ProgressBar incremented from outside of Form

[mamin]

I have, the following question:

I have a WindowsForm with ProgressBar progressBar1 and Button button1.
After onClick event on button the following method executes:

button_Click(object sender, EventArgs e)
{
DatabaseOperations.ClearDatabase();
}

where ClearDatabase() is static method which should increment my
progress bar. How can I increment my progress bar without giving
ProgressBar object as parameter( I mean without using
ClearDatabase(progressBar1); - it doesn't seem to be a good way)

Thanks for any reply.

[Jon Skeet [C# MVP]]

<ma***@o2.plwrote:

I have, the following question:

I have a WindowsForm with ProgressBar progressBar1 and Button button1.
After onClick event on button the following method executes:

button_Click(object sender, EventArgs e)
{
DatabaseOperations.ClearDatabase();
}

where ClearDatabase() is static method which should increment my
progress bar. How can I increment my progress bar without giving
ProgressBar object as parameter( I mean without using
ClearDatabase(progressBar1); - it doesn't seem to be a good way)

You'll need to provide *something*. If you want to decouple
DatabaseOperations from the UI (which is reasonable) you could give
DatabaseOperations a DatabasedClearProgress event which the UI could
subscribe to, and which ClearDatabase could raise.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

[mamin]

You'll need to provide *something*. If you want to decouple
DatabaseOperations from the UI (which is reasonable) you could give
DatabaseOperations a DatabasedClearProgress event which the UI could
subscribe to, and which ClearDatabase could raise.

But how can I raise ProgressBar event from this static method?

[Jon Skeet [C# MVP]]

<ma***@o2.plwrote:

You'll need to provide *something*. If you want to decouple
DatabaseOperations from the UI (which is reasonable) you could give
DatabaseOperations a DatabasedClearProgress event which the UI could
subscribe to, and which ClearDatabase could raise.

But how can I raise ProgressBar event from this static method?

You'd make the DatabaseClearProgress event static as well. It wouldn't
be a ProgressBar event - it would just be that the handler the UI added
would happen to update the progress bar.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

[Thomas T. Veldhouse]

ma***@o2.pl wrote:

I have, the following question:

I have a WindowsForm with ProgressBar progressBar1 and Button button1.
After onClick event on button the following method executes:

button_Click(object sender, EventArgs e)
{
DatabaseOperations.ClearDatabase();
}

where ClearDatabase() is static method which should increment my
progress bar. How can I increment my progress bar without giving
ProgressBar object as parameter( I mean without using
ClearDatabase(progressBar1); - it doesn't seem to be a good way)

I think the issue is that ClearDatabase() should probably NOT be static. You
could create a database "engine" and then have an event on it to indicate
status, completion, what have you. Then subscribe to them from your UI and
have the event handler post to the progress bar.

--
Thomas T. Veldhouse
Key Fingerprint: D281 77A5 63EE 82C5 5E68 00E4 7868 0ADC 4EFB 39F0

[Jon Skeet [C# MVP]]

Thomas T. Veldhouse <ve*****@yahoo.comwrote:

I think the issue is that ClearDatabase() should probably NOT be static. You
could create a database "engine" and then have an event on it to indicate
status, completion, what have you. Then subscribe to them from your UI and
have the event handler post to the progress bar.

While I agree that it would be good to have a database engine instance,
there's nothing to stop the OP from having a static event.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too