Persist.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 / Statements / Persist.cs / 1305376 / Persist.cs
                        

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

namespace System.Activities.Statements 
{
    using System; 
    using System.Activities; 
    using System.Collections.Generic;
 
    public sealed class Persist : NativeActivity
    {
        static BookmarkCallback onPersistCompleteCallback;
 
        protected override void CacheMetadata(NativeActivityMetadata metadata)
        { 
        } 

        protected override bool CanInduceIdle 
        {
            get
            {
                return true; 
            }
        } 
 
        protected override void Execute(NativeActivityContext context)
        { 
            if (context.IsInNoPersistScope)
            {
                throw FxTrace.Exception.AsError(new InvalidOperationException(SR.CannotPersistInsideNoPersist));
            } 

            if (onPersistCompleteCallback == null) 
            { 
                onPersistCompleteCallback = new BookmarkCallback(OnPersistComplete);
            } 

            context.RequestPersist(onPersistCompleteCallback);
        }
 
        static void OnPersistComplete(NativeActivityContext context, Bookmark bookmark, object value)
        { 
            // No-op.  This is here to keep the activity from completing. 
        }
    } 
}

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

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