上节已经对本软件的功能和意图进行了详细讲解，这节就不再啰嗦，本节主要对功能实现和代码部分展开讲解.

01

—

前台代码

前台XAML:

<Window x:Class="EquipmentMonitor.EquipmentView"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:local="clr-namespace:EquipmentMonitor"xmlns:cal="http://www.caliburnproject.org" mc:Ignorable="d" WindowStartupLocation="CenterScreen"Title="EquipmentMonitor" Height="610" Width="500" Icon="Display.png"><Window.Resources><Style TargetType="Label"><Setter Property="HorizontalAlignment" Value ="Center"/><Setter Property="VerticalAlignment" Value ="Center"/><Setter Property="FontSize" Value ="14"/><Setter Property="FontWeight" Value ="Black"/>
</Style><Style TargetType="ListBox"><Setter Property="HorizontalAlignment" Value ="Left"/><Setter Property="VerticalAlignment" Value ="Top"/><Setter Property="FontSize" Value ="14"/><Setter Property="FontWeight" Value ="Black"/><Setter Property="ItemTemplate"><Setter.Value><DataTemplate><Border BorderBrush="Gray" BorderThickness="2" Margin="2" ><StackPanel Orientation="Vertical" Background="{Binding BackBrush}"cal:Message.Attach="[Event MouseLeftButtonUp]=[BuildClick($source,$eventArgs)]"><Image Source="../Image/Display.png" Width="100" Height="100" /><Label Content="{Binding Title}" /></StackPanel></Border></DataTemplate></Setter.Value></Setter><Setter Property="ItemsPanel"><Setter.Value><ItemsPanelTemplate><WrapPanel  Orientation="Horizontal" /></ItemsPanelTemplate></Setter.Value></Setter>
</Style></Window.Resources><Grid><ListBox x:Name="EqplistBox"  ItemsSource="{Binding FileDTOList}" ScrollViewer.HorizontalScrollBarVisibility="Disabled" Margin="2"/></Grid>
</Window>

前台代码异常简单，主要就是一个ListBox ，然后通过设置模板，将图片和标签进行界面显示

02

—

后台代码

① 数据模型：FileDTO.cs

using PropertyChanged;
using System;
using System.Collections.ObjectModel;
using System.Text;
using System.Windows.Media;namespace EquipmentMonitor.Model
{[AddINotifyPropertyChangedInterface]public class FileDTO{public FileDTO(){BackBrushList = new ObservableCollection<Brush>();BackBrushList.Add(Brushes.White);BackBrush = Brushes.White;CurrentTime = DateTime.Now;}public string Title { get; set; }public string MonitorPath { get; set; }public int TimeSpan { get; set; }public DateTime CurrentTime { get; set; }public Brush BackBrush { get; set; }public ObservableCollection<Brush> BackBrushList { get; set; }public override string ToString(){StringBuilder report = new StringBuilder();report.AppendLine($"[Title]  = [{Title}]");report.AppendLine($"[MonitorPath]  = [{MonitorPath}]");report.AppendLine($"[TimeSpan]  = [{TimeSpan}]");report.AppendLine($"[CurrentTime]  = [{CurrentTime}]");report.AppendLine($"[BackBrush]  = [{BackBrush}]");foreach (var item in BackBrushList){report.AppendLine($"[BackBrush]  = [{item}]");}return report.ToString();}}
}

这里重写了tostring方法，主要是为了方便log打印.

[AddINotifyPropertyChangedInterface]是PropertyChanged.dll下面的方法，在类顶部附加后，属性变更就可以自动通知界面，而不用一个一个去触发.

② 帮助类：

AutoStartHelper.cs

using Microsoft.Win32;
using System;
using System.Windows.Forms;namespace EquipmentMonitor.Helper
{public class AutoStartHelper{public static void AutoStart(bool isAuto = true, bool showinfo = true){try{if (isAuto == true){RegistryKey R_local = Registry.CurrentUser;//RegistryKey R_local = Registry.CurrentUser;RegistryKey R_run = R_local.CreateSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run");R_run.SetValue("应用名称", Application.ExecutablePath);R_run.Close();R_local.Close();}else{RegistryKey R_local = Registry.CurrentUser;//RegistryKey R_local = Registry.CurrentUser;RegistryKey R_run = R_local.CreateSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run");R_run.DeleteValue("应用名称", false);R_run.Close();R_local.Close();}}//if (showinfo)//      MessageBox.Show("您需要管理员权限修改", "提示");// Console.WriteLine("您需要管理员权限修改");catch (Exception ex){string content = DateTime.Now.ToLocalTime() + " 0001_" + "您需要管理员权限修改" + "\n" + ex.StackTrace + "\r\n";LogHelper.logWrite(content);}}}
}

