We have same issue.

 

Being able to scroll a grid vertically/horizontally is core functionality.

 

Why isnt this major defect being fixed as a priority rather than building new functionality?

Hi Didi,

 so lets focus on the oldes root of the problem. Actual video is after lot of "tweaks"(unsuccessful) to get it working, but in normal state, scrollbars are not there. You have to move mouse pixel by pixel to show up - its tricky also. But as you see even if they appear, scroll still not moving content.

Helo Didi,

 take a look at post and your answer from "16 Dec 2021 16:02". Its still the same, but actually its almost instant, which is worse.

grid->push new page->go back from page to the grid page= scrolling is broken. No matter if you reload data or not.

How to deal with this situation? Fiddlering with calling recalculate,hide show grid, force readd columns and so on, didnt helped.

Any hint would be nice, otherwise its not usable with just grid+editor page.

Thanks

Hello,

 any update? it really painful, when user cant scroll grid in "any" direction?
As Gert written, its not only about changing datasource, its just go forth and back into the same page. At first time scroll is ok, at seccond, content is not scrolling, even srollbars is moving.

Trick with "resorting" column click is not working anymore also.

Any workaround, or hotfix?

Very similar problem - I'm working on a sample app to demonstrate it.

I have a RadDataGrid that I bind to a DataTable

When the user selects a different report, I change the DataTable to which the control is bound.

When I do nothing but vertical scroll of the original table, everything is fine.

But if you horizontally scroll the first set of data, then change the bound DataTable, the RadDataGrid is blank.

I should clarify: when i say the rows don't fit on the screen when we change the filters. I mean the columns resize and not all columns are visible anymore. Vertical scrolling still works as expected.

Hello,

We are experiencing the same issues in our Android application (Xamarin.Forms)

When we first load the page, the Grid is loaded with for example 2 rows, these 2 rows fit on the page horizontally, so no scrolling required.

when we change some filters to include more rows, some rows don't fit on the screen so horizontal scrolling is required and works as expected.
but when we go back to the original filters and only 2 rows remain (that should fit in the screen) the columns aren't resized and the scrolling doesn't work.

Also when we tap on a row, a new page is opened with the details of that row. when we go back to the GridPage, the scrolling is also not working, even when the columns are outside the boundaries of the page.

this is frustrating for our users because they think the page is frozen when it's not.

 

Hi Didi,

 iam not aiming on android so cant tell more details. Yes problem is on UWP, as posted on first message.

Hi Didi,

 the template is standard VS2019 ->new project->master detail or flyout (it behaves the same)
- grid page is placed into the: Detail of the Masterdetail/flyout page
- but it its happening on any navigation page.

public partial class MainPage : FlyoutPage

{

Detail = new NavigationPage(new VykHLPage(id));
IsPresented = false;

}


Key points are:
1) INITIAL columns of the grid must be NEAR the edge of the screen(vertical-right), and without loaded data do not exceed the width(no scroll is required), all fits on screen= thats the reason why iam did not answered "resolution question", because its not a constant value. :)
- In this setup and "my loaded data" the reproducible behaviour is at width 820px;
- width: 605px is without problem and anything wider then 1400px also.

2) after loading data, columns gets wider and scroll is required *here the problems starts after second call - OnAppearing*
3) data can be loaded with any local list of data. In sample it is:
protected override void OnAppearing()

{
viewModel.LoadItemsCommand.Execute(null);
}
public async Task ExecuteLoadItemsCommand(string f=null){ItemsAll = JsonConvert.DeserializeObject<ObservableCollection<VykHLModel>>(await httpclient call....);

or static datasource..
ItemsAll = new ObservableCollection<VykHLModel>() { new VykHLModel() { ID = 0, Nazev1 = "sdf sdaf sdfg sdf gsd fgsdf gsdg ",
KodPraceNazev="asdf asdf asd fas fas dfasd fas fas",
CisloZamNazev = "as dfa sdfas dfasd fasd fas fas f",Vozidlo3Nazev="testasd fasdf asd f" } };
}

I understand that its tricky to reproduce, take a look how to fiddle with width to get it broken. Sorry for not sending another source codes.

Hello Didi,

 video+source code attached.

In video:

1- at the begining horizontal scroll is wirking (first enter to the page)
2- click on row: Navigation.PushAsync....
3- go back to grid page
4- horizontal scroll isnt showing/working
5- click on any grid column header to sort: And horizontal scrollbar is back again
Same behaviour is on the touch screen also.

Hop it helped.

The problem also persit in similar scenario, current release of components:

UWP

- ONLY the grid on the page

- put 3 columns in grid with header "AAA,BBB,CCC" = narrow columns without width set

- load data with LONG text to each colum

- on FIRST load horizontal scrool is working

- now do navigation.Push(to another page, empty, doesnt matter) and go back POP to grid page

scroll is not working, until you click on AAA to sort the grid.

 

Any workaround for this? (no, column width cannot be set too wide initialy - sometimes you use narrow mobile, sometimes tablet or desktop)

Hello

Unfortunatly the bug still isn't fixed in v2020.1.318.1. 
Is this still planned? 

Please advice on a workaround for this problem.

Kind Regards
Pallieter Defever
InMotion Software

Hello, sadly you didn't fix this in v2019.1.116.1 release. In my RadDataGrid I have set "SelectionMode" to "None", because I have a column with buttons, which opens a popup for further processing the underlying databinding. So in my case an item can't be tapped. But it's a problem in general that an item has to be tapped again, to make the scrollviewer work again. Users do not unterstand that they have to tap an item first or when they try to horizontal scroll on white space (no item selected) and assume the application is stuck.

Please note: The text displayed in row has to be wider than the RadDataGrid itself to enable horizontal scrolling and let the error occur.

See attached Visual Studio 2017 solution in zip file. To test press Button 1 and Button 2 alternately and try horizontal scrolling after that.

Can you release an intermediate version which fixes this?

 

Thank you, best regards