从c#运行Powershell脚本出错

我有一个ps1脚本，当它从powershell执行时运行良好。在Office365中创建一个用户:

Param(
  [string]$adminUser,
  [string]$password,
  [string]$adminSite,
  [string]$userDisplayName,
  [string]$userFirstName,
  [string]$userLastName,
  [string]$userPrincipalName,
  [string]$userLicense,
  [string]$userOffice,
  [string]$userDepartment
)
try {
    [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client")
    [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client.Runtime")
    
    $executionPolicy = Get-ExecutionPolicy
    Set-ExecutionPolicy RemoteSigned
    
    $secpasswd = ConvertTo-SecureString $password -AsPlainText -Force
    $credential = New-Object System.Management.Automation.PSCredential($adminUser,$secpasswd)
    Connect-MSolService -Credential $credential
    #Write-Host "Conected to MSolService ..." -ForegroundColor Green 
    Connect-SPOService -Url $adminSite -Credential $credential # Here fail when running from .NET
    #Write-Host "Conected to SP Online ..." -ForegroundColor Green
    
    $user = New-MsolUser -FirstName $userFirstName -LastName $userLastName -UserPrincipalName $userPrincipalName -DisplayName $userDisplayName -LicenseAssignment $userLicenseAssignment -Office $userOffice -Department $userDepartment -UsageLocation ES
}catch [Exception] {
    #Write-host "An Exception ocurred. The proccess is uncompleted" -ForegroundColor Red
    #Write-Host $_.Exception.Message -ForegroundColor Red
    Set-ExecutionPolicy $executionPolicy
    return $false
}
Set-ExecutionPolicy $executionPolicy
    return $user

它的工作原理。但是，我有一个c#程序以这种方式执行此脚本:

private Collection<PSObject> RunPsScriptFromFile(string psScriptPath, Dictionary<string, Object> parameters) {
  if (!File.Exists(psScriptPath)) {
    throw new FileNotFoundException("File not found.", psScriptPath);
  }
  Collection<PSObject> returnObjects = null;
  using (Runspace runSpace = RunspaceFactory.CreateRunspace()) {
    runSpace.Open();
    RunspaceInvoke runSpaceInvoker = new RunspaceInvoke(runSpace);
    Pipeline pipeLine = runSpace.CreatePipeline();
    Command cmd = new Command(psScriptPath, false);
    if (parameters != null && parameters.Count > 0) {
      foreach (KeyValuePair<string, Object> p in parameters) {
        CommandParameter cp = new CommandParameter(p.Key, p.Value);
        cmd.Parameters.Add(cp);
      }
    }
    pipeLine.Commands.Add(cmd);
    returnObjects = pipeLine.Invoke();
  }
  return returnObjects;
}

这个程序可以很好地与其他脚本一起工作，但是对于这个脚本，我得到以下错误(在脚本中标记的行):

在'Microsoft.Online.SharePoint '模块中找到'Connect-SPOService'命令。PowerShell'，但无法加载该模块。更多信息，请运行'Import-Module Microsoft.Online.SharePoint.PowerShell'。

我发现了一个问题，但没有答案:从c#代码运行ps1出错(Office 365)