public partial class Form1 : Form
{
int a, b,c;
float x, y, z;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
a = Convert.ToInt32(textBox1.Text);
a = int.Parse(textBox1.Text);
b = Convert.ToInt32(textBox2.Text);
b = int.Parse(textBox2.Text);
c = a + b;
label2.Text = c.ToString();
}
private void button2_Click(object sender, EventArgs e)
{
a = Convert.ToInt32(textBox1.Text);
a = int.Parse(textBox1.Text);
b = Convert.ToInt32(textBox2.Text);
b = int.Parse(textBox2.Text);
c = a - b;
label2.Text = c.ToString();
}
private void button3_Click(object sender, EventArgs e)
{
a = Convert.ToInt32(textBox1.Text);
a = int.Parse(textBox1.Text);
b = Convert.ToInt32(textBox2.Text);
b = int.Parse(textBox2.Text);
c = a * b;
label2.Text = c.ToString();
}
private void button4_Click(object sender, EventArgs e)
{
x = Convert.ToInt32(textBox1.Text);
x = float.Parse(textBox1.Text);
y = Convert.ToInt32(textBox2.Text);
y = float.Parse(textBox2.Text);
z = x / y;
label2.Text = z.ToString();
if (b == 0)
{
label2.Text=("除術不可為0");
}
}
}
}
