How can I use this method to reuse my try/catch?

Question

I found this method (function?) from another SO question and I'm unsure how I'm to use it. I'd like to use it to catch connectivity issues to my DB (over a wireless network) and retry or throw other exceptions. My application only has a couple of database accessing functions so I was about to just copy and paste everything but I don't want to have to update every function 10 times if I need to change something.

Method I want to use:

        private void Retry<T>(Action<T> retryAction) where T : DataContext, new()
    {
        var retryCount = 0;
        using (var ctx = new T())
        {
            for (; ; )
            {
                try
                {
                    retryAction(ctx);
                    break;
                }
                catch (SqlException ex)
                {
                    if (!Enum.IsDefined(typeof(RetryableSqlErrors), ex.Number))
                        throw;

                    retryCount++;
                    if (retryCount > MAX_RETRY) throw;

                    Thread.Sleep(ex.Number == (int)RetryableSqlErrors.Timeout ?
                                                            longWait : shortWait);
                }
            }
        }
    }

Example of functions I want to pass to it:

public async Task<List<EmployeeDisplay>> GetInspectorsAsync()
    {
        using (M1Context m1 = new M1Context())
        {

            var q = (from a in m1.Employees
                     where (a.lmeTerminationDate == null)
                     && (a.lmeInspectorEmployee == -1)
                     orderby a.lmeEmployeeName
                     select new EmployeeDisplay
                     {
                         EmployeeID = a.lmeEmployeeID,
                         EmployeeName = a.lmeEmployeeName.ToUpper().Trim()
                     });

            return await q.ToListAsync();
        }

    }


       public async Task<List<Reason>> GetScrapReasonsAsync()
    {
        using (M1Context m1 = new M1Context())
        {

            Debug.WriteLine("getting scrap reasons");
            var q = (from a in m1.Reasons
                     where a.xarReasonType.Trim().Equals("S")
                     select a);

            return await q.ToListAsync();

        }
    }

Answer 1

To to use the method you need to do the following

1. Your Context

2. Your Retry Method

3. Your Do Stuff method

4. Enum