useroperate.cs

拍卖系统

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
/// <summary>
/// userOperate 的摘要说明
/// </summary>
namespace myPaimai
{
    public class userOperate
    {
        public userOperate()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }
        public static bool register(string userID,string password)
        {
            dataOperate do1 = new dataOperate();
            string realPassword = (string)do1.executeScalar("SELECT password FROM userPaimai WHERE userID='" + userID + "'");
            if ((int)do1.executeScalar("SELECT COUNT(*) FROM userPaimai WHERE userID='" + userID + "'") == 0)
              HttpContext.Current.Response.Write("<script language='javascript'>alert('用户名不存在！')</script>");
            else if (HttpContext.Current.Session["userID"] != null && userID == HttpContext.Current.Session["userID"].ToString())
            {   
                HttpContext.Current.Response.Write("<script language='javascript'>alert('您已经以" + (string)HttpContext.Current.Session["userID"] + "身份登录了！')</script>");
               
            }
            else if (realPassword.Trim() != password)
            {
                HttpContext.Current.Response.Write("<script language='javascript'>alert('对不起，密码不正确！')</script>");
            }
            else
            {   
                HttpContext.Current.Session["userID"] = userID;
                HttpContext.Current.Session["password"] = password;
              // Head1.user.Text = "<font size=2 color=green><b>" + userID + "</b></font>";
                return true;
            }
            return false;
        }
    }
}