C# winform怎么循环操作Button按钮

Question

我窗体有18个按钮，名字是button1....button18
我想循环着将他们颜色更改为绿色怎么搞

Answer 1

            for (int i = 1; i < 9; i++)
            {
                Button btn = this.Controls["Button" + i.ToString()] as Button;
                btn.ForeColor = Color.Green;
            }

Answer 2

            foreach (Control ctrl in this.Controls)
            {
                if (ctrl is Button)
                {
                    ((Button)ctrl).BackColor = Color.Green;
                }
            }