sharepoint 获取术语集源的术语并绑定到下拉列表中

///获取术语集源
      TaxonomySession session = new TaxonomySession(site);
      TermStore store = session.DefaultSiteCollectionTermStore;
      GroupCollection GroupAll = session.TermStores["Managed Metadata Service"].Groups; ///术语集源的根节点
      foreach (Group Gr in GroupAll)
       {
          if (Gr.Name == "SanyMetadata")//术语组
          {
             TermSetCollection TermAll = Gr.TermSets;
             foreach (TermSet Term in TermAll)
             {
                if (Term.Name == FieldName)//fieldname 术语集
                {
                    foreach (Term t in Term.Terms)
                    {
                        AddTermSet(t);//添加术语集到下拉列表
                     }
                }
              }
           }
         }
/// <summary>
/// 绑定元数据到下拉列表
/// </summary>
/// <param name="t"></param>
private void AddTermSet(Term t)
{
     this.DocumentType.Items.Add(new ListItem(t.Name, t.Id.ToString()));
     foreach (Term term in t.Terms)
     {
            AddTermSet(term);
     }
}