EF 4: The specified type member '*' is not supported in LINQ to Entities

Question

i have a mapped-class like this:

[Table(\"MyTable\")]
class MyClass         
{   
        //properties; id, name, etc...

        private string _queuedToWHTime          


        

Answer 1

You cannot query with EF on custom properties. The custom property cannot be translated in SQL.

You can do this to force the orderby to be done 'in-memory'.

var searchRslt = queryableNews
    .AsEnumerable()
    .OrderBy(m => m.QueuedToWHTime_DateTime)
    .ToList();

Answer 2

The issue is here:

var searchRslt=(from m in queryableNews
orderby m.QueuedToWHTime_DateTime descending
select m).ToList();

you are trying to use the property .QueuedToWHTime_DateTime, but that does not exist in the database. You need to use the names that are used in the database. In this case .QueuedToWHTime So:

var searchRslt=(from m in queryableNews
orderby m.QueuedToWHTime descending
select m).ToList();

If the database propery is not usable in this scenario, you will have to pull the entire list, convert it to an IEnumerable (any will do), then filter/order that IEnumerable by its property.

Something like this:

var result = queryableNews.ToList().OrderbyDescending(x=>x.QueuedToWHTime_DateTime).ToList();