private static void Method2()
        {
            try
            {
                Method1();
            }
            catch (Exception ex)
            {
                //throw ex resets the stack trace Coming from Method 1 and propogates it to the caller(Main)
                throw ex;
            }
        }

        private static void Method1()
        {
            try
            {
                throw new Exception("Inside Method1");
            }
            catch (Exception)
            {
                throw;
            }
        }
    }

Popularity 9/10 Helpfulness 3/10 Language csharp

Source: Grepper

Tags: c# ex throw

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Contributed on Nov 10 2022

Rasel Ahmed

0 Answers Avg Quality 2/10

Throw vs throw ex in C# example

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