Question

I do not know much about these technologies, and was not very successful at finding how an exception stack is displayed.

Therefore, several basic questions:

• how are 2 independent successive exceptions shown?
• how are several chained exceptions displayed?
• is the root cause displayed at the top or the bottom of the stack?

Answer 1

It’s pretty easy to try this for yourself. For example:

using System;

class Test
{
    static void Main(string[] args)
    {
        try
        {
            Top();
        }
        catch (Exception e)
        {
            Console.WriteLine(e);
        }
    }

    static void Top()
    {
        try
        {
            Middle();
        }
        catch (Exception e)
        {
            throw new Exception("Exception from top", e);
        }
    }

    static void Middle()
    {
        try
        {
            Bottom();
        }
        catch (Exception e)
        {
            throw new Exception("Exception from middle", e);
        }
    }

    static void Bottom()
    {
        throw new Exception("Exception from bottom");
    }
}

Results (the first two lines would be on one line if it were long enough):

System.Exception: Exception from top ---> System.Exception: Exception from middle
      ---> System.Exception: Exception from bottom
   at Test.Bottom() in c:\Users\Jon\Test\Test.cs:line 43
   at Test.Middle() in c:\Users\Jon\Test\Test.cs:line 33
   --- End of inner exception stack trace ---
   at Test.Middle() in c:\Users\Jon\Test\Test.cs:line 37
   at Test.Top() in c:\Users\Jon\Test\Test.cs:line 21
   --- End of inner exception stack trace ---
   at Test.Top() in c:\Users\Jon\Test\Test.cs:line 25
   at Test.Main(String[] args) in c:\Users\Jon\Test\Test.cs:line 9