I have the following method: object GetIndexer() The result of the method is an indexer of the type: SomeCollection<T> Now T can be anything, by I know that each T extends the type Y. I tried casting SomeCollection<Y> result= (SomeCollection<Y>) GetIndexer() It didn't work. What I need to know is how to access a property for ...
Given an instance of the class ThisClassShouldBeTheDataContext as the Datacontext for the view class ThisClassShouldBeTheDataContext { public Contacts Contacts {get;set;} } class Contacts { public IEnumerable<Person> Persons {get;set;} public Person this[string Name] { get { var p = from i in Persons where i.Name...
I have this code: public enum StateId { NotSet = 0, AL, ..., WY } public class EnumBasedArray<I,V>:IEnumerable<V> { public V this[I index] { get { return _data[index]; } set { _data[index] = value; } } // other code to manage values internally } public class AnotherObject { ... } public class ArrayOfAnotherObjectByS...
Is an indexer an extended version of a property?. ...
Doing some code reading and stumbled upon this snippet that I haven't seen before: public SomeClass { public someInterface this[String strParameter] { get { return SomeInternalMethod(strParameter); } } } It looks like it is called as follows: SomeClass _someClass = new SomeClass(); SomeInterface returnedValue = _som...
I have a parent class which is essentially a glorified list. It's extended by several subclasses for various functionalities. public class HierarchialItemList<ItemType> : IEnumerable<ItemType> { public ItemType this[String itemCode] { get { foreach (IHierarchialItem curItem in...
I've seen lot of examples for c# Indexers, but in what way will it help me in real life situations. I know the C# guru wouldn't have added this if it wasn't a serious feature, but i cant think of a real world situation (not the foo bar stuff) to use indexers. Note:I realize a related question exists, but it doesn't help me much. Thank...
I'm trying to write a method that acts as a setter and takes some extra arguments besides the assigned value. Silly example: class WordGenerator def []=(letter, position, allowed) puts "#{letter}#{allowed ? ' now' : ' no longer'} allowed at #{position}" end def allow=(letter, position, allowed) # ... end end Writing i...
Hi - i am building a search index that contains special names - containing ! and ? and & and + and ... I have to tread the following searches different: me & you me + you But whatever i do (did try with queryparser escaping before indexing, escaped it manually, tried different indexers...) - if i check the search index with Luke they ...
If I had a CarsDataStore representing a table something like: Cars -------------- Ford | Fiesta Ford | Escort Ford | Orion Fiat | Uno Fiat | Panda Then I could do IEnumerable<Cars> fords = CarsDataStore["Ford"]; Is this a bad idea? It's inconsistent with the other datastore objects in my api (which all have a single column PK index...
class UserDatastore : IUserDatastore { ... public IUser this[Guid userId] { get { User user = (from u in _dataContext.Users where u.Id == userId select u).FirstOrDefault(); return user; } } ... } One of the d...
I'm having trouble figuring out how to set indexers in C# with Moq. The Moq documentation is weak, and I've done a lot of searching... what I'd like to do is similar in the solution to How to Moq Setting an Indexed property: var someClass = new Mock<ISomeClass>(); someClass.SetupSet(o => o.SomeIndexedProperty[3] = 25); I want to modif...
I have done a program string[] arrExposureValues = stock.ExposureCollection[dt].Values.ToArray(); for(int i = 0; i < arrExposureValues.Length; i++) Console.WriteLine(arrExposureValues[i]); Nothing wrong and works fine. But is it possible to do something like the below for(int i = 0; i < stock.ExposureCollection[dt].Count; i++)...
I would like to build a generic class that I can use to implement Parameterized Properties in C#. The basic code I want is this: public class ParameterizedProperty<typeReturn, typeIndexer> { private typeReturn oReturn = default(typeReturn); public typeReturn this[typeIndexer oIndexer] { get { return oReturn[oIndexer]; }...
Is it possible to use indexers with extension methods. eg. Consider it as an example only. public static object SelectedValue(this DataGridView dgv, string ColumnName) { return dgv.SelectedRows[0].Cells[ColumnName].Value; } EDIT usage mygrid.SelectedValue("mycol") How to use it as an indexer mygrid....
I have a Listbox with an itemssource set to an ObservableCollection of DataRow. Let's say each DataRow has 5 columns for this example. In the DataTemplate of the ListBox I have 5 textblocks (1 for each column). My question is how can I bind to an indexer of the row to get the columns value? Here is my attempt but nothing displays so I ...
I have looked over the MSDN site and I haven't been able to find C# indexer's documentation of a specific class For instance, I want to find HttpRequest's public string this[string key] documentation Where can i find it? ...
public class MyClass<T> { public T this[int index] { get { ... } set { ... } } public void MyMethod<T>() { int middleIndex = ...; T value = this[middle...
I tried to do something like this but this doesn't work: class Garage { private List<Car> cars = new List<Car>(); public Car this[int i] { get { return cars[i]; } } //... } Garage g = new Garage(); //get CS1579 - no GetEnumerator definition foreach ...