MD5加盐实现登录

第一步：新建一个LoginWindow.xaml,设计如下：

代码如下：并为btnLogin按钮添加事件代码如下：

<Window x:Class="HRMSys.UI.LoginWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="LoginWindow" Height="200" Width="300">
    <Grid>
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="20,22,0,0" Name="textBlock1" Text="用户名" VerticalAlignment="Top" />
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="20,57,0,0" Name="textBlock2" Text="密码" VerticalAlignment="Top" Width="58" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="87,17,0,0" Name="txtUserName" VerticalAlignment="Top" Width="120" />
        <PasswordBox Height="23" HorizontalAlignment="Left" Margin="89,53,0,0" Name="pwbPassword" VerticalAlignment="Top" Width="120" />
        <Button Content="登录" Height="23" HorizontalAlignment="Left" Margin="36,102,0,0" Name="btnLogin" VerticalAlignment="Top" Width="75" Click="btnLogin_Click" />
        <Button Content="取消" Height="23" HorizontalAlignment="Left" Margin="163,102,0,0" Name="btnCancel" VerticalAlignment="Top" Width="75" />
    </Grid>
</Window>

btnLogin的事件代码：

private void btnLogin_Click(object sender, RoutedEventArgs e)
        {
            string username = txtUserName.Text;
            string pwd = pwbPassword.Password;
            Operator op=new OperatorDAL().GetByUserName(username);
            if (op == null)
            {
                MessageBox.Show("用户名或者密码错误！");
            }
            else
            {
                string dbMD5 = op.Password;//数据库中存储的密码值。
                string mymd5 = new MD5().GetMD5(pwd+"love@beijing");
                if (dbMD5 == mymd5)
                {
                    MessageBox.Show("登录成功！");
                }
                else
                {
                    MessageBox.Show("用户名或者密码错误！"); 
                }
            }
        }

再次在MainWindow中添加Loaded事件代码如下：

 private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            LoginWindow win = new LoginWindow();
            win.ShowDialog();
        }

修改下 miOperatorMgr_Click(object sender, RoutedEventArgs e)如下代码：

 private void miOperatorMgr_Click(object sender, RoutedEventArgs e)
        {   //写一个固定用户进行测试
            string str = "123";
            string md5 = new MD5().GetMD5(str+"love@beijing");
            Operator op = new Operator();//注意1.App.config要放在UI层中。
            op.UserName = "王五";//2.DAL层通过ConfigurationManager可以读取主项目中的配置文件中得信息。
            op.Password = md5;//引用关系：DAL引用Model，UI引用DAL和Model
            OperatorDAL dal = new OperatorDAL();
            dal.Insert(op);

        }