private void btnDelete_Click(object sender, EventArgs e)
{
if (dataGridViewBooks.SelectedRows.Count > 0)
{
txtTitle.Text = dataGridViewBooks.CurrentRow.Cells["Title"].Value.ToString();
objectBook.DeleteBooksfromtable(txtTitle.Text);
MessageBox.Show("Data was deleted correctly");
ShowBooksfromModel();
txtTitle.Text = "";
}
else
{
MessageBox.Show("Select a line for delete");
}
}