系统设置

设计数据库，表名T_Setting

插入数据如下：

此没有Model，只有DAL

新建SettingDAL类，代码如下：

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

namespace HRMSys.DAL
{
    public class SettingDAL
    {
        public void SetValue(string name, string value)
        {
            int i = SqlHelper.ExecuteNonQuery("Update T_Setting set Value=@Value where Name=@Name",
                new SqlParameter("@Value",value),
                new SqlParameter("@Name", name));
            if (i != 1)//只可能出现在开发、测试阶段
            {
                throw new Exception("影响行数不是1，而是"+i);
            }
        }

        public void SetValue(string name, bool value)
        {
            SetValue(name, value.ToString());
        }

        public void SetValue(string name, int value)
        {
            SetValue(name, value.ToString());
        }

        public string GetValue(string name)
        {
            DataTable table = SqlHelper.ExecuteDataTable("select Value from T_Setting where Name=@Name",
                    new SqlParameter("@Name", name));
            if (table.Rows.Count <= 0)
            {
                throw new Exception(name + "不存在！");
            }
            else if (table.Rows.Count > 1)
            {
                throw new Exception("出现"
                    + table.Rows.Count + "条Name=" + name + "的Settings数据");
            }
            else
            {
                DataRow row = table.Rows[0];
                return (string)row["Value"];
            }
        }

        //todo:重载！
        public bool GetBoolValue(string name)
        {
            return Convert.ToBoolean(GetValue(name));
        }

        public int GetIntValue(string name)
        {
            return Convert.ToInt32(GetValue(name));
        }
    }
}

在SystemMgr文件夹中新建一个窗体-SettingWindow.xaml，设计代码如下：

<Window x:Class="HRMSys.UI.SystemMgr.SettingWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="SettingWindow" Height="300" Width="300" Loaded="Window_Loaded">
    <Grid>
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="8,10,0,0" Name="textBlock1" Text="公司名称" VerticalAlignment="Top" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="62,0,0,0" Name="txtCompanyName" VerticalAlignment="Top" Width="145" />
        <CheckBox Content="启用生日提醒，提前天数" Height="16" HorizontalAlignment="Left" Margin="8,77,0,0" Name="cbBirthDayPrompt" VerticalAlignment="Top" />
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="8,39,0,0" Name="textBlock2" Text="公司网站" VerticalAlignment="Top" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="62,38,0,0" Name="txtCompanySite" VerticalAlignment="Top" Width="145" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="165,70,0,0" Name="txtBirthDayDays" VerticalAlignment="Top" Width="42" />
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="11,105,0,0" Name="textBlock3" Text="工号前缀" VerticalAlignment="Top" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="62,104,0,0" Name="txtEmployeeNumberPrefix" VerticalAlignment="Top" Width="145" />
        <Button Content="保存" Height="23" HorizontalAlignment="Left" Margin="153,179,0,0" Name="btnSave" VerticalAlignment="Top" Width="75" Click="btnSave_Click" />
    </Grid>
</Window>

窗体加载时候和保存按钮的事件如下;

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;

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

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            SettingDAL dal = new SettingDAL();
            txtCompanyName.Text = dal.GetValue("公司名称");
            txtCompanySite.Text = dal.GetValue("公司网站");
            cbBirthDayPrompt.IsChecked = dal.GetBoolValue("启用生日提醒");
            txtBirthDayDays.Text = dal.GetValue("生日提醒天数");
            txtEmployeeNumberPrefix.Text = dal.GetValue("员工工号前缀");
        }

        private void btnSave_Click(object sender, RoutedEventArgs e)
        {
            SettingDAL dal = new SettingDAL();
            dal.SetValue("公司名称", txtCompanyName.Text);
            dal.SetValue("公司网站", txtCompanySite.Text);
            dal.SetValue("启用生日提醒", (bool)cbBirthDayPrompt.IsChecked);
            dal.SetValue("生日提醒天数", txtBirthDayDays.Text);
            dal.SetValue("员工工号前缀", txtEmployeeNumberPrefix.Text);

            DialogResult = true;
        }
    }
}

在主窗体MainWindow.xaml窗体中添加一个

 <MenuItem Name="miSetting" Header="系统设置" Click="miSetting_Click"></MenuItem>

Click代码如下：

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

其中要修改的部分是：

1.在MainWindow.xaml加载时候设置标题为公司名称，所以在他的Loaded事件中添加下列代码：

 this.Title = new SettingDAL().GetValue("公司名称")+"人事管理系统";

2.在员工生日提醒的代码中修改成为如下：就是将最外层的if语句中的代码写在if语句里。

 if (new SettingDAL().GetBoolValue("启用生日提醒"))
            {
                //检测一个月之内合同到期的员工
                if (birthdayEmployees.Length > 0)
                {
                    StringBuilder sb = new StringBuilder();
                    for (int i = 0; i < birthdayEmployees.Length; i++)
                    {
                        sb.Append(birthdayEmployees[0].Name).Append(",");
                    }
                    sb.Append("三天之内过生日");
                    //MessageBox.Show(sb.ToString());
                    PopupWindow popupWin = new PopupWindow();
                    popupWin.Left = SystemParameters.WorkArea.Width - popupWin.Width;
                    popupWin.Top = SystemParameters.WorkArea.Height - popupWin.Height;
                    popupWin.Message = sb.ToString();
                    popupWin.Show();
                }
            }            
        }

3.在新增员工时候即在EmployeeEditWindow窗体加载的时候，判断是新增的时候，从数据库中读出员工编号前缀

 //employee.Number = "YG";
                employee.Number = new SettingDAL().GetValue("员工工号前缀");

最后就是试运行。

 在运行时候需要补充的是，PopupWindow窗体，用于生日信息提醒，设计代码如下：

<Window x:Class="HRMSys.UI.PopupWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         Title="提醒" Height="200" Width="300"
        ResizeMode="NoResize" Loaded="Window_Loaded">
    <Grid>
        <TextBlock TextWrapping="Wrap" Name="txtMsg"></TextBlock>
    </Grid>
</Window>

加载时候的事件代码如下：

    public string Message { get; set; }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            txtMsg.Text = Message;
        }
    

 public string Message { get; set; }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            txtMsg.Text = Message;
        }