操作员的管理

第一步：新建一个文件夹为SystemMgr，并为数据库T_Operator添加两个字段RealName，nvarchar(50),不允许为空，IsLocked bit 不允许为空。在Operator.cs中添加字段，代码如下：

 public string RealName { get; set; }
       public bool IsLocked { get; set; }

并修改OperatorDAL.cs中的相关代码。

在SystemMgr下新建一个窗体，OperatorListUI.xaml.代码如下：

<Window x:Class="HRMSys.UI.SystemMgr.OperatorListUI"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="操作员管理" Height="300" Width="500" Loaded="Window_Loaded" >
    <Grid>
        <DockPanel>
            <ToolBar Height="30" DockPanel.Dock="Top">
                <Button Name="btnAdd" Click="btnAdd_Click">
                    <Image Source="../images/add.ico"></Image>
                </Button>
                <Button Name="btnDelete" Click="btnDelete_Click">
                    <Image Source="../images/delete.ico"></Image>
                </Button>
                <Button Name="btnEdit" Click="btnEdit_Click">
                    <Image Source="../images/edit.ico"></Image>
                </Button>
            </ToolBar>
            <DataGrid DockPanel.Dock="Top" Name="gridOperators" IsReadOnly="True" AutoGenerateColumns="False">
                <DataGrid.Columns>
                    <DataGridTextColumn  Header="用户名" Width="100" Binding="{Binding UserName}"></DataGridTextColumn>
                    <DataGridTextColumn  Header="真实姓名" Width="100" Binding="{Binding RealName}"></DataGridTextColumn>
                    <DataGridCheckBoxColumn Header="是否被绑定" Width="100" Binding="{Binding IsLocked}"> </DataGridCheckBoxColumn>
                </DataGrid.Columns>
            </DataGrid>
        </DockPanel>
        
    </Grid>
</Window>

OperatorListUI.XAML.cs的代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using HRMSys.DAL;
using HRMSys.Model;

namespace HRMSys.UI.SystemMgr
{
    /// <summary>
    /// OperatorListUI.xaml 的交互逻辑
    /// </summary>
    public partial class OperatorListUI : Window
    {
        public OperatorListUI()
        {
            InitializeComponent();
        }

        private void btnAdd_Click(object sender, RoutedEventArgs e)
        {
            OperatorEditUI editUI = new OperatorEditUI();
            editUI.IsInsert = true;
            if (editUI.ShowDialog() == true)
            {
                LoadData();
            }

        }
        private void  LoadData()
        {
            OperatorDAL dal = new OperatorDAL();
            gridOperators.ItemsSource = dal.ListAll();
        }

        private void btnDelete_Click(object sender, RoutedEventArgs e)
        {
            Operator op = (Operator)gridOperators.SelectedItem;
            if (op == null)
            {
                MessageBox.Show("没有选中任何行");
                return;
            }
            if (MessageBox.Show("确定要删除" + op.UserName + "吗?", "提醒", MessageBoxButton.YesNo) == MessageBoxResult.Yes)
            {
                OperatorDAL dal = new OperatorDAL();
                dal.DeleteById(op.Id);
                LoadData();
            }

        }

        private void btnEdit_Click(object sender, RoutedEventArgs e)
        {
            Operator op = (Operator)gridOperators.SelectedItem;
            if (op == null)
            {
                MessageBox.Show("没有选中任何行");
                return;
            }
            OperatorEditUI editUI = new OperatorEditUI();
            editUI.IsInsert =false;
            editUI.EditingId = op.Id;
            if (editUI.ShowDialog() == true)
            {
                LoadData();
            }


