// Bring all values to default
private void Reset()
{
TxtClientNumber.ResetText();
CmbAuthors.ResetText();
CmbBooks.ResetText();
NumInterval.Value = 30;
}
// Reset Text Boxes and numeric up-downs. Set Id and row index 0 and -1
private void Reset()
{
TxtBookName.ResetText();
CmbAuthors.ResetText();
NumPrice.Value = 0;
NumCount.Value = 0;
clickedId = 0;
clickedRow = -1;
CmbFindAuthor.SelectedIndex = -1;
CmbFindBook.SelectedIndex = -1;
FillCmbFindBook();
BtnDeleteBook.Visible = false;
BtnUpdateBook.Visible = false;
}