SharePoint - Remove permission for actual approver in approval workflow

Asked By Rahul Khanna on 30-Nov-14 05:14 AM

I am programmatically delegating task to another user for a Nintex approval workflow. For example actual approver is "DOMAIN\Test1". And the delegated user is "DOMAIN\Test2"; Using the below code its delegating the task to "DOMAIN\Test2" user but the problem is still the actual approver "DOMAIN\Test1" retain the permission to complete the task, I mean "DOMAIN\Test1" still is able to click the "Complete Task" button, actually this button should be hidden for him("DOMAIN\Test1"). How can I do this?

using (SPSite currentSite = new SPSite("http://tst:001/sites/Test"))

{

using (SPWeb currentWeb = currentSite.OpenWeb())

{

string tasksList = "Workflow Tasks";

SPUser delegateTouser = currentWeb.EnsureUser("DOMAIN\\Test2");

SPListItem listItem = currentWeb.Lists.TryGetList(tasksList).GetItemById(101);

listItem[SPBuiltInFieldId.AssignedTo] = delegateTouser;

listItem[SPBuiltInFieldId.WorkflowVersion] = "1";

listItem.Update();

}