/// <summary>
 /// 释放树型包所占用的资源
 /// </summary>
 /// <param name="disposing">是否为终结。</param>
 protected virtual void Dispose(bool disposing)
 {
     if (disposing)
     {
         if (_entries != null)
         {
             Clear();
             _entries = null;
         }
         if (_entryList != null)
         {
             _entryList.Dispose();
             _entryList = null;
         }
         if (_comment == null)
         {
             _comment = null;
         }
         if (_attributes != null)
         {
             _attributes.Dispose();
             _attributes = null;
         }
         GC.SuppressFinalize(this);
         //GC.Collect(0);
         //GC.Collect();
     }
 }