How to put an item from a middle of a list, on a first place?

Question

What I have is a binding list:

BindingList<partner> partnerList = _context.partner.Local.ToBindingList();

this._view.PartnerDatasource.DataSource = partnerList;

This is a datasource for a drop down menu. What I want is to put a specific item to show as first item in a drop down. I tried something like this:

 public  void Swap<T>(IList<T> list, int indexA, int indexB)
        {
            T tmp = list[indexA];
            list[indexA] = list[indexB];
            list[indexB] = tmp;
        }

and then:

 this.Swap(partnerList, 0, partnerList.Count - 1);

This works when it comes to swapping, but it somehow messes up entity framework completely and I get various errors further on when I try to use these entities (partner)...

What would an appropriate way to do the this?

Answer 1

var names = new [] { "Alice", "Bob", "Charlie", "Dave", "Eve" };
var specialName = "Eve";

var sortedNames = names.OrderByDescending(x => x == specialName);
foreach (var name in sortedNames)
    Console.WriteLine(name);

Result:

Eve
Alice
Bob
Charlie
Dave