58 lines
1.8 KiB
C#
58 lines
1.8 KiB
C#
// ==++==
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// ==--==
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/*============================================================
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**
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** Class: CaseInsensitiveHashCodeProvider
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**
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**
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** Purpose: Designed to support hashtables which require
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** case-insensitive behavior while still maintaining case,
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** this provides an efficient mechanism for getting the
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** hashcode of the string ignoring case.
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**
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** Date: February 13, 2000
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**
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============================================================*/
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namespace System.Collections {
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using System;
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using System.Collections;
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using System.Globalization;
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//| <include path='docs/doc[@for="CaseInsensitiveHashCodeProvider"]/*' />
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public class CaseInsensitiveHashCodeProvider : IHashCodeProvider {
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public static readonly CaseInsensitiveHashCodeProvider Default
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= new CaseInsensitiveHashCodeProvider();
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//| <include path='docs/doc[@for="CaseInsensitiveHashCodeProvider.CaseInsensitiveHashCodeProvider"]/*' />
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public CaseInsensitiveHashCodeProvider() {
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}
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//| <include path='docs/doc[@for="CaseInsensitiveHashCodeProvider.DefaultInvariant"]/*' />
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public static CaseInsensitiveHashCodeProvider DefaultInvariant
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{
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get
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{
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return Default;
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}
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}
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//| <include path='docs/doc[@for="CaseInsensitiveHashCodeProvider.GetHashCode"]/*' />
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public int GetHashCode(Object obj) {
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if (obj==null) {
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throw new ArgumentNullException("obj");
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}
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String s = obj as String;
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if (s==null) {
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return obj.GetHashCode();
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}
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return TextInfo.GetCaseInsensitiveHashCode(s);
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}
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}
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}
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