NameObjectCollectionBase.NameObjectCollectionBase(Int32, IEqualityComparer) Constructor

Initializes a new instance of the NameObjectCollectionBase class that is empty, has the specified initial capacity, and uses the specified IEqualityComparer object.

Namespace: System.Collections.Specialized
Assembly: System (in system.dll)

protected NameObjectCollectionBase (
	int capacity,
	IEqualityComparer equalityComparer
protected NameObjectCollectionBase (
	int capacity, 
	IEqualityComparer equalityComparer
protected function NameObjectCollectionBase (
	capacity : int, 
	equalityComparer : IEqualityComparer
Not applicable.



The approximate number of entries that the NameObjectCollectionBase object can initially contain.


The IEqualityComparer object to use to determine whether two keys are equal and to generate hash codes for the keys in the collection.

Exception typeCondition


capacity is less than zero.

The capacity of a NameObjectCollectionBase object is the number of elements that the NameObjectCollectionBase can hold. As elements are added to a NameObjectCollectionBase, the capacity is automatically increased as required by reallocating the internal array.

If the size of the collection can be estimated, specifying the initial capacity eliminates the need to perform a number of resizing operations while adding elements to the NameObjectCollectionBase.

The IEqualityComparer object combines the comparer and the hash code provider. The hash code provider dispenses hash codes for keys in the NameObjectCollectionBase. The comparer determines whether two keys are equal.

This constructor is an O(n) operation, where n is the capacity parameter.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0