调用PowerShell与C＃ [英] Calling PowerShell From C#

问题描述

我使用 System.Management.Automation DLL，让我对我的C＃应用​​程序中调用PowerShell中，像这样：

I am using System.Management.Automation DLL which allows me to call PowerShell within my C# application like so:

PowerShell.Create().AddScript("Get-Process").Invoke();

我所试图做的是调用PowerShell的，但提供输入列表。例如，在

What I am trying to do is call PowerShell but supply the input list. For example, in:

1, 2, 3 | ForEach-Object { $_ * 2 }

我想提供左侧 1，2，3时调用：

// powershell is a PowerShell Object
powershell.Invoke(new [] { 1, 2, 3 });

然而，这是行不通的。在解决方法我想出了用的foreach对象，然后传递数组作为 InputObject 与 {$ _} 为过程：

However this does not work. The workaround I came up with was using ForEach-Object and then passing the array as an InputObject with the { $_ } as the Process:

// create powershell object
var powershell = PowerShell.Create();

// input array 1, 2, 3
Command inputCmd = new Command("ForEach-Object");
inputCmd.Parameters.Add("InputObject", new [] { 1, 2, 3 });
inputCmd.Parameters.Add("Process", ScriptBlock.Create("$_"));
powershell.Commands.AddCommand(inputCmd);

// ForEach-Object { $_ * 2 }
Command outputCmd = new Command("ForEach-Object");
outputCmd.Parameters.Add("Process", ScriptBlock.Create("$_ * 2"));
powershell.Commands.AddCommand(outputCmd);

// invoke
var result = powershell.Invoke();

虽然上述工作code是有使用调用传球输入数组中，因为我会虽然，这将是调用的可取方式中的任何方式呢？

Although the above is working code is there any way of using Invoke passing in the input array because I would have though that this would be desirable way of calling it?

推荐答案

一个有点晚，但是：

    PowerShell ps = PowerShell.Create();
    ps.Runspace.SessionStateProxy.SetVariable("a", new int[] { 1, 2, 3 });
    ps.AddScript("$a");
    ps.AddCommand("foreach-object");
    ps.AddParameter("process", ScriptBlock.Create("$_ * 2"));
    Collection<PSObject> result = ps.Invoke();
    foreach (PSObject result in results)
                {
                    Console.WriteLine(result);
                }

返回exactely：

returns exactely:

2
4
6

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