没啥好讲的，就是为了软件第一次打开后，把启动信息添加到注册表，下次开机后软件可以自己启动；

LogHelper.cs：这是一个简易的log打印帮助类

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace EquipmentMonitor.Helper
{public class LogHelper{public static void logWrite(string Message, string StackTrace = null){if (!File.Exists(AppDomain.CurrentDomain.BaseDirectory + "\\log.txt")){File.Create(AppDomain.CurrentDomain.BaseDirectory + "\\log.txt").Close();}string fileName = AppDomain.CurrentDomain.BaseDirectory + "\\log.txt";string content = DateTime.Now.ToLocalTime() + Message + "\n" + StackTrace + "\r\n";StreamWriter sw = new StreamWriter(fileName, true);sw.Write(content);sw.Close(); sw.Dispose();}}
}

XMLHelper.cs：配置文件读取帮助类

using EquipmentMonitor.Model;
using System;
using System.Collections.ObjectModel;
using System.Xml;namespace EquipmentMonitor.Helper
{public class XMLHelper{public ObservableCollection<FileDTO> XmlDocReader(){try{//XmlDocument读取xml文件XmlDocument xmlDoc = new XmlDocument();xmlDoc.Load(AppDomain.CurrentDomain.BaseDirectory + "\\config.xml");//获取xml根节点XmlNode xmlRoot = xmlDoc.DocumentElement;if (xmlRoot == null){LogHelper.logWrite("xmlRoot is null");return null;}ObservableCollection<FileDTO> FileDTOList  = new ObservableCollection<FileDTO>();//读取所有的节点foreach (XmlNode node in xmlRoot.SelectNodes("FilePath")){FileDTOList.Add(new FileDTO{Title = node.SelectSingleNode("Title").InnerText,MonitorPath = node.SelectSingleNode("MonitorPath").InnerText,TimeSpan = int.Parse(node.SelectSingleNode("TimeSpan").InnerText)});}return FileDTOList;}catch (Exception ex){LogHelper.logWrite(ex.Message, ex.StackTrace);return null;}}}
}

