How to select the rows based on a cell value in WPF DataGrid (SfDataGrid)?

private void Button_Click(object sender, RoutedEventArgs e)
{
    if (datagrid.View != null)
        reflector = datagrid.View.GetPropertyAccessProvider();
    else
        reflector = null;
 
    var totalRowIndex = datagrid.View.Records.Count;
    var totalColumnIndex = datagrid.Columns.Count;
 
    for (int recordIndex = 0; recordIndex < totalRowIndex; recordIndex++)
    {
        for (int colindex = 0; colindex < totalColumnIndex; colindex++)
        {
            var record = this.datagrid.View.Records[recordIndex];
            var mappingName = datagrid.Columns[colindex].MappingName;
            //Get the cell value based on mappingName.
            var currentCellValue = reflector.GetValue(record.Data, mappingName);
            if (currentCellValue == "Bulk")
            {
                object item = datagrid.View.Records[recordIndex];
                //selected rows should be added here.
                datagrid.SelectedItems.Add(item);
            }
        }
    }
}