.NET Framework 4.6 and 4.5
Sets the capacity to the actual number of elements in the Queue.
Public Overridable Sub TrimToSize
This method can be used to minimize a queue's memory overhead if no new elements will be added to the queue.
To reset a Queue to its initial state, call the Clear method before calling TrimToSize. Trimming an empty Queue sets the capacity of the Queue to the default capacity.
This method is an O(n) operation, where n is Count.
Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
.NET Framework Client Profile
Supported in: 4, 3.5 SP1
Supported in: 3.0, 2.0, 1.0