问题：页面传送什么东西？

using Cs.Client.Info;   // 在这里引用了namespace oper
{
   public class login : System.Web.UI.Page
   {
      protected System.Web.UI.WebControls.Button btnLogin;
      protected System.Web.UI.WebControls.TextBox tbName;      private void btnLogin_Click(object sender, System.EventArgs e)
      {
          if ( tbName.Text == "" ) Info.SetError("name_no_empty");
      }
      ...
   }
}