Visual Studio 2010/SharePoint 2010工作流程錯誤

我在VS 2010中創建了一個簡單的工作流程。它爲人員創建任務，當人員將任務狀態更改爲「完成」時，它將消息記錄到工作流程歷史。Visual Studio 2010/SharePoint 2010工作流程錯誤

當我將狀態更改爲完成時，它會顯示：「xxxx（工作流名稱）發生錯誤」。

代碼：

using System; 
using System.ComponentModel; 
using System.ComponentModel.Design; 
using System.Collections; 
using System.Drawing; 
using System.Linq; 
using System.Workflow.ComponentModel.Compiler; 
using System.Workflow.ComponentModel.Serialization; 
using System.Workflow.ComponentModel; 
using System.Workflow.ComponentModel.Design; 
using System.Workflow.Runtime; 
using System.Workflow.Activities; 
using System.Workflow.Activities.Rules; 
using Microsoft.SharePoint; 
using Microsoft.SharePoint.Workflow; 
using Microsoft.SharePoint.WorkflowActions; 

namespace WorkflowProject2.Workflow1 
{ 
public sealed partial class Workflow1 : SequentialWorkflowActivity 
{ 
    public Workflow1() 
    { 
     InitializeComponent(); 
    } 

    public Guid workflowId = default(System.Guid); 
    public SPWorkflowActivationProperties workflowProperties = new SPWorkflowActivationProperties(); 

    private void onWorkflowActived(object sender, ExternalDataEventArgs e) 
    { 

    } 

    public Guid taskID = default(System.Guid); 
    public SPWorkflowTaskProperties taskProperties = new Microsoft.SharePoint.Workflow.SPWorkflowTaskProperties(); 
    private bool taskHasCompleted = false; 

    public SPWorkflowTaskProperties taskAfterProperties = new Microsoft.SharePoint.Workflow.SPWorkflowTaskProperties(); 
    public SPWorkflowTaskProperties taskBeforeProperties = new Microsoft.SharePoint.Workflow.SPWorkflowTaskProperties(); 
    public String taskOutcome = default(System.String); 
    public Guid TaskStatusFieldID = new Guid("c15b34c3-ce7d-490a-b133-3f4de8801b76"); 

    private void createTask1_MethodInvoking(object sender, EventArgs e) 
    { 

     taskID = Guid.NewGuid(); 
     taskProperties.AssignedTo = "spdev\\lzhang"; 
     taskProperties.Description = "Please review"; 
     taskProperties.Title = "Leave application"; 

    } 

    private void completeTask1_MethodInvoking(object sender, EventArgs e) 
    { 
     // Finalize the task: 
     taskAfterProperties.PercentComplete = 100; 
     taskOutcome = "Completed"; 
    } 

    private void notComplete(object sender, ConditionalEventArgs e) 
    { 
     e.Result = !taskHasCompleted; // **(A)** 
    } 
    private void onTaskChanged1_Invoked(object sender, ExternalDataEventArgs e) 
    { 
     string taskStatus = taskAfterProperties.ExtendedProperties[TaskStatusFieldID].ToString(); 

     if (taskStatus == "Completed") 
     { 
      taskHasCompleted = true;  // **(B)** 

     } 

    } 

} 
}

我有一種感覺，必須有一些問題（A）或（B），但我不知道如何解決它。我在14/LOGS文件夾的日誌文件中沒有發現任何錯誤...

我感謝任何幫助！謝謝！

來源

2012-11-21 Lin Zhang