Nevron Forum

ASP.Net WebForms: How to use ThinWebClient with Zoom

https://www.nevron.com/Forum/Topic12132.aspx

By joern kunze - Monday, May 22, 2017

Hi Experts,
I tried to rebuild the given Example for a ThinWeb-Chart with Zoom functionality from the scratch in the following way:

1. VS2015 - New Project WebForms with WebApi and MVC checked (not that I need the functionality right now but just to make sure that I am not missing something later).
2. Add the ThinWebClient Chart to the WebForm together with the necessary Nevron-dlls
3. Add the given Code from the Example to the Page_Load
(Nevron .NetVision 2016.1 for VS2015 => Nevron Chart - WebForm - Solution C# => Contents => ThinWeb => Data Zoom Tool => Source Code)
4. Running this example -> initially it looks good - exactly like the given example
https://www.nevron.com/forum/uploads/images/11fab592-a336-4461-9e2b-c365.jpg
But when I try to use the zoom, it looks not so good anymore - mostly there are no data points at all , although there should be some. Furthermore, the scrollbars at the axis are only half way there (well, not even half-way since the X-Axis scrollbar can not be scrolled):
https://www.nevron.com/forum/uploads/images/6cd2b71b-00e6-4b4e-8f4e-8287.jpg
 when I zoom out again, only some of the data points are back and now the axis seem to have a problem too:
https://www.nevron.com/forum/uploads/images/ff7e3527-1cd8-4d41-b31d-32cf.jpg

What am I missing here - it seems like some sort of Refresh or RePaint command should be done? When I just run the complete C# Nevron Example, everything is working well.

Thanks for your help,
best regards,
Joern
By Nevron Support - Monday, May 22, 2017

Hi Joern,
Can you send us the test example for review?
By joern kunze - Tuesday, May 23, 2017

I have attached the project with all files - hopefully it is not to large (50MB).

Just in case I have uploaded the project to our ftp-server:

http://www.adp-dresden.de/transfer/transfer/TestNevronThinWeb.zip

Best regards,
Joern
By Nevron Support - Thursday, May 25, 2017

Hi Joern,
Apparently there are some changed in the html button methods (enabled property is no longer recognized) and we had to update our java script. We'll publish a SP on this early next week and keep you posted.