reg.aspx.cs

简单新闻管理系统一个采用Access数据库的新闻管理系统

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
using System.Data.OleDb;

public partial class reg : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        this.TextBox1.Text = "";
        this.TextBox2.Text = "";
        this.TextBox3.Text = "";
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        if (Page.IsValid)
        {

            string strconn = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" + Server.MapPath("App_Data/news.mdb");
            OleDbConnection conn = new OleDbConnection(strconn);
            string userName = TextBox1.Text.Trim();
            string sql = "select count(*) from userinfo where username='" + userName + "'";
            conn.Open();
            OleDbCommand cmd = new OleDbCommand(sql, conn);
            int n = (int)cmd.ExecuteScalar();

            if (n > 0)
            {
                Response.Write("<script> alert(\"该用户名已经存在！ \") </script>");
                return;

            }

            string Pwd = this.TextBox2.Text.Trim();
            string Emai = this.TextBox3.Text.Trim();
            string time = DateTime.Now.ToString();
            string SqlAdd = "INSERT INTO userinfo(username,pwd,E_mail,addedtime) values('" + userName + "','" + Pwd + "','" + Emai + "','"+time+"')";
            OleDbCommand MyCmd = new OleDbCommand(SqlAdd, conn);
            MyCmd.ExecuteNonQuery();
            conn.Close();
            Session["username"] = userName;
            Response.Write("<script> alert(\"恭喜您！注册成功！\") </script>");
            return;
           







        }

    }
}