如何获得自定义组件的容器？

are you sure the container is form? look at the source code,public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Timer timer1;
private System.Windows.Forms.ImageList imageList1;
private System.ComponentModel.IContainer components;
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.button1 = new System.Windows.Forms.Button();
this.timer1 = new System.Windows.Forms.Timer(this.components);
this.imageList1 = new System.Windows.Forms.ImageList(this.components);