Question

Hi i got a program that have two forms..

it goes like this

Form1(my main form)

From2

Form2 will only show if it is called by form1,
basically when i start the program form1 is the only one there.
but whats weird is.. the timer inside Form2 is already running.

Anyone got an idea why this is happening?

UPDATE:

here the code i used

public partial class MainForm : Form, IMessageFilter 
{
    public Form2 f2 = new Form2();
 
}

public void ShowForm2()
{
f2.Show();
}

Answer 1

When you said:

public Form2 f2 = new Form2 ();  // its inside public partial class MainForm

Is it like this:

public class MainForm {
     public Form2 f2 = new Form2();

     public void ShowForm2() {
         f2.Show();
     }
}

You should not do that, else you should create an instance of Form2 when needed, like this:

public class MainForm {
     public void ShowForm2() {
         Form2 f2 = new Form2();
         f2.Show();
     }
}

Now you are sure that the instance will exist only when the message is received and will avoid to running the timer in Form2 if it is hidden.