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Syncfusion Feedback

row selection on sfdatagrid grouping

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121915 Feb 8,2016 02:04 PM UTC Feb 9,2016 12:29 PM UTC UWP 1
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Tags: SfDataGrid
Thibault
Asked On February 8, 2016 02:04 PM UTC

Hello,

I'm using a datagrid in my UWP Application , which opens a dialogbox when a row is clicked (ie on row selection). my problem is that when I want to use grouping, a row is automatically selected when grouping, then a dialogbox is opened (while the row is not clicked). How to prevent from row selection when grouping?

The other problem is datagrid loading performance. My test collection contains only six items (to be displayed on six rows) and the page takes  8 seconds to be created with only a sfdatagrid inside.  Do you intend to improve that point?

Thanks for your help.
Regards,

Thibault

Jayapradha S [Syncfusion]
Replied On February 9, 2016 12:29 PM UTC

Hi Thibault,

Thank you for contacting Syncfusion support.

You can avoid the row selection while doing grouping in SfDataGrid by using SfDataGrid.ClearSelections(bool exceptCurrentRow) method. To clear selection while grouping, you need to customize the GridSelectionController and override the ProcessOnGroupChanged method as shown in the below code example:

Code Example:


  public MainPage()

        {

            this.InitializeComponent();           

            sfgrid.SelectionController = new GridSelectionControllerExt(sfgrid);

        }



public class GridSelectionControllerExt : GridSelectionController

    {

        SfDataGrid dataGrid;

        public GridSelectionControllerExt(SfDataGrid grid) : base(grid)

        {

            dataGrid = grid;

        }


        protected override void ProcessOnGroupChanged(NotifyCollectionChangedEventArgs args)

        {

            if (dataGrid.SelectionMode == GridSelectionMode.None)

                return;

            else

                dataGrid.ClearSelections(false);            

        }
    }


Find the sample from the below location:
Sample Link: http://www.syncfusion.com/downloads/support/forum/121915/ze/Grouping_SfDataGrid-1197625413

Regarding Query: other problem is datagrid loading performance. My test collection contains only six items(to be displayed on six rows) and the page takes 8 seconds to be created with only a sfdatagrid inside. Do you intend to improve that point?

We have analyzed the loading performance of our sfdatagrid with six rows and we didn’t find the performance delay in our control. Have checked your reported case and empty page has taken 4-5 secs to load. Our SfDataGrid loads, once the page getting displayed.  Still, this issue persists at your end then please share some more details.

Performance Metrics of SfDataGrid in UWP:
S.No
Page Loading Time with SfDataGrid
SfDataGrid loading time
(SfDataGrid loaded at runtime)
1
4-5 secs
1sec

We have prepared a sample and loaded the SfDataGrid in button click. This took 1sec to appear in page. Find the sample from the below location,

Sample Link: http://www.syncfusion.com/downloads/support/forum/121915/ze/LoadingPerformance_SfDataGrid-1432295075

Please let us know if you have any query.


Regards,
Jayapradha


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