Question

C#设计一个计算器判断是否输入的是数字

Answer 1

private void button1_Click(object sender,System.EventArgs e)

{

try{

double x=double.Parse(textBox1.Text);

double y=double.Parse(textBox2.Text);

double z;

if(j.Checked)

{

z=x+y;

textBox3.Text=z.ToString();

}

if(j2.Checked)

{

z=x-y;

textBox3.Text=z.ToString();

}

if(c.Checked)

{

z=x*y;

textBox3.Text=z.ToString();

}

if(c2.Checked)

{

z=x/y;

textBox3.Text=z.ToString();

}

catch(Exception ex)

{

Messagebox.show(...);

return;

}

}