AsyncCodeActivityContext.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 / AsyncCodeActivityContext.cs / 1305376 / AsyncCodeActivityContext.cs
                        

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

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

    [Fx.Tag.XamlVisible(false)] 
    public sealed class AsyncCodeActivityContext : CodeActivityContext
    {
        AsyncOperationContext asyncContext;
 
        internal AsyncCodeActivityContext(AsyncOperationContext asyncContext, ActivityInstance instance, ActivityExecutor executor)
            : base(instance, executor) 
        { 
            this.asyncContext = asyncContext;
        } 

        public bool IsCancellationRequested
        {
            get 
            {
                ThrowIfDisposed(); 
                return this.CurrentInstance.IsCancellationRequested; 
            }
        } 

        public object UserState
        {
            get 
            {
                ThrowIfDisposed(); 
                return this.asyncContext.UserState; 
            }
            set 
            {
                ThrowIfDisposed();
                this.asyncContext.UserState = value;
            } 
        }
 
        public void MarkCanceled() 
        {
            ThrowIfDisposed(); 

            // This is valid to be called while aborting or while canceling
            if (!this.CurrentInstance.IsCancellationRequested && !this.asyncContext.IsAborting)
            { 
                throw FxTrace.Exception.AsError(new InvalidOperationException(SR.MarkCanceledOnlyCallableIfCancelRequested));
            } 
 
            this.CurrentInstance.MarkCanceled();
        } 
    }
}

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

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