private void buttonFindAge_Click(object sender, EventArgs e)
 {
     Sloths.AgeBeetween(sqlConnection, dataGridViewZoo, textBoxAgeLeft.Text, textBoxAgeRight.Text);
 }
 private void textBoxFindSloths_TextChanged(object sender, EventArgs e)
 {
     Sloths.FindByName(sqlConnection, dataGridViewZoo, textBoxFindSloths.Text);
 }
 private void buttonSloths_Click(object sender, EventArgs e)
 {
     Sloths.ShowAllSloths(sqlConnection, dataGridViewZoo);
 }