Question

In my main form (form1) I have checkboxes that when checked should also check the corresponding box in form2. I also want if checkboxes in form2 are checked they check the corresponding boxes on form1. The problem that I believe I am encountering is that form1 can make an object of form2 to reference, however if I instantiate an object of form1 within form2 I believe it creates an infinite loop? Any help figuring this out is appreciated.

Form1 creates an object of form2:

    Form2 formSettings = new Form2();

Now when I have an event I can update form2:

      public void logScanResultsToolStripMenuItem_Click(object sender, EventArgs e)
    {
        if (logScanResultsToolStripMenuItem.Checked)
        {
            formSettings.chbxLogScanResults.Checked = true;

        }
        else
        {
            formSettings.chbxLogScanResults.Checked = false;

        }        
    }         

But if I try to do something similar in Form2:

   Form1 form1 = new Form1();

So that I can reference form1’s menu item from within form2(formSettings) I end up creating an object (form1) that calls to make an object of Form1, which within Form1 includes a call to create an object of Form2 and thus an endless loop.

Answer 1

You shouldn’t create an instance every time a checkbox is checked off. You need to maintain the instances alive and hide/show them as needed. Also, the constructor of one of the forms should receive the other one as parameter in its constructor so they can reference each other.