Do I have access to all methods when I pass a reference of a form to another form?

  • Thread starter Thread starter Vaughn
  • Start date Start date
V

Vaughn

When I pass a reference to my current form, frm_x, when I create and show
another form, frm_y, do I have access to all of the public methods,
controls, members, etc.. of frm_x from frm_y?
In my code, I pass the reference like this:

private void btn_ListEmp_Click(object sender, System.EventArgs e)
{
frm_EmpList frm_empList = new frm_EmpList(this);
frm_empList.MdiParent = this.MdiParent;
frm_empList.Show();
}

---------------------
public Form _frm_emplRec;
public frm_EmpList(DataSet DS_allEmployees, Form frm_emplRec)
{
InitializeComponent();
_frm_emplRec = frm_emplRec;
//_frm_emplRec.txt_ssNum.Text = "MyText"; /* This doesn't compile
although txt_ssNum is public*/
}

How can I pass a reference of the form *and* have control of anything public
inside the form?
Also, is this the best way to pass values from one form to another? If not,
what other option could I use?

Thanks again,
Vaughn
 
Vaughn said:
When I pass a reference to my current form, frm_x, when I create and show
another form, frm_y, do I have access to all of the public methods,
controls, members, etc.. of frm_x from frm_y?
Click to expand...

Hi

Only to public members. Not to protected or private methods.
 
you could surely be able to get all the methods exposed,
but only if you create an object of the required form
 
How would I create an object of the form? I suppose that to do that, I need
more code than this:
public Form _frm_emplRec;
public frm_EmpList(DataSet DS_allEmployees, Form frm_emplRec)
{
InitializeComponent();
_frm_emplRec = frm_emplRec;
}

I assumed that with the code above, I'd be able to access all the controls
of the reference (Eg. _frm_emplRec.txt_ssnum.Text = visible;). But the
controls aren't recognized in the compiler.

Thanks again.
 
Hi

The problem is that the type of your field '_frm_emplRec' is 'Form'. The
type 'Form' does not have a public member called 'txt_ssnum', that's why
you are getting a compiler error. This can work in other languages that
support late-binding however C# does not.

You need to declared your '_frm_emplRec' field of the same type as the form
that you are getting.

thx
Gabriel Esparza-Romero, Visual C# Team
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