深入浅出SharePoint——取消Workflow实例

取消正在执行的Workflow instance。以下代码以properties来自EventReceiver中的上下文。

SPSecurity.RunWithElevatedPrivileges(delegate()   
{   
using (SPSite site = new SPSite(properties.SiteId))   
    {   
using (SPWeb web = site.OpenWeb(properties.RelativeWebUrl))   
        {   
            SPWorkflowManager manager = site.WorkflowManager;   
            SPListItem item = web.Lists[properties.ListTitle].GetItemById(properties.ListItemId);   
foreach (SPWorkflow workflow in manager.GetItemActiveWorkflows(item))  
             {  
 foreach (SPWorkflowTask t in workflow.Tasks)  
                 {  
                     t["Status"] = "Canceled";  
                     t.Update();  
                 }  
                 SPWorkflowManager.CancelWorkflow(workflow);  
             }  
         }  
     }  
});