我使用這個查詢分頁參數化查詢ado.net問題
string selectStatement = "SELECT * FROM (SELECT ROW_NUMBER() OVER (ORDER BY @sortMember @sortDirection) AS RowNum, * FROM School) AS Rows WHERE RowNum > @pageFrom AND RowNum < @pageTo ";
command.Parameters.Add("@sortDirection", System.Data.SqlDbType.NVarChar, 50);
command.Parameters["@sortDirection"].Value = cmd.SortDescriptors.Count == 0 ? "" : cmd.SortDescriptors[0].SortDirection == System.ComponentModel.ListSortDirection.Ascending ? "" : "DESC";
如果sortDirection是「」我得到一個異常。 如果你這樣使用它,它工作正常,但我想讓它參數化查詢。解決辦法是什麼?
string selectStatement = string.Format("SELECT * FROM (SELECT ROW_NUMBER() OVER (ORDER BY @sortMember {0}) AS RowNum, * FROM School) AS Rows WHERE RowNum > @pageFrom AND RowNum < @pageTo ",System.ComponentModel.ListSortDirection.Ascending ? "" : "DESC);
我得到的異常是:'@sortDirection'附近的語法不正確。
什麼例外? – gbn 2011-06-16 17:34:41
檢查@sortDirection是否有效,或者給它一個默認值? – 2011-06-16 17:38:10