Csharp/C Sharp/Language Basics/throw

Exception Translation: CLR catches an exception and rethrows a different exception. The inner exception contains the original exception.

<source lang="csharp"> using System; using System.Reflection;

public class MyClass {

   public static void MethodA() {
       Console.WriteLine("MyClass.MethodA");
       throw new Exception("MethodA exception");
   }

} public class Starter {

   public static void Main() {
       try {
           Type zType = typeof(MyClass);
           MethodInfo method = zType.GetMethod("MethodA");
           method.Invoke(null, null);
       } catch (Exception except) {
           Console.WriteLine(except.Message);
           Console.WriteLine("original: " + except.InnerException.Message);
       }
   }

}

</source>

Throw and catch Exception

<source lang="csharp"> using System; class ExceptionThrower {

   static void MethodOne() {
       try {
           MethodTwo();
       } finally { }
   }
   static void MethodTwo() {
       throw new Exception("Exception Thrown in Method Two");
   }
   public static void Main(String[] args) {
       try {
           ExceptionThrower FooBar = new ExceptionThrower();
           MethodOne();
       } catch (Exception e) {
           Console.WriteLine(e.Message);
       } finally {
           // Cleanup code
       }
   }

}

</source>

Throw exception from getter

<source lang="csharp"> using System; public class MyValue {

   public String Name;

} class CardDeck {

   private MyValue[] Cards = new MyValue[52];
   public MyValue GetCard(int idx) {
       if ((idx >= 0) && (idx <= 51))
           return Cards[idx];
       else
           throw new IndexOutOfRangeException("Invalid Card");
   }
   public static void Main(String[] args) {
       try {
           CardDeck PokerDeck = new CardDeck();
           MyValue HiddenAce = PokerDeck.GetCard(53);
       } catch (IndexOutOfRangeException e) {
           Console.WriteLine(e.Message);
       } catch (Exception e) {
           Console.WriteLine(e.Message);
       } finally {
           // Cleanup code
       }
   }

}

</source>