实验3：进程管理练习

通过本实验，熟悉和掌握Process类的使用。

1、创建一个WPF应用程序项目

2、将App.xaml中的Application.Resources节内容改为

<Application x:Class="WpfApp1.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:WpfApp1"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
        <Style x:Key="LabelStyle" TargetType="Label">
            <Setter Property="FontSize" Value="14"/>
            <Setter Property="HorizontalContentAlignment" Value="Center"/>
            <Setter Property="HorizontalAlignment" Value="Center" />
            <Setter Property="Background" Value="AliceBlue"/>
        </Style>
        <Style x:Key="BorderStyle" TargetType="Border">
            <Setter Property="Height" Value="35"/>
            <Setter Property="VerticalAlignment" Value="Center"/>
            <Setter Property="Background" Value="AliceBlue"/>
        </Style>
    </Application.Resources>
</Application>

3、修改MainWindow.xaml及代码隐藏类

MainWindow.xaml

<Window x:Class="WpfApp1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp1"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid Margin="20">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <Rectangle Grid.ColumnSpan="2" Fill="White" RadiusX="14" RadiusY="14" Stroke="Blue" StrokeDashArray="3"/>
        <Rectangle Grid.Column="0" Margin="7" Fill="#FFF0F9D8" RadiusX="10" RadiusY="10" Stroke="Blue" StrokeDashArray="3"/>
        <Rectangle Grid.Column="0" Margin=" 20" Fill="White" Stroke="Blue"/>
        <ScrollViewer Grid.Column="0" Margin="20">
            <StackPanel>
                <StackPanel.Resources>
                    <Style TargetType="Button">
                        <Setter Property="HorizontalContentAlignment" Value="Center"/>
                        <Setter Property="Margin" Value="5 10 5 0"/>
                        <Setter Property="Padding" Value=" 15 0 15 0"/>
                        <Setter Property="FontSize" Value=" 10"/>
                        <EventSetter Event="Click" Handler="button_Click"/>
                    </Style>
                </StackPanel.Resources>
                <Button Content="例1（StartStopProcess）" Tag="/Examples/Page1.xaml"/>
                
            </StackPanel>
        </ScrollViewer>
        <Frame Name="frame1" Grid.Column="1" Margin="10" BorderThickness="1" BorderBrush="Blue" NavigationUIVisibility="Hidden"/>
    </Grid>
</Window>

MainWindow.xaml.cs主要内容

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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;

namespace WpfApp1
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        Button oldButton = new Button();
        public MainWindow()
        {
            InitializeComponent();
        }
        private void button_Click(object sender, RoutedEventArgs e)
        {
            Button btn = e.Source as Button;
            btn.Foreground = Brushes.Black;
            oldButton.Foreground = Brushes.Black;
            oldButton = btn;
            frame1.Source = new Uri(btn.Tag.ToString(), UriKind.Relative);
        }
    }
}

修改Page1.xaml的核心代码

<Page x:Class="WpfApp1.Examples.Page1"
      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:WpfApp1.Examples"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="Page1">

    <DockPanel Background="White">
        <Label DockPanel.Dock="Top" Content="启动、停止和观察进程"
               Style="{StaticResource LabelStyle}"/>
        <Border DockPanel.Dock="Bottom" Style="{StaticResource BorderStyle}">
            <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
                <Button Name="btnStart" Width="70"
                        Content="启动进程" Click="BtnStart_Click"/>
                <Button Name="btnStop" Margin="20 0 0 0" Width="70"
                        Content="停止进程" Click="BtnStop_Click"/>
            </StackPanel>
        </Border>
        <DataGrid Name="dataGrid1" Background="White" Margin="5"
                  IsReadOnly="True" AutoGenerateColumns="False">
            <DataGrid.Columns>
                <DataGridTextColumn Header="进程ID" 
                                   Binding="{Binding Path=Id}" Width="50"/>
                <DataGridTextColumn Header="进程名称" 
                                   Binding="{Binding Path=ProcessName}" Width="70"/>
                <DataGridTextColumn Header="占用内存" 
                                   Binding="{Binding Path=TotalMemory}" Width="80"/>
                <DataGridTextColumn Header="启动时间" 
                                   Binding="{Binding Path=StartTime}" Width="130"/>
                <DataGridTextColumn Header="文件路径" 
                                   Binding="{Binding Path=FileName}"/>
                
            </DataGrid.Columns>
         </DataGrid>
    </DockPanel>
</Page>

Page1.xaml.cs的核心代码

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
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;

namespace WpfApp1.Examples
{
    /// <summary>
    /// Page1.xaml 的交互逻辑
    /// </summary>
    public partial class Page1 : Page
    {
        int fileIndex = 1;
        string fileName = "Notepad";
        List<Data> list = new List<Data>();
        public Page1()
        {
            InitializeComponent();
        }

        private void BtnStart_Click(object sender, RoutedEventArgs e)
        {
            string argument = Environment.CurrentDirectory + "\\myfile" + (fileIndex++) + ".txt";
            if (File.Exists(argument)==false)
            {
                File.CreateText(argument);
            }
            Process p = new Process();
            p.StartInfo.FileName = fileName;
            p.StartInfo.Arguments = argument;
            p.StartInfo.UseShellExecute = false;
            p.StartInfo.WindowStyle = ProcessWindowStyle.Normal;
            p.Start();
            p.WaitForInputIdle();
            RefreshProcessInfo();
        }

        private void BtnStop_Click(object sender, RoutedEventArgs e)
        {
            this.Cursor = Cursors.Wait;
            Process[] myprocesses;
            myprocesses = Process.GetProcessesByName(fileName);
            foreach (Process p in myprocesses)
            {
                using (p)
                {
                    p.CloseMainWindow();
                    Thread.Sleep(1000);
                    p.WaitForExit();
                }
            }
            fileIndex = 0;
            RefreshProcessInfo();
            this.Cursor = Cursors.Arrow;

        }
        private void RefreshProcessInfo()
        {
            dataGrid1.ItemsSource = null;
            list.Clear();
            Process[] processes = Process.GetProcessesByName(fileName);
            foreach (Process p in processes)

            {
                list.Add(new Data() {
                   Id = p.Id,
                   ProcessName = p.ProcessName,
                   TotalMemory = string.Format("{0,10:0} KB" ,p.WorkingSet64 / 1024d),
                   StartTime=p.StartTime.ToString("yyyy-M-d HH:mm:ss"),
                   FileName=p.MainModule.FileName
                });

            }
            dataGrid1.ItemsSource = list;
        }
    }
    public class Data
    {
        public int Id { get; set; }
        public string ProcessName { get; set; }
        public string TotalMemory { get; set; }
        public string StartTime { get; set; }
        public string FileName { get; set; }
    }
}

实验结果

实验结果能启动多个进程，并停止所有进程

通过本实验，对Process类的使用，启动进程，停止进程，获取所有进程信息，获取指定进程信息，更加熟练和掌握了进程管理知识。