从 C# 运行 Powershell 会出现错误：`running scripts is disabled on this system`

Question

在我的 C# 应用程序中，我尝试创建一个 RunSpace 来调用一些 Powershell 脚本。但是，当它到达实际创建它的代码时，它会失败并出现以下错误：

var implementedHost = new implementedPSHost();
using (var rs = RunspaceFactory.CreateRunspace(customPSHost))
{

cannot be loaded because running scripts is disabled on this system. For more information, see about_Execution_Policies at https://go.microsoft.com/fwlink/?LinkID=135170.At line:1 char:3+ . .\Scripts\loadFunctions.ps1+

按照其他地方的建议，我运行了一个 Powershell 窗口并执行了Set-ExecutionPolicy -Scope CurrentUser -ExecutionPolicy Unrestricted，但这并没有帮助。错误仍然发生。有没有人知道如何解决这个问题？

Answer 1

尝试在运行空间中运行Set-ExecutionPolicy -Scope CurrentUser 步骤，如下所示。

首先，将此用户的 ExecutionPolicy 设置为 Restricted，然后在运行此代码时看到以下错误：

RunspaceConfiguration runspaceConfiguration = RunspaceConfiguration.Create();

            using (Runspace runspace = RunspaceFactory.CreateRunspace(runspaceConfiguration))
            {
                runspace.Open();
                RunspaceInvoke scriptInvoker = new RunspaceInvoke(runspace);
                //scriptInvoker.Invoke("Set-ExecutionPolicy Unrestricted -Scope CurrentUser ");
                Pipeline pipeline = runspace.CreatePipeline();
                Command scriptCommand = new Command("C:\\temp\\test.ps1");
                Collection<CommandParameter> commandParameters = new Collection<CommandParameter>();

                pipeline.Commands.Add(scriptCommand);
                Collection<PSObject> psObjects;
                psObjects = pipeline.Invoke();
            }


 RunspaceInvoke scriptInvoker = new RunspaceInvoke(runspace);
 scriptInvoker.Invoke("Set-ExecutionPolicy -Scope CurrentUser -ExecutionPolicy Unrestricted");

给我

System.Management.Automation.PSSecurityException: '文件 C:\temp\test.ps1 无法加载，因为在此系统上禁用了运行脚本。有关详细信息，请参阅 https://go.microsoft.com/fwlink/?LinkID=135170 上的 about_Execution_Policies。'

接下来，我重新运行它，取消注释这一行：

scriptInvoker.Invoke("Set-ExecutionPolicy Unrestricted -Scope CurrentUser ");

而且，没有错误！但是，这会改变用户的 ExecutionPolicy，我认为这是不好的行为，所以我将用它来包装我的函数，并将用户 ExecutionPolicy 设置回我找到它的方式。

using (Runspace runspace = RunspaceFactory.CreateRunspace(runspaceConfiguration))
            {
                runspace.Open();
                RunspaceInvoke scriptInvoker = new RunspaceInvoke(runspace);
                scriptInvoker.Invoke("$ExecutionPolicy = Get-ExecutionPolicy -Scope CurrentUser");
                scriptInvoker.Invoke("Set-ExecutionPolicy Unrestricted -Scope CurrentUser ");
                Pipeline pipeline = runspace.CreatePipeline();
                Command scriptCommand = new Command("C:\\temp\\test.ps1");
                Collection<CommandParameter> commandParameters = new Collection<CommandParameter>();

                pipeline.Commands.Add(scriptCommand);
                Collection<PSObject> psObjects;
                psObjects = pipeline.Invoke();
                scriptInvoker.Invoke("Set-ExecutionPolicy -Scope CurrentUser $ExecutionPolicy -Force");
            }

现在我们的功能可以正常工作了，我们不会篡改用户的系​​统设置。