從C＃中的powershell獲取var＃

Question

我在C＃中的Powershell中運行命令，並且需要讀取var的內容。我嘗試了所有我在網上找到的解決方案，但目前爲止還沒有成功。

這裏是我當前的代碼（有一些「嘗試」仍然包括）

string output; 

var nodePath = HttpContext.Server.MapPath("~/.bin/node.exe"); 
var mjmlFromStringCmd = HttpContext.Server.MapPath("~/.bin/mjmlFromString"); 
var mjmlTemplate = System.IO.File.ReadAllText(HttpContext.Server.MapPath("~/.bin/test.mjml")); 
var command = $"$htmlOutput = {nodePath} {mjmlFromStringCmd} -c '{mjmlTemplate}'"; 

var powershell = PowerShell.Create(); 
powershell.Commands.AddScript(command); 
var t = powershell.Invoke(); // I tired using powershell.Invoke()[0] because a post on SO said it might work, but the array returned by Invoke contains 0 elements 
var bf = powershell.Runspace.SessionStateProxy.PSVariable.Get("htmlOutput"); // I tried to get the var using two different methods, both give an empty value 
var htmlOutput = powershell.Runspace.SessionStateProxy.GetVariable("htmlOutput"); 
output = htmlOutput as string; 

，這裏是執行的PowerShell命令

$htmlOutput = C:\\Perso\\Websites\\FoyerRural\\.bin\\node.exe C:\\Perso\\Websites\\FoyerRural\\.bin\\mjmlFromString -c '****lots of content - MJML template (xml-style markup)****' 

如果我直接在PowerShell提示符下運行命令， $htmlOutput var獲得它的價值，我可以通過致電打印

$htmlOutput 

是否有一些與C＃＃powershell類錯過了？如何獲得C＃中powershell htmlOutput變量的值？

Answer 1

謝謝大家你的幫助，你把我放在正確的軌道上。這裏是最後的工作代碼

var nodePath = HttpContext.Server.MapPath("~/.bin/node.exe"); 
var mjmlFromStringCmd = HttpContext.Server.MapPath("~/.bin/mjmlFromString"); 
var mjmlTemplate = System.IO.File.ReadAllText(HttpContext.Server.MapPath("~/.bin/test.mjml")); 
var command = $"$htmlOutput = {nodePath} {mjmlFromStringCmd} -c '{mjmlTemplate}'"; 

var powerShell = PowerShell.Create(); 

powerShell.AddScript(command); 
powerShell.Invoke(); 
// GetVariable returns an "object", that is in fact an array of PSObjec 
var lines = ((object[]) powerShell.Runspace.SessionStateProxy.GetVariable("htmlOutput")).Cast<PSObject>(); 
// Agregate all returned PSObjec (each one of them being a line from the powershell output) and aggregate them into a string 
output = t.Aggregate(output, (current, item) => current + item.BaseObject.ToString()); 

花了大量的扭曲，但它確實有效。

Answer 2

我從來沒有這樣做過，但好像你不是誰都有這個問題只有一個，檢查出答案了在：

How to get value from powershell script into C# variable?

passing powershell variables to C# code within PS script