/// <summary>
 /// 项目值不能重复
 /// </summary>
 /// <param name="itemValue">项目值</param>
 /// <param name="keyValue">主键</param>
 /// <param name="itemId">分类Id</param>
 /// <returns></returns>
 public bool ExistItemValue(string itemValue, string keyValue, string itemId)
 {
     return(service.ExistItemValue(itemValue, keyValue, itemId));
 }