IdSpace.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 / ndp / cdf / src / NetFx40 / System.Activities / System / Activities / IdSpace.cs / 1305376 / IdSpace.cs

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

namespace System.Activities 
{
    using System; 
    using System.Collections.Generic; 
    using System.Runtime;
 
    class IdSpace
    {
        int lastId;
        IList members; 

        public IdSpace() 
        { 
        }
 
        public IdSpace(IdSpace parent, int parentId)
        {
            this.Parent = parent;
            this.ParentId = parentId; 
        }
 
        public IdSpace Parent 
        {
            get; 
            private set;
        }

        public int ParentId 
        {
            get; 
            private set; 
        }
 
        public int MemberCount
        {
            get
            { 
                if (this.members == null)
                { 
                    return 0; 
                }
                else 
                {
                    return this.members.Count;
                }
            } 
        }
 
        public Activity Owner 
        {
            get 
            {
                if (this.Parent != null)
                {
                    return this.Parent[this.ParentId]; 
                }
 
                return null; 
            }
        } 

        public Activity this[int id]
        {
            get 
            {
                int lookupId = id - 1; 
                if (this.members == null || lookupId < 0 || lookupId >= this.members.Count) 
                {
                    return null; 
                }
                else
                {
                    return this.members[lookupId]; 
                }
            } 
        } 

        public void AddMember(Activity element) 
        {
            if (this.members == null)
            {
                this.members = new List(); 
            }
 
            if (lastId == int.MaxValue) 
            {
                throw FxTrace.Exception.AsError(new NotSupportedException(SR.OutOfIdSpaceIds)); 
            }

            lastId++;
 
            // ID info is cleared inside InternalId.
            element.InternalId = lastId; 
            Fx.Assert(element.MemberOf == this, "We should have already set this."); 
            Fx.Assert(this.members.Count == element.InternalId - 1, "We should always be adding the next element");
 
            this.members.Add(element);
        }

        public void Dispose() 
        {
            if (this.members != null) 
            { 
                this.members.Clear();
            } 

            this.lastId = 0;
            this.Parent = null;
            this.ParentId = 0; 
        }
    } 
} 

 

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

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