private void button17_Click(object sender, EventArgs e)
{
second = double.Parse(textBox1.Text);
double Plus;
double Divison;
double By;
double Minus;
// Here ill use a "switch" command for not overusing the "if" instruction.
switch (operator1)
{
case "+":
Plus = obj.Plus((first), (second));
textBox1.Text = Plus.ToString();
break;
case "*":
By = obj3.Multiply((first), (second));
textBox1.Text = By.ToString();
break;
case "-":
Minus = obj2.Minus((first), (second));
textBox1.Text = Minus.ToString();
break;
case "/":
Divison = obj4.Divide((first), (second));
textBox1.Text = Divison.ToString();
break;
}
}
public string generateId(String Q)
{
string connstr = @"Data Source=DESKTOP-QCAJFHA;Initial Catalog=vanpheng_jewelry;Integrated Security=True";
SqlConnection sqlConn = new SqlConnection(connstr);
sqlConn.Open();
comm = new SqlCommand(Q, sqlConn);
SqlDataReader dr = comm.ExecuteReader();
dataTable = new DataTable();
while (dr.Read())
{
Id = dr[0].ToString();
}
dr.Close();
int Plus;
try
{
Plus = Convert.ToInt32(Id) + 1;
}
catch
{
Plus = 1;
}
return(Plus.ToString());
}
private void btnPlus_Click(object sender, EventArgs e)
{
int Plus;
bool C1 = int.TryParse(txtNum1.Text, out Plus);
if (C1 == false)
{
MessageBox.Show("請輸入數字", "Oops!");
return;
}
bool C2 = int.TryParse(txtNum2.Text, out Plus);
if (C2 == false)
{
MessageBox.Show("請輸入數字", "Oops!");
return;
}
Plus = int.Parse(txtNum1.Text) + int.Parse(txtNum2.Text);
labANS.Text = Plus.ToString();
}
public void PlusToStringTest()
{
Assert.AreEqual("6+2", p.ToString());
}
public void ToString_IntegerOperand_ReturnsExpected()
{
var expr = new Plus(new Integer(3));
Assert.AreEqual("+3", expr.ToString());
}
