将表单传递给用户控件会破坏设计器

我有一个用户控件(section1)，我需要将引用传递给我的主表单(Form1)。问题是，每当我将表单作为参数传递给section1的构造函数时，它就会破坏设计器并得到错误:

 Type 'M.section1' does not have a constructor with parameters of types Form.    
 The variable 's1' is either undeclared or was never assigned.  

Form1.Designer.cs

 this.s1 = new M.section1(this); // this is the line that causes the problem

section1.cs用户控件

public partial class section1 : UserControl
{
    private Form1 f { get; set; }
    public section1(Form1 frm) // constructor 
    {
         f = frm;
    }
}

很奇怪，即使当我在设计器中打开Form1时，它给了我错误，它编译得很好，参考实际上有效，我可以从用户控件访问Form1。有什么建议吗?谢谢!

public partial class section1 : UserControl
{
    private Form1 f { get; set; }
    public section1() // designer calls this
    {
        InitializeComponent(); //I hope you haven't forgotten this
    }
    public section1(Form1 frm) : this() //call default from here : at runtime
    {
         f = frm;
    }
}

public section1(Form1 frm = null)
{
    f = frm;
}