public static bool check_received(int id)
 {
     CE sqlCe = new CE();
     string query = "SELECT * FROM cerpdb.delivery_items WHERE did = '" + id + "' AND delivery_id > 0";
     foreach (var l in sqlCe.Select(query, new int[] { 0 }))
     {
         if (l != null)
         {
             return true;
         }
     }
     return false;
 }
 static bool Is_Exist(Int64 id)
 {
     CE sqlCe = new CE();
     foreach (var l in sqlCe.Select(
         "SELECT did FROM tbl_delivery_items_received WHERE did = " + id, // - select query
         new int[] { 0 } // - index columns
         ))
     {
         if (l != null)
         {
             return true;
         }
     }
     return false;
 }
 internal static bool id(int id)
 {
     sqlCe = new CE();
     var result = sqlCe.Select("SELECT id FROM GetMaterialIssuance WHERE id = " + id, new int[] { 0 });
     foreach (var i in result)
     {
         return true;
     }
     return false;
 }