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CollectionsUtil.CreateCaseInsensitiveHashtable Method (IDictionary)

Copies the entries from the specified dictionary to a new case-insensitive instance of the Hashtable class with the same initial capacity as the number of entries copied.

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

public static Hashtable CreateCaseInsensitiveHashtable(
	IDictionary d


Type: System.Collections.IDictionary
The IDictionary to copy to a new case-insensitive Hashtable.

Return Value

Type: System.Collections.Hashtable
A new case-insensitive instance of the Hashtable class containing the entries from the specified IDictionary.


d is null.

Instead of using the CreateCaseInsensitiveHashtable method, use the Hashtable.Hashtable(IDictionary, IEqualityComparer) constructor to create a case-insensitive Hashtable class.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.