C#接触…… 入门2, 添加窗体支持

通过输入用户名和口令判断该用户是否能够进入

 

Program.cs部分

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Collections;using System.IO;using System.Windows.Forms;namespace CSDemo{ class Test40 { static Hashtable users = null; private static string logfile = "d://eror.log"; static Test40() { users = new Hashtable(); users["张睿卿"] = (int)1234; users["老马"] = (int)4567; users["宁波大学"] = (int)6789; } //Form1 aw = new Form1(); static void Main(string[] args) { Form1 sform = new Form1(); while (true) { if (sform.ShowDialog() == DialogResult.OK) {//Console.WriteLine("Please input user name:"); //string user = Console.ReadLine(); //Console.WriteLine("Please input password"); //int psw = int.Parse(Console.ReadLine()); if (users[sform.User] != null && (int)(users[sform.User]) == sform.PassWord) { MessageBox.Show(string.Format("Welcome to {0}!", sform.User)); } else { MessageBox.Show("Sorry, you can't access to here!"); //以追加模式打开记录文件 TextWriter error = new StreamWriter(logfile, true); error.WriteLine("{0} tries to login with the psw of {1} at {2}!", sform.User, sform.PassWord, DateTime.Now); error.Close(); } } else return; } } }}

 

 

Form1.cs部分（不含设计视图）

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace CSDemo{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } public String User { get { return user.Text; } } public int PassWord { get { return int.Parse(password.Text); } } private void Form1_Load(object sender, EventArgs e) { } }}