Retry iteration on exception

Question

I am running a loop to iterate an object list and its property values.

When I try to access the ojects values I get an exception error because it is not ready (I think).

i.e.

foreach (oject obj in ObjectList)

{

     //Using object property here that MAY raise exception if used too soon

     obj.MyProperty;

}

I am having trouble finding a way to determine if the object is ready, but if I can simply retry it after a second or 2 it will work.

My question is, if an exception is raised when I access obj.MyProperty, how can I get the loop to re-try the same iteration?

Answer 1

check this link ....
http://stackoverflow.com/questions/1563191/c-sharp-cleanest-way-to-write-retry-logic

---

Peter Koueik

Answer 2

You can create while loop inside the for each to re-try operation specified times. Create try-catch block inside it, then read MyProperty insite the try block. In catch block you need to check and set the counter and if re-try limit is reached then throw exception. But before doing this kind of an solution, I would inspect that I really know why the exception is occurs, expecially when using getter of the property that usually do not throw exceptions.

foreach (Object item in list)
{
     int retryCounter = 0;

     while (true)
     {
        try
        {
             // do operation that might throw exception
             // but can be tried again

             break;
        }
        catch (Exception e)
        {
           if (retryCounter < 5)
           {
              retryCounter++;
              Thread.Sleep(200);
           }
           else
           {
              throw;
           }
        }
     }
}