动态按钮的颜色问题
button1,button2都是动态生成的．窗体里有一个我事先设好的button3．我想通过点击button3来实现对button1,button2的颜色改变．比如，我选择button1，点击button3后button1的颜色就变为红色了．

[解决办法]
测试的整个代码就这样，改变颜色没问题的，你自己在button6的Click方法btnobj.BackColor = Color.Yellow这一句之前先重置其他按钮的颜色，这样就能起到点哪个变哪个，剩下按钮自动变回原来的颜色的效果了。

C# code

    public partial class Form1 : Form    {        private Button btnobj;        List<Button> btnList = new List<Button>();        private int count = 1;        public Form1()        {            InitializeComponent();        }        private void DymaControlMouseDown(object sender, EventArgs e)        {            Button btn = sender as Button;            btn.BackColor = Color.Red;            btnobj = btn;        }        private void button4_Click(object sender, EventArgs e)        {            count = ++count;            int i = btnList.Count;            i++;            Button btn = new Button();            btn.BackColor = Color.Blue;            btn.Text = "";            btn.Size = new Size(50, 60);            this.toolTip1.SetToolTip(btn, "位置" + (i + 3));            btn.Click += new EventHandler(DymaControlMouseDown);            btnList.Add(btn);            if (i % 3 == 1)            {                btnList[i - 1].Location = new Point(21, 25 + ((i + 2) / 3 * 75));            }            else                if (i % 3 == 2)                {                    btnList[i - 1].Location = new Point(130, 25 + ((i + 1) / 3 * 75));                }                else                {                    if (i % 3 == 0)                        btnList[i - 1].Location = new Point(240, 25 + i / 3 * 75);                }            this.panel1.Controls.Add(btn);        }        private void button6_Click(object sender, EventArgs e)        {            btnobj.BackColor = Color.Yellow;        }    }