private void TaxCancelButton_Click(object sender, EventArgs e)
{
TaxBindingSource.CancelEdit();
EnlargeDataGrid(TaxDataGridView, TaxAddButton, TaxPanel);
}
private void TaxAddButton_Click(object sender, EventArgs e)
{
TaxBindingSource.AddNew();
ReduceDataGrid(TaxDataGridView, TaxAddButton, TaxPanel);
}