C # parameter transfer between forms (interoperability)

For example, if form1 wants to open a form and press a button in the form to change the title of the first form.

The procedure is as follows:

Form1: button click event --

Code
Private   Void Button#click ( Object Sender, eventargs E)
{
Form2 FM2= NewForm2 (This);//Pass this over
Fm2.show ();
}

Form2:

Code
Public   Partial   Class Option: Form
{
Form1 F1 =   Null ;
Public Option (form1 form)
{
Initializecomponent ();
F1=Form;
}
}

  Private   Void Button#click ( Object Sender, eventargs E)
{
F1.text="Content to be set"//In this way, you can change the content in form1 in form2.
}