private PagedDataSource BindMethod(PagedDataSource pds, string keyword)
        {
            OthersTradeBo bo = null;
            try
            {
                bo = new OthersTradeBo();
                DataSet ds = responseDataSet(bo);
                DataTable dt = ds.Tables[0];
                //空白时候，搜索全部
                if (string.IsNullOrEmpty(keyword))
                {
                    DataView dv = ds.Tables[0].DefaultView; 
                    pds.DataSource = dv;//视图用于绑定到页面
                    _recordCount = ds.Tables[0].DefaultView.Count;
                }
                else
                {
                    var temp = from c in dt.AsEnumerable() where c.Field<String>("InformationTitle").Contains(keyword) select c;
                    //dt.AsEnumerable().Where(c => c.Field<String>("InformationTitle").Contains(keyword));  //另外的写法，效果一样
                    pds.DataSource = temp.AsDataView();
                    _recordCount = temp.Count();
                }
                bindPageButtons(_recordCount, _pagesize);
                return pds;
            }
            finally { if (bo != null)bo.Dispose(); }
        }