public static void AddFieldToList(SPList list, SPField field)
{
list.RequireNotNull("list");
field.RequireNotNull("field");
if (!list.Fields.Contains(field.Id))
{
list.Fields.Add(field);
list.Update();
}
}
public static void AddFieldToContentType(SPContentType cType, SPField field)
{
cType.RequireNotNull("cType");
field.RequireNotNull("field");
var matchingLinks = from SPFieldLink fl in cType.FieldLinks
where fl.DisplayName.Equals(field.Title)
select fl;
if (!cType.Fields.Contains(field.Id) && matchingLinks.Count() == 0)
{
SPFieldLink fieldLink = new SPFieldLink(field);
cType.FieldLinks.Add(fieldLink);
cType.Update(true);
}
}