Windows PowerShell is a shell for task automation and configuration management. The shell is based on the .NET framework and it includes a command-line shell and a scripting language. Features include built-in commands (cmdlets) to manage computers in your network. Cmdlets perform common system administration tasks such as managing the registry; managing event logs; controlling services and processes; and using Windows Management Instrumentation.
Apart from shell's cmdlets, there is also flexibility to use C# code, because the shell is based on .Net framework. In this post I demonstrate a way to call inline C# code from the PowerShell script. Following is the script to do so.
$Source = @"
public static class MyClass
public static string GetMessage()
return "Text from C#";
public static int Add(int a, int b)
return a + b;
Add-Type -TypeDefinition $Source -Language CSharp
Let review this script:
- The first statement here you see that we put our C# code in a variable named $source (in PowerShell we define variable by placing $ sign with it).
- Next we call PowerShell cmdlet Add-Type, here we define -TypeDefinition is our C# class code, and telling the shell that this script is actually C# code defined by the argument -Language CSharp
Now its the time to actually call our code and that is pretty straight forward.
- [TestNamespace.MyClass]::GetMessage() will call our Method which only returns a string.
- [TestNamespace.MyClass]::Add(3, 5) will accept two integer parameters and return the output as integer.