Check if Powershell Module is installed in C#

Question

Is it possible to check if a powershell module ist installed in C#?

I need a C# condition if a module is / or is not installed.

I know how to use powershell in C#, but how become a response from Powershell?

Thanks for reading my question and i hope anyone can give me some hints.

Reza Aghaei · Accepted Answer · 2020-10-05 05:42:32Z

5

You can add a reference to System.Management.Automation and use the PowerShell to invoke Get-Module cmdlet to check if a specific module has been installed:

var exists = false;
using (PowerShell ps = PowerShell.Create())
{
    string moduleName = "something";
    ps.AddScript($"Get-Module -ListAvailable -Name {moduleName}");
    var result = ps.Invoke();
    exists = result.Count > 0;
}

Note: To add a reference to System.Management.Automation, you can install the NuGet package using Install-Package System.Management.Automation.dll Or if you want to see where the dll is located on your system, using powershell console, you can see [PSObject].Assembly.Location and pick it.

edited Oct 5, 2020 at 5:42

answered Jun 11, 2018 at 10:06

Reza Aghaei

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8 Comments

Marcus Over a year ago

In your answer is an issue. result.Count is an Property not a method ;-)

Reza Aghaei Over a year ago

In fact I used the linq Count() extension method which is usable when you have using System.Linq;

Marcus Over a year ago

result.Count is a Property not a method

Marcus Over a year ago

Oh ha. Thanks! My misstake.

Lajos Arpad Over a year ago

@Marcus you might want to accept this answer if it solved your problem.

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