icomparer

I have a collection of strings in c#, for example; var example = new string[]{"c", "b", "a", "d"}; I then with to sort this, but my IComparer method is not working, and looping infinitely by the seems of things. Basically I need "b" to come first, followed by "c" , then I dont care about the order of any of the others. Is this possible using I Comparer<string> and the Compare(string x, string y) method? Edit: Code public int Compare(string x, string y) { var sOrder = new string[] { "b", "c" }; int index_x = -1; int index_y = -1; for (int i = 0; i < sOrder.Length;i++) { if (sOrder[i] == x)

This question already has an answer here: When to use IComparable<T> Vs. IComparer<T> 8 answers What is the difference between IComparable and IComparer Interfaces? Is it necessary to use this interface always with Array.Sort() method nawfal As the name suggests, IComparable<T> reads out I'm comparable . IComparable<T> when defined for T lets you compare the current instance with another instance of same type. IComparer<T> reads out I'm a comparer, I compare . IComparer<T> is used to compare any two instances of T , typically outside the scope of the instances of T . As to what they are for

I'm trying to figure out which of these interfaces I need to implement. They both essentially do the same thing. When would I use one over the other? Well they are not quite the same thing as IComparer<T> is implemented on a type that is capable of comparing two different objects while IComparable<T> is implemented on types that are able to compare themselves with other instances of the same type. I tend to use IComparable<T> for times when I need to know how another instance relates to this instance. IComparer<T> is useful for sorting collections as the IComparer<T> stands outside of the

I have a generic List<MyClass> where MyClass has a property InvoiceNumber which contains values such as: 200906/1 200906/2 .. 200906/10 200906/11 200906/12 My list is bound to a BindingList<T> which supports sorting with linq: protected override void ApplySortCore( PropertyDescriptor property, ListSortDirection direction) { _sortProperty = property; _sortDirection = direction; var items = this.Items; switch (direction) { case ListSortDirection.Ascending: items = items.OrderByDescending(x => property.GetValue(x)).ToList(); break; case ListSortDirection.Descending: items = items