Chapter 11, toolkit code in C#??

robbaralla · February 24th, 2010, 06:26 AM

Hello there,

I just got chapter 11 on demand from the site, because I need some code to make thumbnails of my images while they are uploaded. In Imar's book beginning ASP.NET 3.5, it refers to this chapter.

Unfortunately my project is in C#, so alreday having the toolkit communicate with the AppConfiguration.cs does not work.

I also need to adapt code from the SelectImages.ascx.vb to fit it into my own code (C#), but then again there would be the problem with the toolkit being in vb...

so I was just wondering if the toolkit is available somewhere in c#?

Thanks, Robin

Imar · February 24th, 2010, 06:51 AM

Hi Robin,

I don't think it's available in C# directly. However, it's pretty easy to convert it using an on-line converter such as: http://converter.telerik.com/

Send me an e-mail if you're having problems getting this to work. I can dig out some imaging code from a Toolkit library that was once the basis for the imaging methods in this book.

Cheers,

Imar

robbaralla · February 24th, 2010, 10:12 AM

Thanks Imar, I appreciate your help.

The translater seemed to work fine, except for the ViewState("FileName") instead of ["FileName"], and the closing " break; " in the switch - case block.

I translated UploadHandler.vb, Imaging.vb (partially), FileEventArgs.vb and SelectImage.aspx.vb. Now I'll try to make it work in my own code.

best regards, Robin

Imar · February 24th, 2010, 02:33 PM

Yeah, the converter sometimes has difficulties seeing the difference between a method call and an indexer. In VB, ViewState("SomeKey") could be a called to the ViewState method passing the SomeKey value or an indeder on the ViewState collection. So, sometimes you end up with incorrect code.

Fortunately, most of these issues are easy to fix.

Cheers,

Imar

robbaralla · February 26th, 2010, 10:35 AM

Hi Imar,

It didn't really go that smooth afterall; in the button with id btnUpload I had to add a refernece to the btnUpload_onClick event handeler, otherwise it doesn't fire.
And the same thing was true for the code in the btnfinish_Click, where also the ImageFinalized event needed to be initialized in the page_load event of its parent.
I found that solution in a previous thread on this forum, search key -- ImageFinalizedEventHandler.

regards, Robin

Imar · February 26th, 2010, 11:56 AM

Yes, VB uses the Handles keyword in code behind while C# uses ether explicit wiring syntax or uses an onclick on the control in markup.

Can you define " doesn't seem to work"? That's a vague description which makes it difficult to say something about. Does it not fire? Do you get an error? Does it fire but not trigger the event handler? And are you sure you subscribed to the event?

Maybe this helps as well: http://msdn.microsoft.com/en-us/library/wkzf914z.aspx

Cheers,

Imar