        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {

            LoadData();
        }
    }
}

在新建一个窗体OperatorEditUI.xaml.设计如下：

代码如下：

<Window x:Class="HRMSys.UI.SystemMgr.OperatorEditUI"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="管理员编辑和修改" Height="300" Width="300" Loaded="Window_Loaded">
    <Grid>
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="34,29,0,0" Name="textBlock1" Text="用户名" VerticalAlignment="Top" />
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="34,58,0,0" Name="textBlock2" Text="真实姓名" VerticalAlignment="Top" />
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="34,95,0,0" Name="textBlock3" Text="初始密码" VerticalAlignment="Top" Width="66" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="123,23,0,0" Name="txtUserName" VerticalAlignment="Top" Width="120" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="123,56,0,0" Name="txtRealName" VerticalAlignment="Top" Width="120" />
        <PasswordBox Height="23" HorizontalAlignment="Left" Margin="123,95,0,0" Name="pwdPassword" VerticalAlignment="Top" Width="120" />
        <Button Content="保存" Height="23" HorizontalAlignment="Left" Margin="46,143,0,0" Name="btnSave" VerticalAlignment="Top" Width="75" Click="btnSave_Click" />
        <Button Content="取消" Height="23" HorizontalAlignment="Left" Margin="168,143,0,0" Name="btnCancel" VerticalAlignment="Top" Width="75" Click="btnCancel_Click" />
    </Grid>
</Window>

 OperatorEditUI.XAML.cs代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using HRMSys.DAL;
using HRMSys.Model;

namespace HRMSys.UI.SystemMgr
{
    /// <summary>
    /// OperatorEditUI.xaml 的交互逻辑
    /// </summary>
    public partial class OperatorEditUI : Window
    {
        public OperatorEditUI()
        {
            InitializeComponent();
        }
        public bool IsInsert{get;set;}
        public Guid EditingId { get; set;}
        private void btnSave_Click(object sender, RoutedEventArgs e)
        {
            if (IsInsert)
            {
                Operator op = new Operator();
                op.UserName = txtUserName.Text;
                op.RealName = txtRealName.Text;
                op.Password = new MD5().GetMD5(pwdPassword.Password + new MD5().GetPasswordSalt());
                new OperatorDAL().Insert(op);
                DialogResult = true;
            }
            else
            {
                string pwd = pwdPassword.Password;
                if (pwd.Length <= 0)//如果编辑的时候密码为空则保留现有密码不动
                {
                    new OperatorDAL().Update(EditingId,txtUserName.Text,txtRealName.Text);
                }
                else//若密码不为空，则将密码重置为用户设置的值
                {
                   // string pwdMd5 = new MD5().GetMD5(pwd + "love@beijing");
                    string pwdMd5 = new MD5().GetMD5(pwd +new MD5().GetPasswordSalt());
                    new OperatorDAL().Update(EditingId, txtUserName.Text, txtRealName.Text, pwdMd5);
                }
                DialogResult = true;
            }
        }

        private void btnCancel_Click(object sender, RoutedEventArgs e)
        {
            DialogResult = false;
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            if (IsInsert)
            {
                
            }
            else
            {
                OperatorDAL dal = new OperatorDAL();
                Operator op=dal.GetById(EditingId);
                txtRealName.Text = op.RealName;
                txtUserName.Text = op.UserName;
            }
        }
    }
}

将MD5加盐的“盐”的字符串放到App.config中，代码如下：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <connectionStrings>
       <add name="dbLoginConnStr" connectionString="Data Source=.; Initial Catalog=HRMSYSDB; User ID=hrmsa ;Password=love@beijing"/>
  </connectionStrings>
  <appSettings>
    <add key="passwordSalt" value="love@beijing"/></appSettings>
</configuration>

 LoginWindow.xaml的设计和代码如下，以及.cs的代码。

<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" WindowStartupLocation="CenterScreen" ResizeMode="NoResize">
    <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" Click="btnCancel_Click" />
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using HRMSys.DAL;
using HRMSys.Model;

namespace HRMSys.UI
{
    /// <summary>
    /// LoginWindow.xaml 的交互逻辑
    /// </summary>
    public partial class LoginWindow : Window
    {
        public LoginWindow()
        {
            InitializeComponent();
        }

        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");
                string mymd5 = new MD5().GetMD5(pwd +new MD5().GetPasswordSalt());
                if (dbMD5 == mymd5)
                {
                    
