i have a generic sorted list "results" with key = some filename and value = boolean.
I would like to sort the list by the boolean entry or value column. does anyone know how i can do this?
Thanks!
SortedList is optimized so that inertions occur in an ordered fashion, such that enumeration occurs in a sorted order at minimal cost. Anything else requires a re-sort. Thus:
SortedList<string,bool> l = new SortedList<string, bool>();
l.Add("a", true);
l.Add("b", false);
l.Add("c", true);
l.Add("d", false);
var orderByVal = l.OrderBy(kvp => kvp.Value);
but this enumeration will be significantly slower to calculate, and be performed up-front, requiring extra storage to do so.
Depending on your situation it might be cheaper to maintain 2 SortedList instances with the key/value reversed.
For descending all list items
list.OrderByDescending();
or
var list = list.OrderByDescending(x => x.Product.Name)
.ThenBy(x => x.Product.Price).ToList();
In .NET 2.0, you could add your items to a SortedList:
public static List<MyObject> SortedObjects(IEnumerable<MyObject> myList) {
SortedList<string, MyObject> sortedList = new SortedList<string, MyObject>();
foreach (MyObject object in myList) {
sortedList.Add(object.ValueIWantToSort, object);
}
return new List<MyObject>(sortedList.Values);
}
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