问如何筛选特定项目的TFS贡献者？

EN

List<string> displayNames = new List<string>();
        TfsTeamProjectCollection tfs = new TfsTeamProjectCollection(new Uri("http://tfsservername:8080/tfs/collectionname"));
        tfs.EnsureAuthenticated();
        WorkItemStore workItemStore = (WorkItemStore)tfs.GetService(typeof(WorkItemStore));

        WorkItemTypeCollection workItemTypes = workItemStore.Projects["Agile"].WorkItemTypes;

        WorkItemType wiType = workItemTypes["task"];

        var allowedValues = wiType.FieldDefinitions[CoreField.AssignedTo].AllowedValues;

        foreach (String value in allowedValues)
        {
            displayNames.Add(value);
        }