So I came across an interesting problem today. We have a WCF web service that returns an IList. Not really a big deal until I wanted to sort it. Turns out the IList interface doesn't have a sort method built in. I ended up using the ArrayList.Adapter(list).Sort(new MyComparer()) method to solve the problem but it just seemed a bit "gh...
I've got a data object with a component in it that is an System.Collections.Generic.IList, and I'd like to reflect changes to that list into a Gtk# NodeView, so that when an item is added to the list, the NodeView will get a new item added to it. How would I listen for changes to an IList? I have considered wrapping the IList with a ...
Hi everyone, I am currently coding a simple Data Access Layer, and I was wondering which type I should expose to the other layers. I am going to internally implement the Data as a List<>, but I remember reading something about not exposing the List type to the consumers if not needed. public List<User> GetAllUsers() // non C# users: t...
What is the correct syntax for this: IList<string> names = "Tom,Scott,Bob".Split(',').ToList<string>().Reverse(); What am I messing up? What does TSource mean? ...
When I have entities in my domain with lists of things, should they be exposed as ILists or IEnumerables? E.g. Order has a bunch of OrderLines. ...
Can anyone explain to me why I would want to use IList over List in C#? Related question: Why is it considered bad to expose List<T> ...
What is difference to the controller that gets the return with repect to rendering the List? In Linq dataContext: public IList<Response> GetResponses(int ID) { var responses = from r in this.Responses where r.ID == ID orderby r.Date select r; return responses.ToList(); } OR public List<Response> GetResponse...
I would like to call FindLast on a collection which implements IEnumarable, but FindLast is only available for List. What is the best solution? ...
I have a collection object that implements IList. Inside the collection I have used a List to collect the items. Inside the PropertyGrid (at runtime), it binds properly and the Collection Editor opens. I can edit, and I can add items properly and I can catch these methods when they are used in the collection class. However, if you try t...
Hi, My application is processing IList's. ILists of different user defined types. I'm thinking that i can use reflection to to see what type of object the IList contains and then create a new instance of that type and subsequently add that to the IList itself? So at any one time I might be processing IList<Customer> l; and I'd like ...
I have a the following dictionary: IDictionary<int, IList<MyClass>> myDictionary and I am wanting to get all the values in the dictionary as an IList.... Just to add a bit of a background as to how I've gotten into this situation.... I have a method that gets me a list of MyClass. I then have another method that converts that list...
I'm working on a problem in C# 2.0/.NET 2.0 where I have a Sortedlist and want to search all the "values" (not the "keys") of this SortedList for a certain substring and count up how many occurrences there are. This is what I'm trying to do: { Sortedlist<string,string> mySortedList; // some code that instantiates mySortedList and...
List<MyParentClass> parents = new List<MyParentClass>(); var parent1 = new MyParentClass("parent1"); var parent2 = new MyParentClass("parent2"); parents.Add(parent1); parents.Add(parent2); var child1 = new MyChildClass("child1"); parent1.children.Add(child1); var child2 = new MyChildClass("child2"); va...
The mstest framework has a CollectionAssert that accepts ICollections. My method returns an IList. Apparantly a list is not a collection.. Are there ways to make my IList an ICollection? ...
What is the most suitable container just for strings holding in some array with non-predetermined upper boundary, which length is unknown on it's creation. For simple code like: Foo list = new Foo(); // size in unknown for()/foreach()/do()/while() // any loop { list.Add(string); } Is it StringCollection as optimized Collection for ...
Hi Everyone, I would like to be able to print object properties, and I've hit a snag when I hit nested collections of the iLists. foreach (PropertyInformation p in properties) { //Ensure IList type, then perform recursive call if (p.PropertyType.IsGenericType) { ...
I've noticed when writing LINQ-y code that .ForEach() is a nice idiom to use. For example, here is a piece of code that takes the following inputs, and produces these outputs: { "One" } => "One" { "One", "Two" } => "One, Two" { "One", "Two", "Three", "Four" } => "One, Two, Three and Four"; And the code: private string InsertCommasAt...
Dim classCodeDetails As List(Of ClassCodeDetail) = db.ClassCodeHeaders.Single(Function(cch) cch.CLCH_ID = classCodeHeaderId ).ClassCodeDetails.ToList() classCodeDetails.Sort(Function(c1, c2) c1.Make.MAKE_English.CompareTo(c2.Make.MAKE_English) ) My question is how can I sort on multiple attributes? I want to...
I was doing some performance metrics and I ran into something that seems quite odd to me. I time the following two functions: private static void DoOne() { List<int> A = new List<int>(); for (int i = 0; i < 200; i++) A.Add(i); int s=0; for (int j = 0; j < 100000; j++) { f...
In a response to this question runefs suggested that "unless you have a very specific reason for using IList you should considere IEnumerable". Which do you use and why? ...