How to check if PowerShell is installed or not using C#

Question

I want to write a C# method like

public bool PowershellExists()
{
    // Returns true if PowerShell exists on the machine, else false.
}

http://blogs.msdn.com/b/powershell/archive/2009/06/25/detection-logic-poweshell-installation.aspx + `Registry.GetValue` — Mitch, Apr 30 '14 at 04:04
Checking the registry is a C# method. StackOverflow is not a tool for turning documentation into code. If you don't understand registry or how to access it, you should research that. — Mitch, Apr 30 '14 at 04:06

score 9 · Accepted Answer · edited Jun 10 '15 at 21:47

9

Using the MSDN blog post Detection logic for PowerShell installation, I have written the method like:

public bool PowershellExists()
{
    string regval = Microsoft.Win32.Registry.GetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PowerShell\1", "Install", null).ToString();
    if (regval.Equals("1"))
        return true;
    else
        return false;
}

edited Jun 10 '15 at 21:47

Peter Mortensen

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answered Apr 30 '14 at 04:04

Mohammad Nadeem

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can it also tell the Version ? or can we modify it to somehow get the Version Info ? – N.K Jul 13 '17 at 07:05
@N.K if you follow the link there is another key that let you know the version : HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PowerShell\1\PowerShellEngine - in more recent version, you can look in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PowerShell\3\PowerShellEngine – Matthieu Oct 12 '18 at 20:35

How to check if PowerShell is installed or not using C#

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