ICollection<T> Interface
Represents a collection of objects of the specified generic type. This is the base interface for all generic collection types.
Namespace: System.Collections.Generic
Assembly: mscorlib.dll (or relevant assembly)
Remarks
The ICollection<T> interface is the base interface for collections that contain objects of a specified type. It defines methods and properties for manipulating the collection, such as adding, removing, copying, and checking for the presence of elements. It inherits from IEnumerable<T>, which allows you to iterate over the collection using a foreach loop.
Implementations of ICollection<T> should follow standard contract conventions, such as ensuring that the Count property always returns the correct number of elements, and that methods like Add and Remove behave as expected.
Methods
| Method | Description |
|---|---|
void Add(T item) |
Adds an item to the end of the ICollection<T>. |
void Clear() |
Removes all items from the ICollection<T>. |
bool Contains(T item) |
Determines whether the ICollection<T> contains a specific value. |
void CopyTo(T[] array, int arrayIndex) |
Copies the entire ICollection<T> to a compatible one-dimensional Array, starting at the specified index of the target array. |
bool Remove(T item) |
Removes the first occurrence of a specific object from the ICollection<T>. |
Properties
| Property | Description |
|---|---|
int Count { get; } |
Gets the number of elements contained in the ICollection<T>. |
bool IsReadOnly { get; } |
Gets a value indicating whether the ICollection<T> is read-only. |
See Also
Assembly Information
This interface is typically found in the following assemblies:
mscorlib.dll(for .NET Framework)System.Runtime.dll(for .NET Core / .NET 5+)