When I need to pass some information from a form to another I usually do the following:
Form2 form = new Form2(this);
form.ShowDialog();
And inside Form2.cs, I use a constructor like:
private Form1 parent;
public Form2(Form1 form)
{
...
parent = form;
}
This way I can get a information from a textbox doing parent.textbox1.Text only if textbox1 is not a private member from Form1. Ok, a lot of time I need to get information about controls in Form1, should I make the setters and getters for each attribute of a control needed in Form2? For example: I need to know the values of Text, ReadOnly and Location. Should I make the setters and getters for each one of these attributes? Is the use of internal modifier a bad practice?
The correct way to do it is with delegates. They are really pretty simple but it takes awhile to get your head around them. Here is a great example of what I think you’re looking for: http://samgaut.blogspot.com/2007/11/use-delegates-to-pass-data-between.html