C# Online Compiler | .NET Fiddle

using System;
					
public class A
{
  static A()
  {
    Console.WriteLine("Static A Constructor");
  }
  public static void display()
  {
    Console.WriteLine("Display the Static Method of A Class");
  }
}
public class B
{
  static B()
  {
    Console.WriteLine("Static B Constructor");
  }
  public static void display()
  {
    Console.WriteLine("Display the Static Method of B Class");
  }
}

public class StaticConstructorExample
{
  public static void Main()
  {
    A.display();
    Console.WriteLine();
    B.display();
  }
}

 
using System;
                    
public class A
{
  static A()
  {
    Console.WriteLine("Static A Constructor");
  }
  public static void display()
  {
    Console.WriteLine("Display the Static Method of A Class");
  }
}
public class B
{
  static B()
  {
    Console.WriteLine("Static B Constructor");
  }
  public static void display()
  {
    Console.WriteLine("Display the Static Method of B Class");
  }
}
​
public class StaticConstructorExample
{
  public static void Main()
  {
    A.display();
    Console.WriteLine();
    B.display();
  }
}
​