class Screen : Form
{
    public Screen()
        {
            CreateInput(400, 100);
            CreateInput(400, 300);
        }

        private void CreateInput(int x, int y)
        {
            Label t = new Label();
            TextBox i = new TextBox();
            t.Location = new Point(x, y);
            i.Location = new Point(x + 50, y);
            this.Controls.Add(i);
            this.Controls.Add(t);
        }
}