获取应用程序首次运行表格

Question

I have two Forms in a project. When my application runs, Form1 is opened. After that I am opening Form2 .

How can I access Form1 from Form2 with reflection?

Answer 1

Why would you want to use reflection for this?

When you create the second form, just pass in a reference to the first one:

// I assume it's code within Form1 which opens Form2
Form2 form2 = new Form2(this);
form2.Show();

That's assuming you're happy to add a constructor with Form2 as a parameter. Alternatively, make it a property in Form2 :

Form2 form2 = new Form2 { Form1 = this };
form2.Show();

Answer 2

如果仅打开一个Form2 f2 = Application.OpenForms["Form2"];实例，您也可以这样做： Form2 f2 = Application.OpenForms["Form2"];