我终于找到了实现我所需要的方法。 
 首先,我创建了一个powershell脚本来导入我的模块和模块脚本文件 
 ShellInitScript 
function Get-ScriptDirectory
{
    $Invocation = (Get-Variable MyInvocation -Scope 1).Value
    Split-Path $Invocation.MyCommand.Path
}
$MyModuleDirectory = Get-ScriptDirectory
Set-Location $MyModuleDirectory 
Import-Module .\MyModule.psd1
 MyModule.psd1 
@{
GUID                = "[GENERATE A GUID HERE]" # Generate using $myGuid = [guid]::NewGuid() 
Author              = "Me"
CompanyName         = "My Company"
Copyright           = "© My Company. All rights reserved."
ModuleVersion       = "1.0.0.0"
ModuleToProcess     = "MyModule.psm1"
}
 MyModule.psm1 
Import-Module .\MyModuleCSharpAssembly.dll
function Enable-MyShellRemoting([switch]$Force)
{
    $proceed = 0
    if($Force -eq $false)
    {
        Write-Warning "Enable-MyShellRemoting restarts the WinRM service and all dependent services.`r`nAll WinRM sessions connected to Windows PowerShell session configurations are disconnected."
        $title = "Are you sure you want to perform this action?"
        $message = "Performing this operation will allow selected users to remotely run MyModule commands on this computer."
        $yes = New-Object System.Management.Automation.Host.ChoiceDescription "&Yes"
        $no = New-Object System.Management.Automation.Host.ChoiceDescription "&No"
        $options = [System.Management.Automation.Host.ChoiceDescription[]]($yes, $no)
        $proceed = $Host.UI.PromptForChoice($title, $message, $options, 0) 
    }
    if($proceed -eq 0)
    {
        Enable-PSRemoting -Force
        if((Get-WmiObject Win32_ComputerSystem).PartOfDomain -eq $false){
            Set-Item WSMan:\localhost\Client\TrustedHosts *
            Restart-Service WinRM
        }
        $path = Join-Path -Path $MyModuleDirectory  -ChildPath "ShellInitScript.ps1"
        Register-PSSessionConfiguration -Name "MyShellUri" -StartupScript $path -Force
    }
}
function Disable-MyShellRemoting([switch]$Force, [switch]$DisablePSRemoting)
{
    $proceed = 0
    if($Force -eq $false)
    {
        Write-Warning "Disable-MyShellRemoting restarts the WinRM service and all dependent services.`r`nAll WinRM sessions connected to Windows PowerShell session configurations are disconnected."
        $title = "Are you sure you want to perform this action?"
        $message = "Performing this operation will prevent all users to remotely run MyModule commands on this computer.`r`nUse the the -DisablePSRemoting switch to disable all PowerShell remoting features."
        $yes = New-Object System.Management.Automation.Host.ChoiceDescription "&Yes"
        $no = New-Object System.Management.Automation.Host.ChoiceDescription "&No"
        $options = [System.Management.Automation.Host.ChoiceDescription[]]($yes, $no)
        $proceed = $Host.UI.PromptForChoice($title, $message, $options, 0) 
    }
    if($proceed -eq 0)
    {
        if($DisablePSRemoting)
        {
            Disable-PSRemoting
        }
        if((Get-PSSessionConfiguration -Name "MyShellUri" -ErrorAction SilentlyContinue) -eq $null){
            Write-Host "The session configuration MyShellUri is already unregistered."
        }
        else {        
            Unregister-PSSessionConfiguration -Name "MyShellUri" -Force -ErrorAction Ignore
        }
    }
}
function Test-MyShellRemote()
{
    return "Test completed"
}
 dll MyModuleCSharpAssembly.dll只是一个包含自定义Cmdlet的常规.Net程序集。 
 该问题的解决方案是在函数Enable-MyShellRemoting中,此方法启用powershell远程处理,并使用加载模块的statup脚本注册自定义Powershell会话配置。 
 然后在C#中我们必须这样做,就像这样在连接对象中指定ShellUri 
WSManConnectionInfo connectionInfo = new WSManConnectionInfo();
connectionInfo.ComputerName = "MyComputer";
connectionInfo.ShellUri = "http://schemas.microsoft.com/powershell/MyShellUri";
using (Runspace remoteRunspace = RunspaceFactory.CreateRunspace(connectionInfo))
{
     remoteRunspace.Open();
     using (PowerShell shell = PowerShell.Create())
     {
          shell.Runspace = remoteRunspace;
          shell.AddCommand("Test-MyShellRemote");
          Collection<PSObject> results = shell.Invoke();
          //the results collection contains the string return by the command
     }
     remoteRunspace.Close();
 }