Available on NuGet
Visual Studio:
PM> Install-Package gt.Collections.OrderedList.NET Core CLI:
dotnet add package gt.Collections.OrderedListvar list = OrderedCollection<int>.Create(n => n); // or new OrderedCollection<int, int>(n=>n)
list.Add(2);
list.Add(-1);
list.Add(3);
list.Add(0);
Console.WriteLine(string.Join(", ", list)); // -1, 0, 2, 3var list = OrderedCollection<TestNotifyObj>.Create(n => n.Order); // collection uses bisect-right logic by default
var o1 = new TestNotifyObj(2);
var o2 = new TestNotifyObj(3);
var objectToChange = new TestNotifyObj(1);
list.Add(o1);
list.Add(o2);
list.Add(objectToChange);
Console.WriteLine(string.Join(", ", list)); // Id: 3, Order: 1; Id: 1, Order: 2; Id: 2, Order: 3
objectToChange.Order = 2;
Console.WriteLine(string.Join(", ", list)); // Id: 1, Order: 2, Id: 3, Order: 2, Id: 2, Order: 3
...
public class TestNotifyObj : INotifyPropertyChanged
{
private int _order;
private static int _lastId;
public TestNotifyObj()
{
Id = ++_lastId;
}
public TestNotifyObj(int order) : this()
{
Order = order;
}
public int Id { get; }
public int Order
{
get => _order;
set
{
if (value == _order) return;
_order = value;
OnPropertyChanged();
}
}
public override string ToString()
{
return $"Id: {Id}, Order: {Order}";
}
public event PropertyChangedEventHandler PropertyChanged;
[NotifyPropertyChangedInvocator]
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}You also can use OrderedList instead of OrderedCollection.
You can change mode by passing sortMethod parameter to the constructor or static method Create of collection.
If entries with same order are already present in collection, the insertion point will be after (to the right of) any existing entries.
new OrderedCollection<TestNotifyObj, int>(n=>n.Order, sortMethod: SortMethod.BisectRight);If entries with same order are already present in collection, the insertion point will be before (to the left of) any existing entries.
new OrderedCollection<TestNotifyObj, int>(n=>n.Order, sortMethod: SortMethod.BisectLeft);BinarySearchHelper - Binary search algorithm implementation logic for generic collection.
SortingHelper - Binary search algorithm with right and left insertion modes logic.
Contributions are highly welcome. If you have found a bug or if you have a feature request, please report them at this repository issues section.
This project is licensed under the MIT license. See the LICENSE file for more info.