③ Viewmodel部分：EquipmentViewModel.cs

using Caliburn.Micro;
using EquipmentMonitor.Helper;
using EquipmentMonitor.Model;
using PropertyChanged;
using System;
using System.Collections.ObjectModel;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Threading;namespace EquipmentMonitor
{[AddINotifyPropertyChangedInterface]public class EquipmentViewModel : Screen,IViewModel{public ObservableCollection<FileDTO> FileDTOList { get; set; } = new ObservableCollection<FileDTO>();private DispatcherTimer timer;public EquipmentViewModel(){Environment.CurrentDirectory = AppDomain.CurrentDomain.BaseDirectory;//自启动AutoStartHelper.AutoStart();//获取配置信息XMLHelper xmlHelper = new XMLHelper();FileDTOList = xmlHelper.XmlDocReader();FileSystemWatcher();//开启定时器timer = new DispatcherTimer();timer.Interval = TimeSpan.FromSeconds(10);timer.Tick += timer_Tick;timer.Start();Thread backThread = new Thread(StartRun);backThread.IsBackground = true;backThread.Start();}public void StartRun(){foreach (var fileDTO in FileDTOList){Task.Run(() =>{while (true){if (fileDTO.BackBrushList.Count > 1){Execute.OnUIThread(() =>{if (fileDTO.BackBrush == Brushes.Red){fileDTO.BackBrush = Brushes.Gray;}else{fileDTO.BackBrush = Brushes.Red;}});Thread.Sleep(1000);}Thread.Sleep(100);}});}}public void BuildClick(object sender, MouseButtonEventArgs e){StackPanel controls = sender as StackPanel;string title = null;foreach (var control in controls.Children){if(control is Label){title = (control as Label).Content.ToString();}}foreach (var fileDTO in FileDTOList){if (fileDTO.Title == title){fileDTO.CurrentTime = DateTime.Now;if (fileDTO.BackBrushList.Contains(Brushes.Red)){fileDTO.BackBrushList.Remove(Brushes.Red);fileDTO.BackBrush = Brushes.Gray;}return;}}}public void FileSystemWatcher(){try{foreach (var fileDTO in FileDTOList){FileSystemWatcher watcher = new FileSystemWatcher();try{LogHelper.logWrite($"the FileDTO is {fileDTO}");if (!string.IsNullOrEmpty(fileDTO?.MonitorPath)){watcher.Path = fileDTO?.MonitorPath;}else{LogHelper.logWrite("the MonitorPath is null");continue;}}catch (ArgumentException e){LogHelper.logWrite(e.Message);return;}//设置监视文件的哪些修改行为watcher.NotifyFilter = NotifyFilters.LastAccess| NotifyFilters.LastWrite | NotifyFilters.FileName | NotifyFilters.DirectoryName;watcher.Filter = "*.jpg";//添加事件句柄//当由FileSystemWatcher所指定的路径中的文件或目录的//大小、系统属性、最后写时间、最后访问时间或安全权限//发生更改时，更改事件就会发生watcher.Changed += new FileSystemEventHandler(OnChanged);watcher.Created += new FileSystemEventHandler(OnChanged);watcher.Deleted += new FileSystemEventHandler(OnChanged);watcher.EnableRaisingEvents = true;fileDTO.CurrentTime = DateTime.Now;}}catch (Exception ex){LogHelper.logWrite(ex.Message, ex.StackTrace);}}public void OnChanged(object source, FileSystemEventArgs e){Task.Run(() =>{foreach (var fileDTO in FileDTOList){//LogHelper.logWrite($"the FullPath = {e.FullPath},MonitorPath = {fileDTO.MonitorPath}");if (fileDTO.MonitorPath == Path.GetDirectoryName(e.FullPath)){fileDTO.CurrentTime = DateTime.Now;Execute.OnUIThread(() =>{if (fileDTO.BackBrushList.Contains(Brushes.Red)){fileDTO.BackBrushList.Remove(Brushes.Red);fileDTO.BackBrush = Brushes.Gray;}});//return;}}});}private void timer_Tick(object sender, EventArgs e){foreach (var fileDTO in FileDTOList){if(DiffSeconds(fileDTO.CurrentTime, DateTime.Now) >= fileDTO.TimeSpan){Execute.OnUIThread(() =>{if (!fileDTO.BackBrushList.Contains(Brushes.Red)){fileDTO.BackBrushList.Add(Brushes.Red);var equipmentWindow = (Window)this.GetView();if (equipmentWindow.WindowState == WindowState.Minimized){equipmentWindow.Show();equipmentWindow.WindowState = WindowState.Normal;equipmentWindow.Activate();}}LogHelper.logWrite($"The Alarm Equipment is {fileDTO.Title}");});}}}/// <summary>/// 相差秒/// </summary>/// <param name="startTime"></param>/// <param name="endTime"></param>/// <returns></returns>public double DiffSeconds(DateTime startTime, DateTime endTime){TimeSpan secondSpan = new TimeSpan(endTime.Ticks - startTime.Ticks);return secondSpan.TotalSeconds;}}
}

功能主体都是在这里实现的，

Thread backThread = new Thread(StartRun);backThread.IsBackground = true;

通过背景线程去更新界面alarm显示；

FileSystemWatcher watcher = new FileSystemWatcher();

通过FileSystemWatcher 去监测设备上文件夹是否有文件更新，

public void BuildClick(object sender, MouseButtonEventArgs e)

这个方法主要用来双击界面后消除设备的闪烁显示；

//开启定时器timer = new DispatcherTimer();timer.Interval = TimeSpan.FromSeconds(10);timer.Tick += timer_Tick;timer.Start();

开启定时器，用来检测是否超过设定时间，设备没有数据更新。以上就是此工具的所有功能了，如有疑问欢迎加我微信沟通.

源码下载：

链接：https://pan.baidu.com/s/1kA4scA_3t8F3eeLy-dRWAA 

提取码：6666