admin.aspx.cs

电脑用户登录注册系统

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.Security.Cryptography;
using System.Data.OleDb;

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

    }
    
    protected void Buttondelete_Click(object sender, EventArgs e)
    {   string Username = TextBoxUserName.Text;
        string connStr = @"Provider=Microsoft.Jet.OleDb.4.0;Data Source=" + Server.MapPath("./App_Data") + @"/user.mdb";
        OleDbConnection conn = new OleDbConnection();
        conn.ConnectionString = connStr;

        try
        {
            conn.Open();

            string sql = "delete from user_table (username) value('" + Username +"')";

            OleDbCommand cmd = new OleDbCommand();
            cmd.Connection = conn;
            cmd.CommandText = sql;
            cmd.ExecuteNonQuery();
            conn.Close();
            
        }
        catch (Exception eee)
        {
            ;
        }
        finally
        {
            conn.Close();
        }

        Response.Redirect("Default.aspx");
        
    }

    
    
    protected void ButtonUpdate_Click(object sender, EventArgs e)
    {
        string Username = TextBoxUserName.Text;
        string Password = TextBoxPassword.Text;
        
        string FirstName = TextBoxFirstName.Text;
        string LastName = TextBoxLastName.Text;
        string CreditCard = TextBoxCreditCard.Text;
        string Email = TextBoxEmail.Text;


        string connStr = @"Provider=Microsoft.Jet.OleDb.4.0;Data Source=" + Server.MapPath("./App_Data") + @"/user.mdb";
        OleDbConnection conn = new OleDbConnection();
        conn.ConnectionString = connStr;

        try
        {
            conn.Open();

            string sql = "update into user_table (username,password,firstname,lastname,creditcard,email) value('" + Username + "''," + Password + "','" + FirstName + "','" + LastName + "','" + CreditCard + "','" + Email + "')";

            OleDbCommand cmd = new OleDbCommand();
            cmd.Connection = conn;
            cmd.CommandText = sql;
            cmd.ExecuteNonQuery();
            conn.Close();
            
        }
        catch (Exception ee)
        {
            ;
        }
        finally
        {
            conn.Close();
        }

        Response.Redirect("Default.aspx");
        
    }
    
}