Question

C# 请教 选中单选框后 判断 两个textbox 里面是否有值 如果有就进行计算. 如果没有 等待输入值后计算

Answer 1

给radiobutton　加click事件了
private void radioButton1_Click(object sender, EventArgs e)
{
double a1 = 0, a2 = 0, a3 = 0, a4 = 0;

if (double.TryParse(textBox1.Text, out a1) && double.TryParse(textBox2.Text, out a2)
&& double.TryParse(textBox2.Text, out a3))
{
if (a2 * a3 > 0)
{
a4 = a1 / (a2 * a3);
}
}
textBox4.Text = a4.ToString();
}