How do I invoke a method in a userform from parent form?

Question

Learning C#:

I have structure of

form1 (splitcontainer)
  userformLeft (button + sub-panel)
    userformDisplay (loaded into panel in userformLeft)
  userformRight

I want to execute a method in userformDisplay from form1 (timer in form1).

And the other way around, let's say I have public property form1.mainTimer, can I call it from userFormDisplay like

myLong = this.parent.parent.mainTimer;

or similar.

You will have to pass reference to the form instance when creating the control, then just use that instance. — Shadow The GPT Wizard, Nov 17 '11 at 12:15

score 2 · Answer 1 · 2011-11-17T13:00:28.070

2

yes.. you can do this:

myLong = ((form1)this.parent.parent).mainTimer;

edited Nov 17 '11 at 13:00

answered Nov 17 '11 at 12:45

score 1 · Accepted Answer · edited May 23 '17 at 10:24

Similar problems of communicating between one form and another... whether attaching to "events" of one, or calling / setting values to/from each other. Here are a couple links to questions I've answered to in the past that may help understand the relationships to do so.

Sample 1 with explicit steps to create two forms communicating back/forth to each other

Sample 2 somewhat similar, but attaching to events between forms

How do I invoke a method in a userform from parent form?

2 Answers2

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