48 lines
1.4 KiB
C#
48 lines
1.4 KiB
C#
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//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.Activities.Statements
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{
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using System;
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using System.Activities;
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using System.Collections.Generic;
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public sealed class Persist : NativeActivity
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{
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static BookmarkCallback onPersistCompleteCallback;
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protected override void CacheMetadata(NativeActivityMetadata metadata)
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{
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}
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protected override bool CanInduceIdle
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{
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get
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{
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return true;
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}
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}
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protected override void Execute(NativeActivityContext context)
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{
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if (context.IsInNoPersistScope)
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{
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throw FxTrace.Exception.AsError(new InvalidOperationException(SR.CannotPersistInsideNoPersist));
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}
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if (onPersistCompleteCallback == null)
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{
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onPersistCompleteCallback = new BookmarkCallback(OnPersistComplete);
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}
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context.RequestPersist(onPersistCompleteCallback);
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}
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static void OnPersistComplete(NativeActivityContext context, Bookmark bookmark, object value)
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{
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// No-op. This is here to keep the activity from completing.
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}
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}
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}
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