using System;

​

// see: https://stackoverflow.com/documentation/c%23/40/exception-handling/169/using-the-exception-object#t=201706260855258771454

public class Program

{

​

​

    void DoSomething() 

    {

        int b=1; int c=5;

        try

        {

            var a = 1; 

            b = a - 1;

            c = a / b;

            a = a / c;

        }        

        catch (DivideByZeroException dEx) when (b==0)

        {

            // we're throwing the same kind of exception

            throw new DivideByZeroException("Cannot divide by b because it is zero", dEx);

        }

        catch (DivideByZeroException dEx) when (c==0)

        {

            // we're throwing the same kind of exception

            throw new DivideByZeroException("Cannot divide by c because it is zero", dEx);

        }

    }

    public void Main()

    {    

        try

        {

            DoSomething();

        }

        catch (Exception ex)

        {

            // Logs full error information (incl. inner exception)

            Console.Write(ex.ToString()); 

        }    

    }

}

​

​