使用SharePoint Web服务/对象模型批准SharePoint工作流任务

Question

我创建的工作流是SharePoint Designer,并将其与列表相关联.工作流创建批准过程,因此SharePoint在"任务"列表中创建任务,以便用户可以批准或拒绝.

我需要做的是在不打开任务列表中的任务的情况下批准或拒绝任务.经过一些研究后,我发现我可以使用SharePoint Web Services.但是我感到迷茫,因为我不知道哪个服务,例如Lists.asmx,以及调用哪个方法,例如UpdateListItems.

有人可以指导我完成以下任务:
1-批准工作流任务SharePoint Web Services是否可行？
2-你能告诉我一个如何批准任务的例子,例如调用哪种服务和方法以及参数应该是什么？

更新
我一直在使用以下XML来设置工作流程来完成:

 batchElement.InnerXml = "<Method ID='1' Cmd='Update'>" // Also used Moderate
                + "<Field Name='ID'>115</Field>"
                + "<Field Name='Status'>Completed</Field>"
                + "<Field Name='FormData'>Completed</Field>" // Also used Approved
                + "<Field Name='WorkflowOutcome'>Approved</Field>"
                + "<Field Name='Completed'>True</Field>"
                + "<Field Name='PercentComplete'>1</Field>"
                + "<Field Name='_ModerationStatus'>0</Field>"
                + "</Method>";

任务列表项已更新,但WorkflowOutcome仍为空,工作流不会移至下一步.
我还缺少什么？

更新#2
我怀疑任务列表项的ExtendedProperties.对于使用UI完成的项目,ExtendedProperties显示ws_TaskStatus ='已批准'.但是,对于使用代码批准的项目,ws_TaskStatus不存在.

更新#3
从MSDN帖子中,我被告知要使用Workflow.asmx而不是Lists.asmx.
我使用了以下代码:

WorkflowService.Workflow listProxy = new WorkflowService.Workflow();
listProxy.Url = "http://<server_name>/_vti_bin/workflow.asmx";
listProxy.UseDefaultCredentials = true;

int todoID = 118;
Guid tasklistID = new Guid("{79ABFDE7-0398-4AD7-918A-0D40204E7726}");
string itemURL = "http://<server_name>/TestLibrary/volshext.log";
XmlDocument taskData = new XmlDocument();
taskData.Load(@"..\..\TaskData.xml");

try
{
   XmlNode response = listProxy.AlterToDo(itemURL, todoID, tasklistID, taskData.DocumentElement);
   Console.WriteLine(response.InnerText);
}

我用来批准任务的XML是

<my:myFields xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD" >
 <my:TaskStatus>#</my:TaskStatus>
 <my:Comments />
 <my:DelegateTo />
 <my:NewDescription>Please approve Workflow Demo</my:NewDescription>
 <my:NewDueDate />
 <my:RequestTo />
 <my:Decline>0</my:Decline>
 <my:dcr>0</my:dcr>
 <my:Status>Completed</my:Status>
</my:myFields>

但是,任务再次更新,但工作流程没有向前推进.

更新#4
我已经使用SharePoint服务器对象模型进行了最后一次试用,但同样,任务已更新,但工作流程未向前发展.
这是我的代码:

SPSite site = new SPSite("http://sitenamehere/");
using (SPWeb web = site.OpenWeb())
{
   SPList list = web.Lists["Shared Documents"];
   //SPListItem item = list.GetItemById(18);
   SPListItem item = list.GetItemByUniqueId(new Guid("5300d16e-94f8-4338-8206-4a57ab7c369b"));
   SPWorkflow workflow = item.Workflows[0];
   SPWorkflowTask task = workflow.Tasks[0];
   Hashtable ht = new Hashtable();

   ht[SPBuiltInFieldId.Completed] = "TRUE";
   ht["Completed"] = "TRUE";
   ht[SPBuiltInFieldId.PercentComplete] = 1.0f;
   ht["PercentComplete"] = 1.0f;
   ht["Status"] = "Completed";
   ht[SPBuiltInFieldId.TaskStatus] = SPResource.GetString(new CultureInfo((int)task.Web.Language, false), Strings.WorkflowStatusCompleted, new object[0]);
   //ht["TaskStatus"] = "#";
   //ht["ows_TaskStatus"] = "Approved";
   //ht["FormData"] = SPWorkflowStatus.Completed;
   //ht["Outcome"] = "Approved";
   //task.ModerationInformation.Status = SPModerationStatusType.Approved;

   web.AllowUnsafeUpdates = true;
   SPWorkflowTask.AlterTask((task as SPListItem), ht, true);
}

Answer 1

经过大量的试验和调查后,我只是使用以下代码来批准该任务

SPSite site = new SPSite("http://servername/");
using (SPWeb web = site.OpenWeb())
{
    SPList list = web.Lists["TestList"];
    SPListItem item = list.GetItemById(22);
    SPWorkflow workflow = item.Workflows[0];
    SPWorkflowTask task = workflow.Tasks[0];

    Hashtable ht = new Hashtable();             
    ht[SPBuiltInFieldId.Completed] = "TRUE";
    ht["Completed"] = "TRUE";
    ht[SPBuiltInFieldId.PercentComplete] = 1.0f;
    ht["PercentComplete"] = 1.0f;
    ht["Status"] = "Completed";
    ht[SPBuiltInFieldId.TaskStatus] = SPResource.GetString(new CultureInfo((int)task.Web.Language, false), Strings.WorkflowStatusCompleted, new object[0]);
    ht[SPBuiltInFieldId.WorkflowOutcome] = "Approved";
    ht["TaskStatus"] = "Approved";
    ht["FormData"] = SPWorkflowStatus.Completed;

    web.AllowUnsafeUpdates = true;
    SPWorkflowTask.AlterTask((task as SPListItem), ht, true);
}

我怀疑ht["TaskStatus"] = "Approved";是那个解决它的属性.无论如何,我将尝试缩小需要更改的属性集.