EmptyCollection.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ FXUpdate3074 / FXUpdate3074 / 1.1 / DEVDIV / depot / DevDiv / releases / whidbey / QFE / ndp / fx / src / xsp / System / Web / Util / EmptyCollection.cs / 1 / EmptyCollection.cs

                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

/* 
 * EmptyCollection class 
 *
 * Copyright (c) 1999 Microsoft Corporation 
 */

namespace System.Web.Util {
 
using System.Collections;
 
/* 
 * Fast implementation of an empty collection
 */ 
internal class EmptyCollection: ICollection, IEnumerator {

    private static EmptyCollection s_theEmptyCollection = new EmptyCollection();
 
    private EmptyCollection() { }
 
    // Return the same instance all the time, since it's immutable 
    internal static EmptyCollection Instance { get { return s_theEmptyCollection; } }
 
    // ICollection implementation
    IEnumerator IEnumerable.GetEnumerator() { return this; }
    public int Count { get { return 0; } }
    bool ICollection.IsSynchronized { get { return true; } } 
    object ICollection.SyncRoot { get { return this; } }
    public void CopyTo(Array array, int index) { } 
 
    // IEnumerator implementation
    object IEnumerator.Current { get { return null; } } 
    bool IEnumerator.MoveNext() { return false; }
    void IEnumerator.Reset() { }
}
 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

/* 
 * EmptyCollection class 
 *
 * Copyright (c) 1999 Microsoft Corporation 
 */

namespace System.Web.Util {
 
using System.Collections;
 
/* 
 * Fast implementation of an empty collection
 */ 
internal class EmptyCollection: ICollection, IEnumerator {

    private static EmptyCollection s_theEmptyCollection = new EmptyCollection();
 
    private EmptyCollection() { }
 
    // Return the same instance all the time, since it's immutable 
    internal static EmptyCollection Instance { get { return s_theEmptyCollection; } }
 
    // ICollection implementation
    IEnumerator IEnumerable.GetEnumerator() { return this; }
    public int Count { get { return 0; } }
    bool ICollection.IsSynchronized { get { return true; } } 
    object ICollection.SyncRoot { get { return this; } }
    public void CopyTo(Array array, int index) { } 
 
    // IEnumerator implementation
    object IEnumerator.Current { get { return null; } } 
    bool IEnumerator.MoveNext() { return false; }
    void IEnumerator.Reset() { }
}
 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
                        

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