Initializer Block are unnamed blocks of code shared between constructors. Java compiler copies them to each constructor.
In C#, we merge initializer blocks to a new method and call this method in every constructor. If class has no constructor, we create a default one.

[Java]

public class Location
{
    int x;
    int y;
    
    {
        x = 0;
    }
    
    public void Reset
    {
    }
    
    {
        y = 100;
    }
}

[C#]

public class Location
{
    int x;
    int y;
    public Location()
    {
        InitLocation();
    }
    public void Reset
    {
    }
    private void InitLocation()
    {
        x = 0;
        y = 100;
    }
}