Trouble running C# code in VS Code: Getting scriptcs error

This is my first time using Visual Studio Code and I am trying to run a simple code on it but it is giving me an error that says:

'scriptcs' is not recognized as an internal or external command, operable program or batch file.

I have this as code:

using System;

struct Employee{
   public int Id { get; set; }
   public string FullName { get; set; }
}

public class MyClass{
 public static void Main(){
   Employee obj= new Employee();
   obj.FullName = "Hello World";
   Console.WriteLine(obj.FullName);
  }
}

I have tried installing the Scriptcs Runner, but still the same issue. Can anybody suggest something else?

Edit:

After many of your suggestions I tried the following:

• Created an entire new folder without spaces and named the files the same way.
• Re-installed the scriptcs Runner extension from VS Code Extension manager.
• Doubled checked my code. It is running on online c# compiler, but not in VS Code.

Problem is still the same. Getting the above error.