WPF数据绑定

xaml文件

<Window x:Class="WpfApplication2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:src="clr-namespace:WpfApplication2"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Grid.Resources>
            <src:PO x:Key="datas"></src:PO>
            <!--src表示数据源-->
            <DataTemplate x:Key="imgtemplate">
                <!--datatemplate表示数据的显示形式-->
                <TextBlock Foreground="Black" FontSize="12">                        
                        <TextBlock.Text>
                            <Binding Path="ProcessName"></Binding>
                        </TextBlock.Text>
                </TextBlock>
            </DataTemplate>
        </Grid.Resources>

        <ListBox ItemsSource="{StaticResource datas}" ItemTemplate="{StaticResource imgtemplate}" Margin="12,46,0,0" Name="listBox1" Height="231" VerticalAlignment="Top" HorizontalAlignment="Left" Width="120"/>
        
        <DataGrid ItemsSource="{StaticResource datas}"  AutoGenerateColumns="False" Height="231" HorizontalAlignment="Left" Margin="138,46,0,0" Name="dataGrid1" VerticalAlignment="Top" Width="353" HorizontalGridLinesBrush="#E6E5DFDF" VerticalGridLinesBrush="#E6E5DFDF">
            <DataGrid.Columns>
                <DataGridTextColumn Binding="{Binding Path=ProcessName}" CanUserReorder="False" CanUserResize="False" CanUserSort="False" Header="进程名" IsReadOnly="True" />
                <DataGridTextColumn Binding="{Binding Path=MemoryUsed}" CanUserReorder="False" CanUserResize="False" CanUserSort="False" Header="占用内存" IsReadOnly="True" />
            </DataGrid.Columns>
        </DataGrid>
        <Button Content="机器属性" Height="23" HorizontalAlignment="Left" Margin="263,8,0,0" Name="BTN" VerticalAlignment="Top" Width="75" Click="BTN_Click" />
        <Label Content="已用内存" Height="28" HorizontalAlignment="Left" Margin="21,12,0,0" Name="label1" VerticalAlignment="Top" Width="70" />
        <Label Content="已用内存" Height="28" HorizontalAlignment="Left" Margin="97,12,0,0" Name="label6" VerticalAlignment="Top" Width="70" />
        <TextBlock Height="23" HorizontalAlignment="Left" Margin="173,12,0,0" Name="textBlock1" Text="TextBlock" VerticalAlignment="Top" />

    </Grid>
</Window>

 .cs文件

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 System.Diagnostics;

namespace WpfApplication2
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        [System.Runtime.InteropServices.DllImportAttribute("user32.dll", EntryPoint = "MessageBoxA")]
        public static extern int MessageBoxA(
            [System.Runtime.InteropServices.InAttribute()] 
            System.IntPtr hWnd, 
            [System.Runtime.InteropServices.InAttribute()] 
            [System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.LPStr)] 
            string lpText, 
            [System.Runtime.InteropServices.InAttribute()] 
            [System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.LPStr)] 
            string lpCaption, 
            uint Type);

        [System.Runtime.InteropServices.DllImportAttribute("kernel32.dll", EntryPoint = "Beep")]
        [return: System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.Bool)]
        public static extern bool Beep(uint dwFreq, uint dwDuration);

        [System.Runtime.InteropServices.DllImportAttribute("winmm.dll", EntryPoint = "PlaySoundW")]
        [return: System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.Bool)]
        public static extern bool PlaySoundW([System.Runtime.InteropServices.InAttribute()] [System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.LPWStr)] string pszSound, System.IntPtr hmod, uint fdwSound);


        [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
        public struct MEMORYSTATUS
        {

            /// DWORD->unsigned int
            public uint dwLength;

            /// DWORD->unsigned int
            public uint dwMemoryLoad;

            /// SIZE_T->ULONG_PTR->unsigned int
            public uint dwTotalPhys;

            /// SIZE_T->ULONG_PTR->unsigned int
            public uint dwAvailPhys;

            /// SIZE_T->ULONG_PTR->unsigned int
            public uint dwTotalPageFile;

            /// SIZE_T->ULONG_PTR->unsigned int
            public uint dwAvailPageFile;

            /// SIZE_T->ULONG_PTR->unsigned int
            public uint dwTotalVirtual;

            /// SIZE_T->ULONG_PTR->unsigned int
            public uint dwAvailVirtual;
        }

        [System.Runtime.InteropServices.DllImportAttribute("kernel32.dll", EntryPoint = "GlobalMemoryStatus")]
        public static extern void GlobalMemoryStatus([System.Runtime.InteropServices.OutAttribute()] out MEMORYSTATUS lpBuffer);


        public MainWindow()
        {
            InitializeComponent();
        }

        private void BTN_Click(object sender, RoutedEventArgs e)
        {
            //MessageBoxA(IntPtr.Zero, "text", "caption",0);  //第一个参数要求是指针型，一般容易写成NULL，是不对的
            //Beep(100, 30);
            //PlaySoundW(@"D:\wpftestmusic\2.wav", IntPtr.Zero,1);
            MEMORYSTATUS mm = new MEMORYSTATUS();
            //unsafe
            //{
            //    int* p;
            //    int a = 10;
            //    p = &a;
            //    label1.Content = (*p).ToString();
            //    label1.Content = (int)p;    //强制将object转换为int型
                
            //}
            GlobalMemoryStatus(out mm);  //out，表示执行该函数后的返回结果是一个struct型，返回给了mm

            label6.Content = mm.dwMemoryLoad.ToString()+"%";  //已用内存占百分比


            Process[] p;
            p = System.Diagnostics.Process.GetProcesses();
            //dataGrid1.DataContext = p;
            //foreach (var i in p)
            //{
            //    textBlock1.Text += i.ToString();
            //}
            


        }

     
          
          

       

    }

    public class ProcessObject  //构造原型类
    {
        public string processname;
        public string memoryused;
        public ProcessObject()
        { }
        public ProcessObject(string value1,string value2)
        {
            this.processname = value1;
            this.memoryused = value2;
        }
        public string ProcessName
        {
            get { return processname; }
            set { processname = value; }
        }
        public string MemoryUsed
        {
            get { return memoryused; }
            set { memoryused = value; }
        }
    }
    public class PO : List<ProcessObject>   //将原型类初始化并赋值
    {
        public PO()
        {
            Process[] p;
            p = System.Diagnostics.Process.GetProcesses();
            foreach (var i in p)
            {
                Add(new ProcessObject(i.ProcessName, (i.PrivateMemorySize64).ToString())); //PrivateMemorySize64单位字节
            }
        }
    }
}