Question

how to send events from mainform to assemblyform

Asked by: ingprokop

I'm using an interface to get events from an assemblyform to the mainform for execusion. now I need the assemblyform to get events from the mainform? how to do it?

thanks in advance

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Asked On
2009-06-25 at 04:13:17ID24521283
Topic

C# Programming Language

Participating Experts
1
Points
500
Comments
9

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Answers

 

by: daveamourPosted on 2009-06-25 at 05:05:41ID: 24710448

Hello again

You can do one of two things

Have an event handler in your main form which executes some code when a main form event happens  - this code will then ececute some method or other on the other form - eg myOtherForm.SomeMethod()

Alternativeley you can get the assembly form to subscribe to the main form's event.

MainForm.MyEvent += new EventHandler(myOtherForm.SomeMethod);

 

by: ingprokopPosted on 2009-06-25 at 06:28:20ID: 24711143

I think I managed to do the first method, thanks a lot.

however, I'm missing something in the other one...
how do I subscribe to main form?

 

by: daveamourPosted on 2009-06-25 at 06:49:32ID: 24711336

I added an example to the project we used earlier.  I had to change it to use Show instead of ShowModal so that you can open up the Assembly form and then click the Raise Event button.

Check it out.

http://www.audacs.co.uk/AssemblyTest.zip

 

by: ingprokopPosted on 2009-06-25 at 07:05:42ID: 24711506

aha, right. so you can write it direcly into the load assembly event... got it. thanks a lot

and what about if I want to send something through the EventArgs?

 

by: daveamourPosted on 2009-06-25 at 07:09:34ID: 24711541

You create a class which inherits from EventArgs and add in your data to an instance of that - unless there is an existing class which meets your needs of course.

I showed you this article before:

http://www.audacs.co.uk/ViewPage.aspx?PageID=476

Well worth another read now you know more and see how that deals with EventArgs

 

by: ingprokopPosted on 2009-06-25 at 07:16:13ID: 24711601

will read and will come back... thanks

 

by: ingprokopPosted on 2009-06-25 at 08:19:03ID: 24712290

ok.. no, I'm not sure why, but there's something very wrong with my code... and I'm starting to get confused

to be able to send data I need to create a class that will be used as the eventargs and that will contain data...

I'm not able to use the new created eventargs in the event I'm sending to the assemblyform because there's a conflict in conversion between the newly created eventargs and the system.eventargs..

...

 

by: ingprokopPosted on 2009-06-25 at 08:39:42ID: 24712555

ok, I think I got it. I just created a new delegate for the eventhandler, then created a new event (sendTexet for ex.) and used the button_click event to send the sendText event with the right object. like that it works...

 

by: daveamourPosted on 2009-06-26 at 00:07:55ID: 24718633

Yep the delegate signature needs to match any EventArgs which I think was maybe your problem.

20120131-EE-VQP-002

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