XAML 中无法通过 DataContext 访问结构变量

Question

我正在尝试创建一个应用程序来打印出特定进程以及有关它们的一些信息（la Process Explorer）。我以前通过访问 system.processes 并将进程存储到数组中并将其馈送到 DataContext（this.DataContext = 数组）来工作。我尝试切换到使用 WMI 来访问命令行参数，现在进程进入了我的 ListView，但每个进程的信息都没有显示。

我的代码：

我在 C# 中查找进程并存储其信息的函数：

public struct Processes
{
    public string processID;
    public string commandLine;
    public string name;
}    
public void FindTestProcesses()
    {

        List<Processes> processList = new List<Processes>();
        Processes currentProcess = new Processes();

        ManagementClass mgmtClass = new ManagementClass("Win32_Process");
            foreach (ManagementObject process in mgmtClass.GetInstances())
            {
                // Basics - process name & pid
                string processName = process["Name"].ToString().ToLower();
                if (Regex.IsMatch(processName, @"(jtest)|(java)|(testrunner)"))
                {
                    currentProcess.name = processName;
                    System.UInt32 pid = (System.UInt32)process["ProcessId"];
                    currentProcess.processID = pid.ToString();

                    // Get the command line - can be null if we don't have permissions
                    string cmdLine = null;
                    if (process["CommandLine"] != null)
                    {
                        cmdLine = process["CommandLine"].ToString();
                        currentProcess.commandLine = cmdLine;
                    }
                    Debug.WriteLine("{0,6} - {1} - {2}", pid, processName, cmdLine);
                    processList.Add(currentProcess);
                }
            }
            foreach (Processes process in processList)
            {
                ListViewItem item = new ListViewItem();

            }
            this.DataContext = processList.ToArray(); 
    }

还有我的XAML：

<Window x:Class="UnitTestViewer.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Unit Test Viewer" Height="350" Width="700">
<Grid Background="Gray">
    <ListView ItemsSource="{Binding}" Margin="0,0,0,29">
        <ListView.View>
            <GridView>
                <GridViewColumn Header="name" DisplayMemberBinding="{Binding name}"/>
                <GridViewColumn Header="processID" DisplayMemberBinding="{Binding processID}"/>
                <GridViewColumn Header="commandLine" DisplayMemberBinding="{Binding commandLine}"/>
            </GridView>
        </ListView.View>
    </ListView>
    <Canvas>
        <Button Name="refreshButton" BorderThickness="1" BorderBrush="Black" Click="RefreshProcesses" ClickMode="Release" Canvas.Right="6" Canvas.Bottom="4">Refresh</Button>
    </Canvas>
</Grid>

我不明白为什么 DisplayMemberBinding 不再显示。

Answer 1

绑定指的是属性而不是索引器...所以 {binding name} 会查找 process.name 而不是 process["name"]

Answer 2

XAML 数据绑定设计用于处理属性，我不确定它是否支持字段。

尝试更改 Processes class 声明以使用属性：

public struct Processes
{
     public string processID {get; set;}
     public string commandLine {get; set;}
     public string name {get; set;}
}

XAML 中无法通过 DataContext 访问结构变量

Unable to access struct variables through DataContext in XAML

c#

wmi

xaml