Question

How to use throw statement in catch block with C#

Answer 1

using System;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Method();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
        static void Method()
        {
            try
            {
                int value = 1 / int.Parse("0");
            }
            catch
            {
                throw;
            }
        }
    }
}


/*
run:

Attempted to divide by zero.

*/

 

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Answer 2

using System;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Method();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
        static void Method()
        {
            try
            {
                int value = 1 / int.Parse("0");
            }
            catch (DivideByZeroException ex)
            {
                throw ex;
            }
        }
    }
}


/*
run:

Attempted to divide by zero.

*/

 

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Answer 3

using System;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Method(null);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
        static void Method(string s)
        {
            if (s == null)
                throw new ArgumentNullException("s");
        }
    }
}


/*
run:

Value cannot be null.
Parameter name: s

*/

 

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Answer 4

using System;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Method();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
        static void Method()
        {
            try
            {
                int.Parse("c#");
            }
            catch (Exception)
            {
                throw; 
            }
        }
    }
}


/*
run:

Input string was not in a correct format.

*/

 

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