NoPersistProperty.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 / NoPersistProperty.cs / 1305376 / NoPersistProperty.cs

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

namespace System.Activities 
{
    using System; 
    using System.Activities.Runtime; 
    using System.Runtime;
    using System.Runtime.Serialization; 

    // This does not need to be data contract since we'll never persist while one of these is active
    class NoPersistProperty : IPropertyRegistrationCallback
    { 
        public const string Name = "System.Activities.NoPersistProperty";
 
        ActivityExecutor executor; 
        int refCount;
 
        public NoPersistProperty(ActivityExecutor executor)
        {
            this.executor = executor;
        } 

        public void Enter() 
        { 
            this.refCount++;
            this.executor.EnterNoPersist(); 
        }

        public bool Exit()
        { 
            Fx.Assert(this.refCount > 0, "We should guard against too many exits elsewhere.");
 
            this.refCount--; 
            this.executor.ExitNoPersist();
 
            return this.refCount == 0;
        }

        public void Register(RegistrationContext context) 
        {
        } 
 
        public void Unregister(RegistrationContext context)
        { 
            if (this.refCount > 0)
            {
                for (int i = 0; i < this.refCount; i++)
                { 
                    this.executor.ExitNoPersist();
                } 
 
                this.refCount = 0;
            } 
        }
    }
}
 


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

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