                    DialogResult = true;
                    MessageBox.Show("登录成功！");
                }
                else
                {
                    MessageBox.Show("用户名或者密码错误！"); 
                }
            }
        }

        private void btnCancel_Click(object sender, RoutedEventArgs e)
        {
            DialogResult = false;
        }
    }
}

MainWindow的Xaml和.cs代码如下：

<Window x:Class="HRMSys.UI.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="人力资源管理系统" Height="350" Width="525" WindowState="Maximized" Loaded="Window_Loaded">
    <Grid>
        <Menu>
            <MenuItem Header="系统" Height="30" DockPanel.Dock="Top">
                <MenuItem   Name="miOperatorMgr" Header="操作员管理" Click="miOperatorMgr_Click"></MenuItem>
            </MenuItem>
            <MenuItem   Name="MD5" Header="MD5加密" Click="MD5_Click"></MenuItem>
        </Menu>
        
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using HRMSys.DAL;
using HRMSys.Model;
using HRMSys.UI.SystemMgr;



namespace HRMSys.UI//UI层需要添加对DAL和Model的引用。引用-->右击添加引用-->项目
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
/// <summary>
/// 
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
       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);
            OperatorListUI ListUI = new OperatorListUI();
            ListUI.ShowDialog();

        }
       
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
       private void MD5_Click(object sender, RoutedEventArgs e)
        {

            string str = new MD5().GetMD5("123456");
            MessageBox.Show(str);
        }
      

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            LoginWindow win = new LoginWindow();
            if (win.ShowDialog() != true)
            {  //  退出程序
                Application.Current.Shutdown();
            }
        }

    }
}

HRMSys.DAL中的MD5.cs的完整代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Cryptography;
using System.Configuration;

namespace HRMSys.DAL
{
    public class MD5
    {
        public  string GetMD5(string strSource)
        {
            MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
            byte[] bytValue, bytHash;
            bytValue = System.Text.Encoding.UTF8.GetBytes(strSource);
            bytHash = md5.ComputeHash(bytValue);
            md5.Clear();
            string sTemp="";
            for(int i=0;i<bytHash.Length;i++)
            {
                sTemp+=bytHash[i].ToString("X").PadLeft(2,'0');
            }
            return sTemp.ToLower();
        }

        public  string GetPasswordSalt()
        {
           string salt = ConfigurationManager.AppSettings["passwordSalt"];
           return salt;
        }


    }

}

OperatorDAL.cs代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using HRMSys.Model;
using System.Data.SqlClient;
using System.Data;

namespace HRMSys.DAL
{
    public class OperatorDAL
    {//在SQL语句中bit用0,1表示，但是在.NET中用bool表示
        public void Insert(Operator op) //需要HRMSys.DAL添加对HRMSys.Model的引用，引用-->右击添加引用-->项目
        {
            SqlHelper.ExecuteNonQuery(@"insert into T_Operator (Id,UserName,Password,IsDeleted,RealName,IsLocked) values(newid(),
                            @UserName,@Password,0,@RealName,0)",
                new SqlParameter("@UserName", op.UserName), new SqlParameter("@Password", op.Password),new SqlParameter("@RealName",op.RealName));

        }
        //封装一个ToOperator的方法
        public Operator ToOperator(DataRow row)
        {
            Operator op = new Operator();
            op.Id=(Guid)row["Id"];
            op.UserName=(string)row["UserName"];
            op.Password=(string)row["Password"];
            op.IsDeleted=(bool)row["IsDeleted"];
            op.RealName=(string)row["RealName"];
            op.IsLocked=(bool)row["IsLocked"];
            return op;
        }
        public Operator GetByUserName(string userName)
        {
            DataTable table = SqlHelper.ExecuteDataTable("select * from T_Operator where UserName=@userName and IsDeleted=0", new SqlParameter("@UserName", userName));
            if (table.Rows.Count <= 0)
            {
                return null;
            }
            else if (table.Rows.Count > 1)
            {
                throw new Exception("存在同名用户！");
            }
            else
            {
                DataRow row = table.Rows[0];
                return ToOperator(row);
                
