How do I add something to IEnumerable?
What you can do is use the Add extension method to create a new IEnumerable with the added value. var items = new string[]{“foo”}; var temp = items; items = items. Add(“bar”);
How do I return a class object as IEnumerable in C#?
4 Answers
- Create an instance of a collection class, like an array or a list. This would be mutable by default, which would be slightly unhelpful if this is a sequence you want to be able to hand out in your API.
- Write your own iterator block as per Botz3000’s answer.
- Use Enumerable.
What is IEnumerable <> in C#?
IEnumerable is an interface defining a single method GetEnumerator() that returns an IEnumerator interface. It is the base interface for all non-generic collections that can be enumerated. This works for read-only access to a collection that implements that IEnumerable can be used with a foreach statement.
How use IEnumerable method in C#?
IEnumerable in C# is an interface that defines one method, GetEnumerator which returns an IEnumerator interface. This allows readonly access to a collection then a collection that implements IEnumerable can be used with a for-each statement.
What is IEnumerable object in C#?
What is IEnumerable <>?
What is an IEnumerable object?
What is IEnumerable in C# with example?
What is C# IEnumerable?
How to add an item to an IEnumerable?
IEnumerable is immutable collection, it means you cannot add, or remove item. Instead, you have to create a new collection for this, simply to convert to list to add: Show activity on this post. But you need to be more careful with your terminology. You can’t add an item to an IEnumerable .
How do you capitalize IEnumerable objects?
The preferred style in C# is to use PascalCase or camelCase for capitalization. Use LINQ-to-object’s Concat to build a new IEnumerable that iterates the first one and then the second one: If you’ve called ToList () on an IEnumerable , the return type will be a List .
What is the use of IEnumerable in LINQ?
IEnumerable is meant for querying collections only. It is the backbone for the LINQ framework. It is always an abstraction of some other collection such as Collection , List , or Array.
What is the difference between IEnumerable and IList?
Otherwise you can use IList (or List) if you want to change the collection. I use IEnumerable only for methods params when I need to read and IList (or List) when I need to change items in it.