Indexing an Entity

Question

In my silverlight project I have many views that all need the same method, "Tester()". Obviously I want this method to be resusable but I am just not getting there.

What I have is this:

    void Tester(IList<MyEntity> list)
    {
        var sortedlist=list.OrderBy(me=>me.Sortkey).ToList();
    }

This works fine, but only for MyEntity.

What I really want is essentially this:

 void Tester<T>(IList<T> list, string mySortField)
    {
        var sortedlist=list.OrderBy("mySortField").ToList();
    }

Doesn't compile.

Any ideas how to do this, please ? Thx in advance, Frank

Take a look at http://stackoverflow.com/questions/41244/dynamic-linq-orderby/233505#233505 — Haris Hasan, Jan 16 '12 at 12:04
@Haris that should be an answer. If you don't do that I will :) — DanTheMan, Jan 16 '12 at 14:29
As suggested by Haris I ended up using DynamicQueryable which worked just fine. BTW: Had to comment out all references to ReadWriterLock as it isn't supported in SL 5. — bluewater, Jan 17 '12 at 07:45

score 0 · Accepted Answer · answered Jan 16 '12 at 14:42

You could do this:

void Tester<T>(IList<T> list, Func<T, object> mySort) {
    var sortedlist=list.OrderBy(mySort).ToList();
}
...
Tester<MyEntity>(list, t => t.mySortField);

Although it's a little more verbose than passing a string, at least you get compile-time checking of sort fields.

Indexing an Entity

1 Answers1