Question

How can I handle exceptions in a linq query? For example if I have the following query:

var query = (from d in GetLHDb().daily_average
             where d.findnsave_site_id == fnsID 
                   && d.test_path_id == pathId 
                   && d.date > nTimesDays 
                   && d.date <= yesterday
             select new
             {
                 loadtime = d.loadtime,
                 created_at = d.date
             }).ToArray();

for instance, how can i handle the null exception inside the query? I have searched online but a lot of them are for VB.

Answer 1

In your case, just like you would any other place in your code. Wrap your .ToArray() in a try/catch block. Although in your case I would just be more defensive and handle the null value properly.

try
{
    var query = (from d in GetLHDb().daily_average
    where d.findnsave_site_id == fnsID && d.test_path_id == pathId && d.date >                           nTimesDays && d.date <= yesterday
select new { loadtime = d.loadtime, created_at = d.date }).ToArray();
}
catch (Exception)
{
  //do what you need to
}