Continue in nested while loops

Question

In this code sample, is there any way to continue on the outer loop from the catch block?

while
{
   // outer loop

   while
   {
       // inner loop
       try
       {
           throw;
       }
       catch 
       {
           // how do I continue on the outer loop from here?
           continue;
       }
   }
}

Answer 1

You can use a break; statement.

while
{
   while
   {
       try
       {
           throw;
       }
       catch 
       {
           break;
       }
   }
}

Continue is used to jump back to the top of the current loop.

If you need to break out more levels than that you will either have to add some kind of 'if' or use the dreaded/not recommended 'goto'.

Answer 2

using System;

namespace Examples
{

    public class Continue : Exception { }
    public class Break : Exception { }

    public class NestedLoop
    {
        static public void ContinueOnParentLoopLevel()
        {
            while(true)
            try {
               // outer loop

               while(true)
               {
                   // inner loop

                   try
                   {
                       throw new Exception("Bali mu mamata");
                   }
                   catch (Exception)
                   {
                       // how do I continue on the outer loop from here?

                       throw new Continue();
                   }
               }
            } catch (Continue) {
                   continue;
            }
        } 
    }

}

}

Answer 3

No.
I suggest, extracting the inner loop into a separate method.

while
{
   // outer loop
       try
       {
           myMethodWithWhileLoopThatThrowsException()
       }
       catch 
       {
           // how do I continue on the outer loop from here?
           continue;
       }
   }
}

Answer 4

You just want to break from the inner which would continue the outer.

while
{
   // outer loop

   while
   {
       // inner loop
       try
       {
           throw;
       }
       catch 
       {
           // how do I continue on the outer loop from here?
           break;
       }
   }
}