Managing Row Details in DataGrid for MAUI on Cell or Row Selection
Environment
Product | Version | Author |
---|---|---|
DataGrid for .NET MAUI | 7.1.0 | Dobrinka Yordanova |
Description
In a DataGrid for MAUI, I want to show or hide row details based on cell selection without using the default DataGridToggleRowDetailsColumn
. The goal is to use the SelectionChanged
event to achieve this functionality. This KB article also answers the following questions:
- How can I show row details on cell selection in a DataGrid?
- What is the method to toggle row details visibility based on cell selection?
- How to use the
SelectionChanged
event to show row details in the DataGrid for MAUI?
Solution
To display row details based on cell selection:
- Define a
RowDetailsTemplate
. For more information on how to set up aRowDetailsTemplate
, refer to the Row Details Template documentation. - Handle the selection:
- To display the row details when a cell is selected, handle the cell selection.
- To display the row details when a row is selected, handle the row selection.
Handling Cell Selection
When the SelectionUnit
is set to Cell
, the item within the e.AddedItems
or e.RemovedItems
collections is of type DataGridCellInfo
. To add or remove items from the ExpandedRowDetails
collection based on cell selection, use the following approach:
void dataGrid_SelectionChanged(System.Object sender, DataGridSelectionChangedEventArgs e)
{
RadDataGrid dataGrid = sender as RadDataGrid;
foreach (DataGridCellInfo item in e.AddedItems)
{
dataGrid.ExpandedRowDetails.Add(item.Item);
}
foreach (DataGridCellInfo item in e.RemovedItems)
{
dataGrid.ExpandedRowDetails.Remove(item.Item);
}
}
This code listens for the SelectionChanged
event and appropriately adds or removes the items associated with the selected or deselected cells to or from the ExpandedRowDetails
collection, thus showing or hiding the row details.
Handling Row Selection
If the SelectionUnit
is set to Row
, the objects in the e.AddedItems
and e.RemovedItems
collections are your business objects. You can handle them as follows:
void dataGrid_SelectionChanged(System.Object sender, DataGridSelectionChangedEventArgs e)
{
RadDataGrid dataGrid = sender as RadDataGrid;
foreach (var item in e.AddedItems)
{
dataGrid.ExpandedRowDetails.Add(item);
}
foreach (var item in e.RemovedItems)
{
dataGrid.ExpandedRowDetails.Remove(item);
}
}
This snippet functions similarly to the cell selection scenario but is tailored for when entire rows are selected.
Notes
- Ensure the
SelectionUnit
property of theRadDataGrid
is properly set according to your requirements (Cell
orRow
). - The
ExpandedRowDetails
collection directly controls the visibility of row details.