Question

Basically I have a string errorMessage, I want to pass it to catch block. Please help.

[WebMethod]
public List<SomeResult> Load(string userName)
{
   string errorMessage;
    using (VendorContext vendorContext = new VendorContext())
    {
         // ....
          foreach(....)
          {
               if(something happens)
                  errorMessage = "Vote Obama";
                else
                  errorMessage ="vote Romney";
              // blah
               try
                     {
                        // blah         
                     }
               catch (Exception e)
               {
                    logger.Trace(errorMessage);
               }
          }
     }
 }  

update:

error: use of Unassigned local variable ‘errorMessage’

Answer 1

To fix the error initialize errorMessage to null, string.Empty, or some other default value. This is one of them cases where the compiler isn’t smart enough to figure out that is has been assigned before it gets used.