从C＃使用Invoke-SqlCmd cmdlet执行PowerShell脚本

Question

I need to execute a simple PS script that contains a Invoke-Sqlcmd cmdlet from a C# app. When the script is executed through the PS window it works fine. In the C# app nothing happens.

I've tried other scripts from the C# app and got results, but with this specific script something went wrong.

using (var powerShell = PowerShell.Create())
            {
                powerShell.AddScript(psScript);
                powerShell.AddParameter("Username", "user");
                powerShell.AddParameter("Password", "password");
                powerShell.AddParameter("Server", server);
                powerShell.AddParameter("Script", script);

                var result = powerShell.Invoke();
            }

PS script:

param ([String]$Username, [String]$Password, [String]$Server, [String]$Script)

Import-Module SqlPs

Invoke-Sqlcmd -ServerInstance $Server -Username $Username -Password $Password -Query $Script -QueryTimeout 750 -ConnectionTimeout 600

Does anyone know how to solve the problem?

Answer 1

After adding some some error logging code to your function:

        foreach (var error in powerShell.Streams.Error)
        {
           Console.WriteLine("Error: {0}", error);
        }

It printed an issue saying your parameters were not reaching the script. After some digging around I found this SO post on how to pass parameters to Powershell:

Execute PowerShell Script from C# with Commandline Arguments

Cut down version of that solution here:

        using (Runspace runspace = RunspaceFactory.CreateRunspace(RunspaceConfiguration.Create()))
        {
            runspace.Open();

            using (Pipeline pipeline = runspace.CreatePipeline())
            {
                Command scriptCommand = new Command(psScript);
                scriptCommand.Parameters.Add(new CommandParameter("Username", "user"));
                scriptCommand.Parameters.Add(new CommandParameter("Password", "password"));
                scriptCommand.Parameters.Add(new CommandParameter("Server", server));
                scriptCommand.Parameters.Add(new CommandParameter("Script", script));
                pipeline.Commands.Add(scriptCommand);

                var results = pipeline.Invoke();

                foreach (var item in results)
                {
                    Console.WriteLine("Output: {0}", item);
                }
            }
        }

As mentioned by @bymyself, if your running into issues with exception:

Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information.

Try adding this to your app.config (for a Console app):

<startup useLegacyV2RuntimeActivationPolicy="true"> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" /> </startup>

If your using MSTest, try the solution at: http://reedcopsey.com/2011/09/15/setting-uselegacyv2runtimeactivationpolicy-at-runtime/