用C#实现简单的控件数组

Button[] btns = new Button[9];
private void ShowButtonArray()
{
for(int i = 0; i < 9; i++)
{
btns[i] = new Button();

//这一句往往为初学者忽视，须知要创建对象的实例！
btns[i].Location = 
new System.Drawing.Point(100 + 50 * (i % 3),100 + 50 * (i / 3));
btns[i].Name = "btnTest";
btns[i].Size = new System.Drawing.Size(48, 48);
btns[i].Text = i.ToString();
btns[i].Click += new System.EventHandler(this.btns_Click);

//统一的事件处理
this.Controls.Add(btns[i]);//在窗体上呈现控件
}
}
private void btns_Click(object sender, System.EventArgs e)
{
MessageBox.Show(((Button)sender).Text + " was clicked !");
//通过sender判断激发事件的控件
}
private void Form1_Load(object sender, System.EventArgs e)