BlockingCollection<T>.TryAdd Method (T)

.NET Framework (current version)

Tries to add the specified item to the BlockingCollection<T>.

Namespace:   System.Collections.Concurrent
Assembly:  System (in System.dll)

public bool TryAdd(
	T item


Type: T

The item to be added to the collection.

Return Value

Type: System.Boolean

true if item could be added; otherwise false. If the item is a duplicate, and the underlying collection does not accept duplicate items, then an InvalidOperationException is thrown.

Exception Condition

The BlockingCollection<T> has been disposed.


The BlockingCollection<T> has been marked as complete with regards to additions.


The underlying collection didn't accept the item.

If the collection is a bounded collection, and is full, this method immediately returns false without adding the item.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
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