I would like to select unique EventYear using following code in c# Its giving duplicate values. my table (EventMasters)
structure is (EventYear (string), EventCode, EventDescription)
I want to select unique or distinct EventYear
public ActionResult EventYearsMenu()
{
var eventyears = storeDB.EventMasters.Distinct().ToList().OrderByDescending(c => c.EventYear== c.EventYear.Distinct());
return PartialView(eventyears);
}
I want to select unique or distinct
EventYear
Isn't it just:
var eventyears = storeDB.EventMasters
.Select(c => c.EventYear)
.Distinct()
.ToList();
Try like this
var eventyears = from Data in storeDB.EventMasters
where (this == that) // Write your Logic
select Data;
if (eventyears != null)
{
/// do your code,,.,,,
}
Try following
var eventyears = storeDB.EventMasters
.GroupBy(c=>c.EventYear)
.Select(items=>items.First())
.SelectMany(item->item)
.ToList()
.OrderByDescending(c => c.EventYear == c.EventYear.Distinct());
it will take distinct items (based on EventYear). (it is possible to have items with same EventYear classified as same, even though they have different values for some other properties)
Try this
var eventyears = storeDB.EventMasters.ToList()
.OrderByDescending(c => c.EventYear == c.EventYear).Distinct();
You can try this code.
var eventyears = storeDB.EventMasters.Distinct(q => q.EventYear.).ToList().OrderByDescending(c => c.EventYear);
return PartialView(eventyears);
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