TicketImporter.TfsFieldCollection.Add C# (CSharp) Method

        public void Add(TfsField field)
        {
            if (fields.Contains(field) == false)
            {
                fields.Add(field);
            }
        }

        public static TfsFieldCollection GetFieldsFor(TfsTeamProjectCollection tfs, string project)
        {
            if (tfs != null)
            {
                if (lastRequest != project)
                {
                    fields = new TfsFieldCollection();
                    var workItemStore = tfs.GetService<WorkItemStore>();

                    var wits = workItemStore.Projects[project].WorkItemTypes;
                    var required = new HashSet<string>();
                    foreach (var failedFields in
                        (from WorkItemType wit in wits select new WorkItem(wit)).Select(workItem => workItem.Validate())
                        )
                    {
                        foreach (
                            var failedField in
                                failedFields.Cast<Field>().Where(failedField => failedField.Status != FieldStatus.Valid)
                            )
                        {
                            required.Add(failedField.Name);
                        }
                    }

                    var fds = workItemStore.Projects[project].Store.FieldDefinitions;
                    foreach (FieldDefinition fd in fds)
                    {
                        fields.Add(new TfsField(fd, required.Contains(fd.Name)));
                    }

                    lastRequest = project;
                }
            }
            else
            {
                fields = new TfsFieldCollection();
            }

            return fields;
        }