Access a form's control e.g. Label1 directly from a Self Defined Class

[Que Est]

How on planet earth do you access a form's component e.g Label from a self defined class.

Class SelfDefinedClas s
{
....
public void myMethod()
{
Label1.Text = "yzyzyzyz";
}
}

[adriancs]

go to the designer of that form.
for example: Form2.Designer. cs
change the properties of the component from private to public
example:
change this

private System.Windows.Forms.Label label1;

to this

public System.Windows.Forms.Label label1;

then upon creating/or after closing the Form, you'll be able to gain access the value of the component.
example:

private void button1_Click(object sender, EventArgs e)
{
    Form2 f2 = new Form2();
    f2.label1.Text = "Change to this text";
    f2.ShowDialog();
    MessageBox.Show(f2.label1.text);
}