FreezableCollection.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / NetFx35 / System.ServiceModel.Web / System / Collections / ObjectModel / FreezableCollection.cs / 2 / FreezableCollection.cs
                        

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

namespace System.Collections.ObjectModel 
{
    using System; 
    using System.Collections.Generic; 
    using System.ServiceModel;
 
    class FreezableCollection : Collection, ICollection
    {
        bool frozen;
 
        public FreezableCollection()
            : base() 
        { 
        }
 
        public FreezableCollection(IList list)
            : base(list)
        {
        } 

        public bool IsFrozen 
        { 
            get
            { 
                return this.frozen;
            }
        }
 
        bool ICollection.IsReadOnly
        { 
            get 
            {
                return this.frozen; 
            }
        }

        public void Freeze() 
        {
            this.frozen = true; 
        } 

        protected override void ClearItems() 
        {
            ThrowIfFrozen();
            base.ClearItems();
        } 

        protected override void InsertItem(int index, T item) 
        { 
            ThrowIfFrozen();
            base.InsertItem(index, item); 
        }

        protected override void RemoveItem(int index)
        { 
            ThrowIfFrozen();
            base.RemoveItem(index); 
        } 

        protected override void SetItem(int index, T item) 
        {
            ThrowIfFrozen();
            base.SetItem(index, item);
        } 

        void ThrowIfFrozen() 
        { 
            if (this.frozen)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.ObjectIsReadOnly));
            }
        }
    } 
}

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

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