在.Net中保持Powershell运行空间打开 [英] Keeping Powershell runspace open in .Net

问题描述

我正在尝试从VB.Net内部运行一些PowerShell代码(如果您知道，C#编码器也可能会提供帮助！).
代码的第一部分，我需要使用密码连接到na-controller，并且需要保持连接打开.我还需要单击一个按钮来运行其他命令(获取文件，显示文件，删除特定的文件).
如何保持运行空间打开并分别运行每一行代码?我需要使用"CreateRunspacePool"吗?如果可以，该如何使用?

I'm trying to run some PowerShell code from within VB.Net (C# coders may also help if you know!).
The first part of the code, I need to connect to a na-controller with a password and I need to keep the connection open. I have other commands I need to run with a click of a button (get files, show files, delete specific ones).
How can I keep the runspace open and run each line of code separately? Do I need to use the "CreateRunspacePool"? If so, how do I use it?

我现在正在使用RunspaceStateInfo.State，但是我不知道保持连接打开的方法.我已经尝试过将Page_Load和Page_Init事件设置为仅打开一次，但沿行将其关闭.我确实删除了".Close"命令

I'm playing around now with the RunspaceStateInfo.State, but I don't know of a way to keep the connection open. I've tried the Page_Load and the Page_Init events to just have it open once, but somewhere along the line, it closes. I did remove the ".Close" command

推荐答案

您没有提供很多信息，但是从您谈论Page_Load和Page_Init的角度来看，我假设您正在尝试通过ASP.NET Web应用程序执行此操作.通过按下按钮并在运行空间上设置状态.

You have not provided a lot of info but from you talking about the Page_Load and Page_Init I am assuming you are trying to do this from an ASP.NET web application. By pressing buttons and setting state on the Runspace.

如果这是一个winforms应用程序，则可以简单地创建一个运行空间:

If this is a winforms application you can simply create a runspace:

Runspace runspace = RunspaceFactory.CreateRunspace(Host);

然后创建powershell实例并重复使用该运行空间:

And then create powershell instances and just reuse this runspace:

var ps1 = PowerShell.Create();
ps1.Runspace = runspace;
ps1.AddScript("Write-Host 'hello'")

var ps2 = PowerShell.Create();
ps2.Runspace = runspace;
ps2.AddScript("Write-Host 'world'")

您可以保留运行空间，并且只需在单击按钮之间针对同一运行空间运行脚本即可.

You can keep the runspace around and simply run scripts between button clicks against that same runspace.

如果您位于asp.net中，但情况有所不同，显然，每次单击按钮都会产生一个新线程，并且您将无法将运行空间保留在变量中，因此您需要执行诸如keep的操作在会话中如下所示:

If you are in asp.net however this is different, obviously each time you click a button a new thread is spawned and you will not be able to keep the runspace in a variable, so you would need to do something like keep it around in the session as follows:

protected PSHost Host
{
    get
    {

        if (this.Session["Host"] == null)
        {
            var host = new MyHost();
            this.Session["Host"] = host;
        }

        return (PSHost)this.Session["Host"];
    }
}


protected Runspace Runspace
{
    get
    {

        if (this.Session["Runspace"] == null)
        {
            var rs = RunspaceFactory.CreateRunspace(Host);
            this.Session["Runspace"] = rs;
            rs.Open();
        }

        return (Runspace)this.Session["Runspace"];
    }
}

然后我测试了该方法是否有效:

And then I tested that this works:

protected void Page_Load(object sender, EventArgs e)
{
    Button1.Click += new EventHandler(Button1_Click);
    Button2.Click += new EventHandler(Button2_Click);
    Button3.Click += new EventHandler(Button3_Click);
}

void Button3_Click(object sender, EventArgs e)
{
    var ps = PowerShell.Create();
    ps.Runspace = this.Runspace;
    ps.AddScript("$test | ft | out-string");
    var input = new List<object>();
    var output = new List<object>();
    ps.Invoke(input, output);
    TextBox1.Text = output.First().ToString();
}

void Button2_Click(object sender, EventArgs e)
{
    var ps = PowerShell.Create();
    ps.Runspace = this.Runspace;
    ps.AddScript("$test = 'world'");
    ps.Invoke();
}

void Button1_Click(object sender, EventArgs e)
{
    var ps = PowerShell.Create();
    ps.Runspace = this.Runspace;
    ps.AddScript("$test = 'hello'");
    ps.Invoke();
}

当我单击按钮1，然后单击按钮3时，它显示你好"，并且

When I click button 1 and then 3 it displays "Hello" and

当我单击按钮2，然后单击按钮3时，它显示世界"

When I click button 2 and then 3 it displays "World"

因此它成功地重用了运行空间.

So it sucesfully reused the runspace.

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