SharePoint 2007：以编程方式启动工作流命中错误

Question

我想在页面库中添加项目时以编程方式启动工作流程。 我执行以下操作：

public override void ItemAdded(SPItemEventProperties properties)
{
    SPListItem listItem = properties.ListItem;

    StartWF(listItem);
}

public void StartWF(SPListItem listItem)
{
    using(SPWeb web = listItem.Web) {
        using(SPSite site = web.Site) {
            SPWorkflowManager manager = site.WorkflowManager;
            SPList parentList = listItem.ParentList;
            SPWorkflowAssociationCollection associationCollection =
                parentList.WorkflowAssociations;

            foreach(SPWorkflowAssociation association in
                associationCollection) {
                if (association.Name == "APWFAnn2010") {
                    string data =
                        association.AssociationData;
                    SPWorkflow wf =
                        manager.StartWorkflow(listItem,
                                  association,
                                  association.
                                  AssociationData);
                }
            }
        }
    }
}

然后我遇到此错误“系统找不到指定的文件。（HRESULT 异常：0x80070002）”

“APWFAnn2010”是我想要启动的工作流程名称。这是在页面库中创建的 SP 默认审批工作流程。

请帮忙，先谢谢你了。

Answer 1

您还可以通过这种方式将名称传递到上面的函数中，然后您将拥有一个可以在任何项目上启动任何工作流程的函数：

public void StartWF(SPListItem listItem, SPSite spSite, string wfName)  
{ 
   SPList parentList = listItem.ParentList;      
   SPWorkflowAssociationCollection associationCollection = parentList.WorkflowAssociations;        
   foreach (SPWorkflowAssociation association in associationCollection) 
   {
       if (association.Name == wfName) 
       {
           association.AutoStartChange = true;
           association.AutoStartCreate = false;
           association.AssociationData = string.Empty; 
           spSite.WorkflowManager.StartWorkflow(listItem, association,  association.AssociationData);
      }
   }
}

Answer 2

首先，您在 using web 中拥有您的 using site ，这应该是相反的 - 另一方面，我什至没有看到您使用 SPWeb，所以为什么里面有吗？其次，我会稍微重写一下代码：

public override void ItemAdded(SPItemEventProperties properties)
{
    SPListItem listItem = properties.ListItem;
    spSite = properties.OpenWeb().Site;
    spWeb = properties.Web;
    using(spSite) {
        StartWF(listItem, spSite);
    }
}

public void StartWF(SPListItem listItem, SPSite spSite)
{

    SPList parentList = listItem.ParentList;
    SPWorkflowAssociationCollection associationCollection =
        parentList.WorkflowAssociations;

    foreach(SPWorkflowAssociation association in associationCollection) {
        if (association.Name == "APWFAnn2010") {
            association.AutoStartChange = true;
            association.AutoStartCreate = false;
            association.AssociationData = string.Empty;

            spSite.WorkflowManager.StartWorkflow(listItem,
                                 association,
                                 association.AssociationData);
        }
    }
}