#作业要求：
#乘法计算器#
#代码：
···
namespace笔记
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
float num1 = 0;
float num2 = 0;
num1 = float.Parse(textBox1.Text);//将文本框输入数字
num2 = float.Parse(textBox2.Text);
float result = 0;
result= num1 * num2;
textBox3.Text=result.ToString();//将数值转换成字符
}
private void button2_Click(object sender, EventArgs e)
{
textBox1.Text = "";
textBox2.Text = "";
textBox3.Text = "";
}
···
#效果图：
