Question

我使用非常方便的 STSDEV tool 生成了 C＃SharePoint Sequential Workflow 项目（这让我满足了访问32位的要求其他工具（如VSeWSS 1.3）所需的SharePoint安装。

我添加了一个简单的“修改标题”操作来测试我的基本设置：

public sealed partial class CopyWorkflow : SharePointSequentialWorkflowActivity
{

    public CopyWorkflow()
    {
        InitializeComponent();
        workflowProperties = new SPWorkflowActivationProperties();
    }

    public SPWorkflowActivationProperties workflowProperties;

    private void onWorkflowActivated1_Invoked_1(object sender, ExternalDataEventArgs e)
    {
        workflowProperties.Item["Title"] = workflowProperties.Item["Title"].ToString() + ": Processed by Workflow";
        workflowProperties.Item.Update();
    }
}

无论是谁，通过WSP安装我的工作流程到 WSS 3.0 的安装，激活该功能，并配置工作流程以便在为特定列表创建新项目时启动，我得到我的断点在onWorkflowActivated1_Invoked_1中，但 workflowProperties.Item始终为NULL，而不是表示刚刚添加的项的SPListItem 。

在调用此回调时，我需要做什么才能填充项目？

更新：我注意到执行工作流程的线程是匿名运行而不是登录用户或系统用户，因此无法访问列表数据。此外，SharePoint日志文件显示以下异常：

Unexpected System.ArgumentNullException: Value cannot be null. Parameter name: uriString at System.Uri..ctor(String uriString) at Microsoft.SharePoint.SPSite..ctor(String requestUrl) at Microsoft.SharePoint.Workflow.SPWorkflowActivationProperties.<get_Site>b__0() at Microsoft.SharePoint.SPSecurity.CodeToRunElevatedWrapper(Object state) at Microsoft.SharePoint.SPSecurity.<>c__DisplayClass4.<RunWithElevatedPrivileges>b__2() at Microsoft.SharePoint.Utilities.SecurityContext.RunAsProcess(CodeToRunElevated secureCode) at Microsoft.SharePoint.SPSecurity.RunWithElevatedPrivileges(WaitCallback secureCode, Object param) at Microsoft.SharePoint.SPSecurity.RunWithElevatedPrivileges(CodeToRunElevated secureCode) at Microsoft.SharePoint.Workflow.SPWorkflowActivationProperties....

和

Unexpected ...get_Site() at Microsoft.SharePoint.Workflow.SPWorkflowActivationProperties.get_Web() at Microsoft.SharePoint.Workflow.SPWorkflowActivationProperties.get_Item() at BechtelWorkflow.CopyWorkflow.onWorkflowActivated1_Invoked_1(Object sender, ExternalDataEventArgs e) at System.Workflow.ComponentModel.Activity.RaiseGenericEvent[T](DependencyProperty dependencyEvent, Object sender, T e) at System.Workflow.Activities.HandleExternalEventActivity.RaiseEvent(Object[] args) at System.Workflow.Activities.HandleExternalEventActivity.Execute(ActivityExecutionContext executionContext) at System.Workflow.ComponentModel.ActivityExecutor'1.Execute(T activity, ActivityExecutionContext executionContext) at System.Workflow.ComponentModel.ActivityExecutor'1.Execute(Activity activi...

Answer 1

您是否已将WorkflowActivationProperties与Workflow designer绑定？

WorkflowActivationProperties http://img718.imageshack.us/img718/9703/ss20100305091353.png

Answer 2

如果工作流属性中的设计器的InitialStateName不等于“初始状态”或突然指向其他阶段，则会出现此问题。一旦我们拥有了像上面图像那样的workflowProperties等的状态。事情开始按要求运作。

简单SharePoint工作流中的SPWorkflowActivationProperties.Item为NULL

2 个答案: