ContextActivityUtils.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 / WF / RunTime / ContextActivityUtils.cs / 1305376 / ContextActivityUtils.cs
                        

                        
                            #pragma warning disable 1634, 1691 
using System;
using System.Globalization;
using System.Collections;
using System.Collections.Generic; 
using System.Collections.Specialized;
using System.Collections.ObjectModel; 
using System.ComponentModel.Design.Serialization; 
using System.Diagnostics;
using System.IO; 
using System.Reflection;
using System.Text;
using System.Threading;
using System.Xml; 
using System.Transactions;
using SES = System.EnterpriseServices; 
using System.Workflow.ComponentModel; 
using System.Workflow.Runtime.Hosting;
 
namespace System.Workflow.Runtime
{
    #region ContextActivityUtils Class
 
    internal static class ContextActivityUtils
    { 
        internal static int ContextId(Activity activity) 
        {
            return ((ActivityExecutionContextInfo)ContextActivity(activity).GetValue(Activity.ActivityExecutionContextInfoProperty)).ContextId; 
        }

        internal static Activity ContextActivity(Activity activity)
        { 
            Activity contextActivity = activity;
            while (contextActivity != null && contextActivity.GetValue(Activity.ActivityExecutionContextInfoProperty) == null) 
                contextActivity = contextActivity.Parent; 
            return contextActivity;
        } 
        internal static Activity ParentContextActivity(Activity activity)
        {
            Activity contextActivity = ContextActivity(activity);
            ActivityExecutionContextInfo executionContextInfo = (ActivityExecutionContextInfo)contextActivity.GetValue(Activity.ActivityExecutionContextInfoProperty); 
            if (executionContextInfo.ParentContextId == -1)
                return null; 
 
            return RetrieveWorkflowExecutor(activity).GetContextActivityForId(executionContextInfo.ParentContextId);
        } 
        internal static IWorkflowCoreRuntime RetrieveWorkflowExecutor(Activity activity)
        {
            // fetch workflow executor
            IWorkflowCoreRuntime workflowExecutor = null; 
            Activity rootActivity = activity;
            while (rootActivity != null && rootActivity.Parent != null) 
                rootActivity = rootActivity.Parent; 
            if (rootActivity != null)
                workflowExecutor = (IWorkflowCoreRuntime)rootActivity.GetValue(WorkflowExecutor.WorkflowExecutorProperty); 

            return workflowExecutor;
        }
        internal static Activity RootContextActivity(Activity activity) 
        {
            return RetrieveWorkflowExecutor(activity).RootActivity; 
        } 
    }
    #endregion 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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