Invoke a form button from usercontrol button

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I added a usercontrol to my C# project and added a buttonsX to the usercontrol.
In my main form, I have a buttonY that populates a listbox also in the main form.
How can I invoke the buttonY from buttonX?

What I have tried:

trying to learn the invoke method but it is very complex

Posted 13-Jul-17 16:40pm

picasso2

Updated 13-Jul-17 18:26pm

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Dave Kreskowiak · Answer 1 · 2017-07-13T18:26:00

Simple. You don't.

The problem with what you're describing is that you're tying the UserControl to the form forever. It will not be able to be used in any other form. Controls should NEVER know anything or want to do anything with the parent container (Form or other controls). Controls are responsible only for their own content and code.

So how do you do this? Your UserControl should expose an event that your button code raises. The parent form, or other containing control, can subscribe to this event and decide what to do when the event is raised, for example, running that button code, or even ignoring the event.

The other problem with what you describe is that the code in the Button Click handler that you want to run should not be in the Button Click event handler. That code should be in its own method, making it very easy to call it from both the Button Click event handler AND anywhere else in the Form code, even the event handler for your UserControl Button event.

Karthik_Mahalingam · Answer 2 · 2017-07-13T17:19:00

Solution 1

// user control button click event
       private void buttonsX_Click(object sender, EventArgs e)
       {
           Button parentFormButtonY = (Button) this.ParentForm.Controls.Find("buttonsY", true)[0];
           parentFormButtonY.PerformClick();

       }

Posted 13-Jul-17 17:19pm

Karthik_Mahalingam