private void button1_Click(object sender, EventArgs e)
{
try
{
account at = new account();
int a = int.Parse(textBox1.Text.Trim());
int b = int.Parse(textBox2.Text.Trim());
string str = comboBox1.Text;
switch (str)
{
case "加":
textBox3.Text = at.add(a, b).ToString();
break;
case "减":
textBox3.Text = at.subtraction(a, b).ToString();
break;
case "乘":
textBox3.Text = at.mulitiplication(a, b).ToString();
break;
case "除":
textBox3.Text = at.division(a, b).ToString();
break;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}