            }
        }
        //软删除
        public void DeleteById(Guid id)
        {
            SqlHelper.ExecuteNonQuery(@"Update T_Operator Set IsDeleted=1 where Id=@id", new SqlParameter("@id", id));
        }
        //显示所有
        public Operator[] ListAll()
        {
            DataTable dt = SqlHelper.ExecuteDataTable("Select * from T_Operator where IsDeleted=0");
            Operator[] operators = new Operator[dt.Rows.Count];
            for (int i = 0; i < dt.Rows.Count;i++ )
            {
                operators[i] = ToOperator(dt.Rows[i]);
            }
            return operators;
        }
        public Operator GetById(Guid id)
        {
            
             DataTable table = SqlHelper.ExecuteDataTable("select * from T_Operator where Id=@Id", new SqlParameter("@Id", id));
             if (table.Rows.Count <= 0)
            {
                return null;
            }
            else if (table.Rows.Count > 1)
            {
                throw new Exception("存在重复ID用户！");
            }
            else
            {
                DataRow row = table.Rows[0];
                return ToOperator(row);
             
            }
        }
        //更新
        public void Update(Guid id ,string userName,string realName)
        {
            SqlHelper.ExecuteNonQuery(@"Update T_Operator Set UserName=@UserName,RealName=@RealName where Id=@id",
                new SqlParameter("@UserName", userName), new SqlParameter("@RealName", realName), new SqlParameter("@id", id));
        }
        public void Update(Guid id,string userName, string realName,string pwd)
        {
            SqlHelper.ExecuteNonQuery(@"Update T_Operator Set UserName=@UserName,RealName=@RealName,Password=@Password where Id=@id",
                new SqlParameter("@UserName", userName), new SqlParameter("@RealName", realName), new SqlParameter("@id", id),
                 new SqlParameter("@Password", pwd));
        }
      }
}

SQLHelper.cs代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;

namespace HRMSys.DAL
{
    static class SqlHelper  //只在DAL层调用，所以设置为static
    {
        //每个实例都需要查看是否修改连接字符串
        private static string connStr = ConfigurationManager.ConnectionStrings["dbLoginConnStr"].ConnectionString;
        //封装方法的原则是：把不变的放到方法里，变化的方法参数中
        public static int ExecuteNonQuery(string sql)
        {
            using (SqlConnection conn = new SqlConnection(connStr))
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = sql;
                    return cmd.ExecuteNonQuery();
                }
            }
        }
        public static void ExecuteNonQuery(string sql, params SqlParameter[] parameters)
        {
            using (SqlConnection conn = new SqlConnection(connStr))
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = sql;
                    cmd.Parameters.AddRange(parameters);
                    cmd.ExecuteNonQuery();
                }
            }
        }
        public static object ExecuteScalar(string sql)
        {
            using (SqlConnection conn = new SqlConnection(connStr))
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = sql;
                    return cmd.ExecuteScalar();
                }
            }
        }
        public static DataSet ExecuteDataSet(string sql)
        {

            using (SqlConnection conn = new SqlConnection(connStr))
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = sql;
                    SqlDataAdapter adapter = new SqlDataAdapter(cmd);
                    DataSet dataset = new DataSet();
                    adapter.Fill(dataset);
                    return dataset;
                 }
            }
        }
        public static DataTable ExecuteDataTable(string sql, params SqlParameter[] parameters)
        {
            using (SqlConnection conn = new SqlConnection(connStr))
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = sql;
                    cmd.Parameters.AddRange(parameters);
                    SqlDataAdapter adapter = new SqlDataAdapter(cmd);
                    DataSet ds = new DataSet();
                    adapter.Fill(ds);
                    return ds.Tables[0];
                }
            }
         }

         public static object FromDbValue(object value)
        {
            if (value == DBNull.Value)
            {
                return  null;
            }
            else
            {
                return value;
            }
        }
         public static object ToDbValue(object value)//private是类内部的方法，现在需要变成公用的，所以修改private为public
         {
             if (value == null)
             {
                 return DBNull.Value;
             }
             else
             {
                 return value;
             }

         }
    }
}