title: Get user's email from "assigned to" field at task workflow of sharepoint
body: <p>I need to get user's email from "assigned to" field at task workflow of sharepoint
  For example when i send email, i use this code:</p>
  
  <pre><code>SPListItem wfItem = onWorkflowActivated1.WorkflowProperties.Item;
              SPFieldUser assignedTo = (SPFieldUser)wfItem.Fields["Assigned To"];
  
              SPFieldUserValue user = (SPFieldUserValue)assignedTo.GetFieldValue(wfItem["Assigned To"].ToString());
              string assigneeEmail = user.User.Email;
  
              sendEmailToAssignee.To = assigneeEmail;
              sendEmailToAssignee.Subject = "New work order has been created.";
              sendEmailToAssignee.Body"Bla bla bla";
  </code></pre>
  
  <p>in "Assigned To" field ( i created) in LitsItem, i have value domain\my_account so I can get my email my_mail@example.com to variable assigneeEmail. Now I need it but in task. In "Assign To" field in task, how can we go it?</p>