IList To Read Only Collection - CSharp System.Collections.Generic

CSharp examples for System.Collections.Generic:IList

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Description

IList To Read Only Collection

Demo Code

/* ****************************************************************************
 *
 * Copyright (c) Microsoft Corporation. 
 *
 * This source code is subject to terms and conditions of the Microsoft Public License. A 
 * copy of the license can be found in the License.html file at the root of this distribution. If 
 * you cannot locate the  Microsoft Public License, please send an email to 
 * dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound 
 * by the terms of the Microsoft Public License.
 *
 * You must not remove this notice, or any other, from this software.
 *
 *
 * ***************************************************************************/
using System.Collections.ObjectModel;
using System.Collections.Generic;
using System.Collections;
using System;/*from www  . ja va  2s .  c  o m*/

public class Main{
        public static ReadOnlyCollection<T> ToReadOnlyCollection<T>(IList<T> list) {
            ReadOnlyCollection<T> roc;
            if (list == null) {
                return null;
            } else if ((roc = list as ReadOnlyCollection<T>) != null) {
                return roc;
            } else {
                return new ReadOnlyCollection<T>(list);
            }
        }
}

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