RetrunProcedure 返回存储过程

protected SqlConnection Conn;
protected string ConnectionString = "server=.; database=ExpatiateAspNet; uid=sa; pwd=";
protected void Page_Load(object sender, EventArgs e)
{

   using (Conn = new SqlConnection(ConnectionString))
   {
      Conn.Open();//打开数据库连接
      SqlCommand cmd = new SqlCommand("Proc_UserLogin", Conn);
      cmd.CommandType = CommandType.StoredProcedure;//调用存储过程
      cmd.Parameters.Add("@UserName", SqlDbType.VarChar, 50).Value = "mr";
      cmd.Parameters.Add("@UserPwd", SqlDbType.VarChar, 50).Value = "mrsoft";
      SqlDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
      if (dr.Read())
      {
         Response.Write("登录成功！");
      }
   }

}