OrderBy not having any effect in LINQ

Question

I have a table that has a set of data in it, as follows:

Notice the above results are gathered by the following SQL query:

select * from Logs wh         


        

Answer 1

As @Ivan Stoev already mentioned: OrderBy before Distinct / GroupBy is ignored by LINQ to Entities sql translator.

But if you must use it, use it before the OrderBy

 var logs = db.Logs.Where(x => x.RegisterationId == EnrollNumber && x.Date >= 
                    StartDate && x.Date <= EndDate && x.isIgnore != true).Distinct().OrderBy(x => x.DateTime).ToList();

Excluding the Distinct() should give you the appropriate list:

var logs = db.Logs.Where(x => x.RegisterationId == EnrollNumber && x.Date >= 
                   StartDate && x.Date <= EndDate && x.isIgnore != true).OrderBy(x => x.DateTime).ToList();

Answer 2

.Distinct destroys order. Switch the position of the Distinct and the OrderBy calls.