when setting a custom font to the column header style, the DataGrid crashes with null ref exception on WinUI.

If you use FooterContentTemplate to add elements into the footer that require mouse over/click events (eg a Button or a Label with a tooltip), it works fine as long as the datagrid has enough data to scroll. However, if you resize the grid bigger or remove items until you no longer need to scroll and you have empty space between the last row and the footer, then none of those mouse events work.

Delegate aggregate descriptor does not update value in the UI when adding/removing item.

The behavior also happens with the property aggregate descriptor.

Provide an option to group the columns in Telerik MAUI DataGrid control. Similar like in the WPF GridView control: https://docs.telerik.com/devtools/wpf/controls/radgridview/columns/column-groups 

Aggregates error appears in column with nested properties when the data you want to group by is not set by the time the data grid's ItemsSource is set,

If the data you want to group by is not set by the time the data grid's ItemsSource is set, then the grouping doesn't work as expected. Everything gets into a single group called (blank)

When using ImageButton inside a CellTemplate, the image does not display initially. When you resize the window image is displayed. 

 

Workaround:

Use Image instead of ImageButton

 

expand a row and collapse it. Or expand a few rows, scroll around a bit, and then collapse one. You can get into some weird situations. Gray background over the group, row background and alternate styles are reset. 

 I need to change the size of the DataGrid scrollbars to be wider and customize their color.

Provide an event that occurs when the content in the DataGrid is drawn. 

when loading same page without navigating to another page, there are some left instances of the DataGrid and the memory increase. 

I want to strikethrough the text in  the row based on a value. 

i checked and the column cell content style DataGridTextCellAppearance class does not expose such property.

For example we have set RowHeight to 26 with GridLineThickness = 1, GridLinesVisibility = Horizontal, and RowBackgroundStyle and AlternateRowBackgroundStyle with BorderThickness = 0.

The first row is 26px, the middle rows are 25px and the last row is 24px. So it seems the grid lines are included in the calculation of the RowHeight. 

You can tab into the datagrid, but can't tab out of the data grid (focus trap)

In the current DataGrid implementation, the DataGrid will start with all the groups expanded. The only way to have any form of preference is to programmatically interact with the DataView after data is presented in the control  https://docs.telerik.com/devtools/maui/controls/datagrid/grouping/expand-collapse 

Requested Feature
A better approach that I am requesting a feature for is to have a property available for the DataGrid that sets this value ahead of time.

For example, you could add it as a BindableProperty on the GroupDescriptor class and on the GroupDefinition is to have an IsExapanded property.

Navigating to a DataGrid that is placed on third page first time the control displays when navigating to the third page. When navigating back to the second page and then go back to the third page the control do not display. 

On net 8 works as expected, the issue happens on net 9 and singleton approach is used.

Provide an option to expose the AggregateError as a string and an option to customize the error through localization.

We need an API through which we can get the currently visible in the viewport items. The API should take into account operations like sorting, filtering and grouping.

Currently when the typed DataGrid columns (all columns except TemplateColumn) do not have a PropertyName/DataMemberBinding applied, a misleading exception is thrown and it is difficult to find out what is causing it.

In Telerik WinForms GridView there is a Row number feature: https://docs.telerik.com/devtools/winforms/controls/gridview/visual-elements/cells/formating-examples/row-numbers