Use Constructor to initialize member variables : Constructor « Class « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Class
3. Constructor

using System;

class MyClass
{
  public int[] MyIntArray;
  public int Y;
  public int ObjectCount = 0;
  
  public MyClass()
  {
    MyIntArray = new int[10];
    //Do work necessary during object creation
  }
  //Overloads the MyClass allowing you to initialize Y
  public MyClass(int myY)
  {
    Y = myY;
  }
}

class MainClass{
  static void Main(string[] args)
  {
    MyClass X = new MyClass();

    X.ObjectCount++;

    MyClass YY = new MyClass(10);
  }

}