server/AyaNova/util/DbUtil.cs

@@ -463,23 +463,23 @@ namespace AyaNova.Util
             List<string> ret = new List<string>();
             using (var conn = new Npgsql.NpgsqlConnection(_dbConnectionString))
             {
-                conn.Open();
+                await conn.OpenAsync();
 
                 using (var command = conn.CreateCommand())
                 {
                     command.CommandText = "SELECT table_name  FROM information_schema.tables WHERE table_schema='public' AND table_type='BASE TABLE';";
-                    using (var result = command.ExecuteReader())
+                    using (var result = await command.ExecuteReaderAsync())
                     {
                         if (result.HasRows)
                         {
-                            while (result.Read())
+                            while (await result.ReadAsync())
                             {
                                 ret.Add(result.GetString(0));
                             }
                         }
                     }
                 }
-                conn.Close();
+                await conn.CloseAsync();
             }
             return ret;
         }