它不起作用，因为列表是空的。试试这个：

 私人无效的button1_Click（对象发件人，EventArgs的发送）
{
    清单＆LT;按钮和GT;按钮=新的List＆LT;按钮和GT;（）;
    的for（int i = 0;我小于10;我++）
    {
        按钮newButton =新按钮（）;
        buttons.Add（newButton）;
        this.Controls.Add（newButton）;
    }
}
 

I want to create 10 buttons on my form when I click on button1. No error with this code below but it doesnt work either.

private void button1_Click(object sender, EventArgs e)
{
    List<Button> buttons = new List<Button>();
    for (int i = 0; i < buttons.Capacity; i++)
    {
        this.Controls.Add(buttons[i]);   
    }
}

It doesn't work because the list is empty. Try this:

private void button1_Click(object sender, EventArgs e)
{
    List<Button> buttons = new List<Button>();
    for (int i = 0; i < 10; i++)
    {
        Button newButton = new Button();
        buttons.Add(newButton);
        this.Controls.Add(newButton);   
    }
}