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Sample Activity - Setting an Activity's Status to Completed

更新日期: 2010年12月

適用於: System Center Service Manager 2010

The following is a sample activity that sets an activity’s status to complete.

using System;
using System.Linq;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Workflow.Runtime;
using System.Collections.Generic;
using System.Workflow.Activities;
using System.ComponentModel.Design;
using Microsoft.EnterpriseManagement;
using System.Workflow.ComponentModel;
using System.Workflow.Activities.Rules;
using System.Workflow.ComponentModel.Design;
using Microsoft.EnterpriseManagement.Common;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel.Serialization;
using Microsoft.EnterpriseManagement.Configuration;
using Microsoft.EnterpriseManagement.Configuration.IO;
using Microsoft.EnterpriseManagement.Workflow.Common;

namespace Microsoft.ServiceManager.WorkflowAuthoring.ActivityLibrary
{
    // --------------------------------------------------------------------------------
    /// <summary>
    /// Activity to set an activity's status to complete
    /// </summary>
    // --------------------------------------------------------------------------------
    [ToolboxItem(typeof(ActivityToolboxItem))]
    [ActivityValidator(typeof(Validators.SetActivityStatusToCompletedValidator))]
    [Designer(typeof(WorkflowActivityBaseDesigner))]
    public sealed partial class SetActivityStatusToCompleted : WorkflowActivityBase
    {
        // --------------------------------------------------------------------------------
        /// <summary>
        /// Dependency Property for ActivityId property
        /// </summary>
        // --------------------------------------------------------------------------------
        public static DependencyProperty ActivityIdProperty = 
            DependencyProperty.Register("ActivityId", typeof(String), typeof(SetActivityStatusToCompleted));

        // --------------------------------------------------------------------------------
        /// <summary>
        /// Activity ID
        /// </summary>
        // --------------------------------------------------------------------------------
        [Browsable(true)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
        public string ActivityId
        {
            get
            {
                return (string)this.GetValue(ActivityIdProperty);
            }
            set
            {
                this.SetValue(ActivityIdProperty, value);
            }
        }

        // --------------------------------------------------------------------------------
        /// <summary>
        /// The execute method will have the implementation to set the activity status to complete.
        /// </summary>
        // --------------------------------------------------------------------------------
        protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)
        {
            try
            {
                // Initialize the current item if the activity contained within the For-Each loop
                base.Execute(executionContext);

                // Validate Parameters
                if (String.IsNullOrEmpty(ActivityId))
                {
                    throw new ArgumentNullException("ActivityId");
                }
                
                string SMServer = "localhost";                

                Guid TaskGuid = new Guid(ActivityId);
                EnterpriseManagementGroup _mg = new EnterpriseManagementGroup(SMServer);

                EnterpriseManagementObject Activity = _mg.EntityObjects.GetObject
                    <EnterpriseManagementObject>(TaskGuid, ObjectQueryOptions.Default);

                ManagementPack SystemMP = _mg.ManagementPacks.GetManagementPack(
                    SystemManagementPack.System);
                ManagementPack ActivityMP = _mg.ManagementPacks.GetManagementPack(
                    Resources.ActivityManagementMP, SystemMP.KeyToken, SystemMP.Version);

                ManagementPackClass activityClass = _mg.EntityTypes.GetClass(
                    Resources.WorkItemActivityClass, ActivityMP);
                
                ManagementPackProperty status = activityClass.PropertyCollection["Status"];
                ManagementPackEnumeration Completed = 
                    _mg.EntityTypes.GetEnumeration("ActivityStatusEnum.Completed", ActivityMP);
                
                Activity[status].Value = Completed;
                Activity.Commit();
            }
            catch (ArgumentNullException argNullException)
            {
                // Log to Tracking Service
                TrackData(argNullException.ToString());

                throw;
            }
            catch (EnterpriseManagementException mgmtException)
            {
                TrackData(mgmtException.ToString());
                throw;
            }

            return ActivityExecutionStatus.Closed;
        }
    }
}
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