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Last Updated: 02 Jan 2019 15:08 by ADMIN
Ioannis
Created on: 28 Dec 2018 11:03
Category: Spreadsheet
Type: Bug Report
6
RadSpreadsheet: Noticeable lag in Spreadsheet (slow user interaction)

Hello,

 

I have a RadRibbonForm with a normal ribbon with no items and a spreadsheet control.

 

I iterate over a datatable and fill the spreadsheet's cell values with the datatable's values

we're talking about a very small size, like 33 rows x 35 columns, and not even all the values are filled in.

 

Unfortunately, there's a very noticeable delay in the spreadsheet, from moving the scrollbars to selecting to changing sheets.. the whole thing feels laggy.

Is this just how it is, or am I experiencing a possible bug?

Could it have anything to do with https://feedback.telerik.com/winforms/1380948-exception-at-runtime-trial-bug ?

 

If that is just how it is, is there anything I can do to make it feel snappier? Disable a theme? Disable some behaviour?

3 comments
ADMIN
Dess | Tech Support Engineer, Principal
Posted on: 02 Jan 2019 15:08
Hello, Ioannis,   

The provided sample video is greatly appreciated. Indeed, the scrolling behavior should be improved. I have logged it in our feedback portal by making this thread public. You can track its progress, subscribe for status changes and add your comments on the following link - feedback item.

I have also updated your Telerik points.

Currently, due to the complexity of RadSpreadsheet implementation, I can't suggest you a suitable solution. It would require planning this item as it should be investigated precisely and whether and where it can be improved.

I hope this information helps. If you need any further assistance please don't hesitate to contact me. 

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
Get quickly onboarded and successful with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.
Ioannis
Posted on: 02 Jan 2019 12:07

Hello Dess, happy new year and thank you for your continuous assistance :)

 

So, my issue is not with data population (this part is very good indeed); it's with how it feels, working with this control.

I'm not sure how much a video can capture the feeling of it - like when I'm using the mouse to do something and I expect it to instantly appear -but each movement takes a split second and adding all delays together gives the feeling that the control lags.

Again, I don't know how well a video can capture it, but I've made a small video illustrating what I mean.

 

Best regards,

Ioannis Mamalikidis

Attached Files:
ADMIN
Dess | Tech Support Engineer, Principal
Posted on: 31 Dec 2018 07:40
Hello, Ioannis, 

We already have a known issue about the performance  when selecting cells in a large document. You can track its progress, subscribe for status changes and add your comments on the following link - https://feedback.telerik.com/winforms/1372574-fix-radspreadsheet-improve-the-performance-of-the-control-when-selecting-cells-in-large-documents

According to the provided information, it is not clear enough how exactly you populate RadSpreadsheet with data. However, it is not expected to be related to the other issue you are facing with the trial message. I have prepared a sample project for your reference where 35 rows and 35 columns are populated around 100 milliseconds on my end.  Feel free to modify it in a way to reproduce the experienced issue and get back to me with it so I can investigate the precise case. Thank you in advance. 

I am converting this forum thread into a support ticket in order to allow attachments. You can find the ticket in Your Telerik Account.

I am looking forward to your reply.

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
Get quickly onboarded and successful with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.
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