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namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void label2_Click(object sender, EventArgs e)
{
}
private void pictureBox1_Click(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
float a = float.Parse(textBox1.Text), b = float.Parse(textBox2.Text);
label2.Text = (a + b).ToString();
}
private void button2_Click(object sender, EventArgs e)
{
float a = float.Parse(textBox1.Text), b = float.Parse(textBox2.Text);
label2.Text = (a - b).ToString();
}
private void button3_Click(object sender, EventArgs e)
{
float a = float.Parse(textBox1.Text), b = float.Parse(textBox2.Text);
label2.Text = (a * b).ToString();
}
private void button4_Click(object sender, EventArgs e)
{
float a = float.Parse(textBox1.Text), b = float.Parse(textBox2.Text);
if (b == 0)
{
label2.Text = "分母為零";
}
else
{
label2.Text = (a / b).ToString();
}
}
}
}
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