创建界面
编写代码
1.按钮1
private void button1_Click(object sender, EventArgs e)
{
float num1 = 0; //定义
float num2 = 0;
float result = 0;
num1 = float.Parse(textBox1.Text); //字符转数值
num2 = float.Parse(textBox2.Text);
result = num1 * num2;
textBox3.Text = result.ToString(); //数值转字符
}
2.按钮2
private void button2_Click(object sender, EventArgs e)
{
textBox1.Text = "";
textBox2.Text = "";
textBox3.Text = "";
}
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