asp.net数据库操作2——nonquery

if(!Page.IsPostBack)
   {
    SqlConnection conn = new SqlConnection(con);
    conn.Open();

    string strSql = "insert into 公告 (标题,内容) values ('这是标题1','这是内容1')";
    SqlCommand cm = new SqlCommand(strSql,conn);

    int i = cm.ExecuteNonQuery();

    Response.Write(i);

    conn.Close();
   }