c#中SqlHelper类的编写（三）下面我们直接用可变长度参数的方式写一个完整的SqlHelper增删改public static int ExecuteNonQuery(string sql,params Parameter[] parameters){using(SqlConnection conn = new SqlConnection(conStr)){conn.Open();using(SqlCommand cmd = conn.CreateCommand()){cmd.CommandText=sql;cmd.Parameters.AddRange(parameters);return cmd.ExecuteNonQuery();}}}查public static object ExecuteScalar(string sql,params Parameter[] parameters){using(SqlConnection conn = new SqlConnection(conStr)){conn.Open();using(SqlCommand cmd = conn.CreateCommand()){cmd.CommandText=sql;cmd.Parameters.AddRange(parameters);SqlDataAdapter adpter = new SqlDataAdapter(cmd);DataSet data = new DataSet();adapter.Fill(data);return data;}}}