How can I pass parameters to a form and return them from the main form?

Question

C++ / C#

I'm trying to pass parameters to the form, but it says: "Availability inconsistency".
Here is the code:

class TableTutorialItems : DockContent
  {
    public TableTutorialItems()
    {
      Text = "Таблица описания ходов";
      InitializeComponent();
    }
    public void WriteTable(List<model.Model> lis2t)
    {
      Console.WriteLine(lis2t);
    }

How can I pass parameters to a form and return them from the main form?

Answer 1

for each form, create a public method or property, to receive data and you will be happy
, do not forget that the main form sees the child ones by the fact that it generates them, but the child must be told where and how to return the processing results. everything is the same - through public methods or properties, although it is also possible through the constructor

Answer 2

Is the model object class public?