Approve a SharePoint workflow task using SharePoint Web Services / Object Model

Question

I have created a workflow is SharePoint Designer and associated it with a list. The workflow creates an approval process, so SharePoint creates a task in the Tasks list so t

Answer 1

You can use the following code that uses the lists web service and the UpdateListItems method. The key is to use the Cmd='Moderate'

 public static XmlNode UpdateListItemApprove()
 {
            listservice.Lists listProxy = new listservice.Lists();


            string xml = "http://basesmcdev2/sites/tester1/approvals/KL022030.lic0";

            XmlDocument doc = new XmlDocument();
            doc.LoadXml(xml);

            XmlNode batchNode = doc.SelectSingleNode("//Batch");

            listProxy.Url = "http://basesmcdev2/sites/tester1/_vti_bin/lists.asmx";
            listProxy.UseDefaultCredentials = true;

            XmlNode resultNode = listProxy.UpdateListItems("approvals", batchNode);

            return resultNode;


}