SequentialUshortCollection.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Shared / MS / Internal / SequentialUshortCollection.cs / 1305600 / SequentialUshortCollection.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
// 
// Description: A class that implements ICollection for a sequence of numbers [0..n-1].
// 
// 
// History:
//  03/21/2005 : MLeonov - Created it. 
//
//---------------------------------------------------------------------------

using System; 
using System.Windows;
using System.Collections; 
using System.Collections.Generic; 
using System.Diagnostics;
using System.Text; 
using System.Runtime.InteropServices;

using SR=MS.Internal.PresentationCore.SR;
using SRID=MS.Internal.PresentationCore.SRID; 

namespace MS.Internal 
{ 
    internal class SequentialUshortCollection : ICollection
    { 
        public SequentialUshortCollection(ushort count)
        {
            _count = count;
        } 

        #region ICollection Members 
 
        public void Add(ushort item)
        { 
            throw new NotSupportedException();
        }

        public void Clear() 
        {
            throw new NotSupportedException(); 
        } 

        public bool Contains(ushort item) 
        {
            return item < _count;
        }
 
        public void CopyTo(ushort[] array, int arrayIndex)
        { 
            if (array == null) 
            {
                throw new ArgumentNullException("array"); 
            }

            if (array.Rank != 1)
            { 
                throw new ArgumentException(SR.Get(SRID.Collection_BadRank));
            } 
 
            // The extra "arrayIndex >= array.Length" check in because even if _collection.Count
            // is 0 the index is not allowed to be equal or greater than the length 
            // (from the MSDN ICollection docs)
            if (arrayIndex < 0 || arrayIndex >= array.Length || (arrayIndex + Count) > array.Length)
            {
                throw new ArgumentOutOfRangeException("arrayIndex"); 
            }
 
            for (ushort i = 0; i < _count; ++i) 
                array[arrayIndex + i] = i;
        } 

        public int Count
        {
            get { return _count; } 
        }
 
        public bool IsReadOnly 
        {
            get { return true; } 
        }

        public bool Remove(ushort item)
        { 
            throw new NotSupportedException();
        } 
 
        #endregion
 
        #region IEnumerable Members

        public IEnumerator GetEnumerator()
        { 
            for (ushort i = 0; i < _count; ++i)
                yield return i; 
        } 

        #endregion 

        #region IEnumerable Members

        IEnumerator IEnumerable.GetEnumerator() 
        {
            return ((IEnumerable)this).GetEnumerator(); 
        } 

        #endregion 

        private ushort _count;
    }
} 


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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