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C#窗体小程序计算器

article 2024/12/3 4:00:41

使其能完成2个数的加、减、乘、除基本运算。界面如下图，单击相应的运算符按钮，则完成相应的运算，并将结果显示出来，同时不允许在结果栏中输入内容

代码如下：

private void button1_Click(object sender, EventArgs e)
{
int a = int.Parse(textBox1.Text);
int b = int.Parse(textBox2.Text);
textBox3.Text = (a + b).ToString();
}

private void button2_Click(object sender, EventArgs e)
{
int a = int.Parse(textBox1.Text);
int b = int.Parse(textBox2.Text);
textBox3.Text = (a - b).ToString();
}

private void button3_Click(object sender, EventArgs e)
{
int a = int.Parse(textBox1.Text);
int b = int.Parse(textBox2.Text);
textBox3.Text = (a * b).ToString();
}

private void button4_Click(object sender, EventArgs e)
{
if (textBox2.Text == "0")
{
MessageBox.Show("被除数不能为0");
return;
}
int a = int.Parse(textBox1.Text);
int b = int.Parse(textBox2.Text);
textBox3.Text = (a / b).ToString();

}