How to clear all rows in Flutter DataTable (SfDataGrid) ?

In this article, we will show you how to clear all rows in Flutter DataTable.

Initialize the SfDataGrid widget with all necessary properties. The SfDataGrid relies on DataGridSource to retrieve row data. The number of rows and row selection depend on DataGridSource.rows. To remove all rows, set DataGridSource.rows to an empty list ([]). After clearing the rows, call notifyListeners() to update the SfDataGrid and reflect the changes in the UI, ensuring smooth updates, especially during CRUD operations.

@override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Syncfusion Flutter DataGrid')),
      body: Column(
        children: [
          TextButton(
            onPressed: () {
              employeeDataSource._employeeData = [];
              employeeDataSource.notifyListeners();
            },
            child: Text('Clear rows'),
          ),
          Expanded(
            child: SfDataGrid(
              source: employeeDataSource,
              selectionMode: SelectionMode.multiple,
              columnWidthMode: ColumnWidthMode.fill,
              columns: <GridColumn>[
                GridColumn(
                  columnName: 'id',
                  label: Container(
                    padding: EdgeInsets.all(16.0),
                    alignment: Alignment.center,
                    child: Text('ID'),
                  ),
                ),
                GridColumn(
                  columnName: 'name',
                  label: Container(
                    padding: EdgeInsets.all(8.0),
                    alignment: Alignment.center,
                    child: Text('Name'),
                  ),
                ),
                GridColumn(
                  columnName: 'designation',
                  label: Container(
                    padding: EdgeInsets.all(8.0),
                    alignment: Alignment.center,
                    child: Text('Designation', overflow: TextOverflow.ellipsis),
                  ),
                ),
                GridColumn(
                  columnName: 'salary',
                  label: Container(
                    padding: EdgeInsets.all(8.0),
                    alignment: Alignment.center,
                    child: Text('Salary'),
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

You can download this example on GitHub.