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DataGridTemplateColumn header issue on scrolling
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Martin
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Martin asked on 08 May 2019, 12:22 PM

Hello all together,

another scrolling bug on RadDataGrid with DataGridTemplateColumn and DataTemplate as Header. This is a real show-stopper. The problem does not exist with DataGridTextColumn. But using DataGridTextColumn is no alternative, because it cannot be formatted, as it ignores FontFamily and so on in Header.

Issue:
If the number of columns is relatively higher than the width of the Grid, the header text in the last column will be broken and jump around when horizontal scolling left and right.

Tested on:
Samsung Galaxy Tab A, Android 8.1.0, Telerik.UI.for.Xamarin 2019.1.318.1

How to test:
Deploy solution (Visual Studio 2017) in appendix (rename .png to .zip) to Android device. Scroll left and right and watch the header of the last column. It's header text in xaml is "EEEEEEEEEEEEEEEEEE". This text won't be displayed, but "AAAAAAAAAAAA" or "BBBBBBBBBBBB" or "DDDDDDDDDDD" instead. By scrolling left and right several times the last columns header text will jump around. If you broaden the RadDataGrid from width 300 to 600 in xaml the issue is gone.

Please confirm.

 

Please, have a look here accordingly. This scolling bug is pending since a half year:

https://feedback.telerik.com/xamarin/1380407-datagrid-scrollviewer-is-not-always-visualized-when-dynamically-changing-the-itemsource-of-the-control

 

Thank you.

 

Kind regards,

Martin

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Didi
Telerik team
answered on 10 May 2019, 03:16 PM
Hi Martin,

I am sorry to hear that this issue is a show stopper for the project. We have it logged in our Feedback portal and here is the link:

https://feedback.telerik.com/xamarin/1366379-datagrid-columnheaders-are-inaccurately-visualized-when-headercontenttemplate-is-set-and-horizontal-scrolling-is-performed

Workaround:
You could use the workaround provided in the following Forum thread:
https://www.telerik.com/forums/can-you-turn-off-ui-virtualization#rHyX0PVnskCX4l0Lmy7kZg

Note
I'd like to ask you not to upload zip files to our forums in such a way. If you need to send us other than images types of files, please open a support ticket and attach them there. For more details please check our support plans here: https://www.telerik.com/purchase/support-plans

I hope I was helpful.

Regards,
Didi
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Martin
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Didi
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