C # Runspace Powershell (Interactive)

Question

I am trying with C # to execute a Powershell file with parameters in the execution space. Unfortunately, I get the following output:

The command requesting the user failed because the host program or command type does not support user interaction. Try a host program that supports user interaction, such as the Windows PowerShell Console or Windows PowerShell ISE, and remove the prompt-related commands from command types that do not support user interaction, such as Windows PowerShell workflows.

What could I do?

Current C # code. To do this, execute the commands that will be in the PS file and return the json string.

public string ExecuteCommandDirect(int psId, string psMaster, string psFile)
{
    String FullPsFilePath = @"C:\CloudPS\" + psFile + ".ps1";

    String PsParameters = FullPsFilePath + " -psId " + psId + " -psMaster " + psMaster + " -NonInteractive";

    // Create Powershell Runspace
    Runspace runspace = RunspaceFactory.CreateRunspace();

    runspace.Open();

    // Create pipeline and add commands
    Pipeline pipeline = runspace.CreatePipeline();
    pipeline.Commands.AddScript(PsParameters);

    // Execute Script
    Collection<PSObject> results = new Collection<PSObject>();
    try
    {
        results = pipeline.Invoke();
    }
    catch (Exception ex)
    {
        results.Add(new PSObject((object)ex.Message));
    }

    // Close runspace
    runspace.Close();

    //Script results to string
    StringBuilder stringBuilder = new StringBuilder();
    foreach (PSObject obj in results)
    {
        Debug.WriteLine(obj);
        stringBuilder.AppendLine(obj.ToString());
    }

    return stringBuilder.ToString();

}

PS code:

param([int]$psId = 0, [string]$psMaster = 'localhost');

$date = Get-Date -Format 'h:m:s' | ConvertTo-Json;

Write-Host $date;

exit;

Answer 1

script, , write-host, pshost, "" , ( - , .) . :

powershell, , Write-Host?

Answer 2

Write-Output Write-Host

Answer 3

Read-Host Write-Host, . , Write-Host, Read-Host. powershell .

        string readHostOverride = @"
            function Read-Host {
                param(
                    [string]$Prompt
                )



                $StartInfo = New-Object System.Diagnostics.ProcessStartInfo
                #$StartInfo.CreateNoWindow = $true 
                $StartInfo.UseShellExecute = $false 
                $StartInfo.RedirectStandardOutput = $true 
                $StartInfo.RedirectStandardError = $true 
                $StartInfo.FileName = 'powershell.exe' 
                $StartInfo.Arguments = @(""-Command"", ""Read-Host"", ""-Prompt"", ""'$Prompt'"")
                $Process = New-Object System.Diagnostics.Process
                $Process.StartInfo = $StartInfo
                [void]$Process.Start()
                $Output = $Process.StandardOutput.ReadToEnd() 
                $Process.WaitForExit() 
                return $Output.TrimEnd()
            }
        ";

        string writeHostOverride = @"
            function Write-Host {
            }
        ";

        Run(readHostOverride);
        Run(writeHostOverride);

Run(), , powershell.

, Write-Host; , .

For commentators suggesting switching to Write-Output instead of Write-Host, this is NOT a solution for many use cases. For example, you do not want your user notifications to arrive in your output stream.

If you need to use the source cmdlets, use this:

Microsoft.PowerShell.Utility\Read-Host -Prompt "Enter your input"