How to delete selected rows using delete button in Flutter DataTable (SfDataGrid)?.

In this article, we will show you how to delete selected rows using delete button in Flutter DataTable.

Initialize the SfDataGrid widget with all the required properties. In the buildRow method, display the Details and Delete buttons based on row selection using the selectedRows list from the DataGridController. When a row is selected, the delete button will appear in the last column. Tapping the delete button removes the corresponding row from DataGridSource.rows, and calling notifyListeners() refreshes the SfDataGrid to reflect the changes.

@override
  DataGridRowAdapter? buildRow(DataGridRow row) {
    bool isSelected = controller.selectedRows.contains(row);

    return DataGridRowAdapter(
      cells:
          row.getCells().map<Widget>((dataGridCell) {
            if (dataGridCell.columnName == 'button') {
              return Padding(
                padding: const EdgeInsets.all(3.0),
                child: ElevatedButton(
                  onPressed: () {
                    if (isSelected) {
                      dataGridRow.remove(row);
                      notifyListeners();
                    } else {
                      showDialog(
                        context: context,
                        builder:
                            (context) => AlertDialog(
                              title: Text('Employee Details'),
                              content: Column(
                                mainAxisSize: MainAxisSize.min,
                                children: [
                                  Text(
                                    'ID: ${row.getCells()[0].value.toString()}',
                                  ),
                                  Text(
                                    'Name: ${row.getCells()[1].value.toString()}',
                                  ),
                                  Text(
                                    'Designation: ${row.getCells()[2].value.toString()}',
                                  ),
                                ],
                              ),
                              actions: [
                                TextButton(
                                  onPressed: () => Navigator.pop(context),
                                  child: const Text('Close'),
                                ),
                              ],
                            ),
                      );
                    }
                  },
                  style: ElevatedButton.styleFrom(
                    backgroundColor: isSelected ? Colors.red : Colors.blue,
                  ),
                  child:
                      isSelected
                          ? const Icon(Icons.delete, color: Colors.white)
                          : const Text('Details'),
                ),
              );
            }
            return Container(
              alignment: Alignment.center,
              padding: const EdgeInsets.all(8.0),
              child: Text(dataGridCell.value.toString()),
            );
          }).toList(),
    );
}

You can download this example on GitHub.