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Count the number of items in an IEnumerable<T> collection. If
a more specific collection type is being used, it is more efficient to use
the Count property, if one is provided.
Namespace: Wintellect.PowerCollections
Assembly:
PowerCollections (in PowerCollections.dll)
Syntax
| C# |
|---|
public static int Count<T>( IEnumerable<T> collection ) |
| Visual Basic (Declaration) |
|---|
Public Shared Function Count(Of T) ( _ collection As IEnumerable(Of T) _ ) As Integer |
| Visual C++ |
|---|
public: generic<typename T> static int Count ( IEnumerable<T>^ collection ) |
Parameters
- collection
- IEnumerable<(Of <T>)>
The collection to count items in.
Return Value
The number of items in the collection.Type Parameters
- T
Remarks
If the collection implements ICollection<T>, this method
simply returns ICollection<T>.Count. Otherwise, it enumerates all items
and counts them.
Exceptions
| Exception | Condition |
|---|---|
| System..::ArgumentNullException | collection is null. |
See Also
Algorithms Class
Wintellect.PowerCollections Namespace
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