如何在 C# 中读取 Powershell 脚本的 Write-Host 输出

Question

当运行 Powershell 中的脚本时，我可以接收 Write-Host 输出，但不能接收 C# 中的输出。
这是输出 Write-Host "HELLO WORLD TEST."
的代码应用程序在到达此行时失败：
Collection<PSObject> results = pipeline.Invoke();
我收到此错误消息：

HostException: A command that prompts the user failed because the host program or the command type does not support user interaction. Try a host program that supports user interaction, such as the Windows PowerShell Console or Windows PowerShell ISE, and remove prompt-related commands from command types that do not support user interaction, such as Windows PowerShell workflows

如何return Write-Host 的输出？提前致谢。

protected void Page_Load(object sender, EventArgs e) {

    if (!IsPostBack) {
        RunScript(@"C:\TestScript.ps1");
    }
}

private string RunScript(string scriptText) {

    Runspace runspace = RunspaceFactory.CreateRunspace();

    runspace.Open();

    Pipeline pipeline = runspace.CreatePipeline();
    pipeline.Commands.AddScript(scriptText);

    pipeline.Commands.Add("Out-String");

    Collection < PSObject > results = pipeline.Invoke();

    runspace.Close();

    StringBuilder stringBuilder = new StringBuilder();
    foreach(PSObject obj in results) {
        //do something
    }
    return Textbox.Text;
}

Answer 1

您可以像这样使用 PowerShell。创建一个实例并为您感兴趣的所有 Powershell 流添加侦听器：

private string RunScript(string scriptText)
{


    System.Management.Automation.PowerShell powerShellInstance = System.Management.Automation.PowerShell.Create();

powerShellInstance.Streams.Information.DataAdded += InformationHandler;

    powerShellInstance.Streams.Verbose.DataAdded += InformationalRecordEventHandler<VerboseRecord>;

    powerShellInstance.Streams.Debug.DataAdded += InformationalRecordEventHandler<DebugRecord>;

    powerShellInstance.Streams.Warning.DataAdded += InformationalRecordEventHandler<WarningRecord>;

    powerShellInstance.AddScript(scriptText);
                        powerShellInstance.Invoke();               
}

 static void InformationalRecordEventHandler<T>(object sender, DataAddedEventArgs e) 
        where T : InformationalRecord
    {
        var newRecord = ((PSDataCollection<T>)sender)[e.Index];
        if (!string.IsNullOrEmpty(newRecord.Message))
        {
            //STORE your message somewhere
        }
    }

static void InformationHandler(object sender, DataAddedEventArgs e)
    {
        var newRecord = ((PSDataCollection<InformationRecord>)sender)[e.Index];
        if (newRecord?.MessageData != null)
        {
            //STORE your message somewhere
        }
    }

如何在 C# 中读取 Powershell 脚本的 Write-Host 输出

How to read Write-Host output from Powershell script in C#

c#

powershell

runspace