Question

c#高手进来帮我看看

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
double x = double.Parse(textBox1.Text);
double y = double.Parse(textBox2.Text);
double z;
if (radioButton1.Checked) z = x + y;
else if (radioButton2.Checked) z = x - y;
else if (radioButton3.Checked) z = x * y;
else z = x / y;
textBox3.Text = z.ToString();

}

private void Form1_Load(object sender, EventArgs e)
{

}

private void textBox1_TextChanged(object sender, EventArgs e)
{
double x = double.Parse(textBox1.Text);
}

private void textBox2_TextChanged(object sender, EventArgs e)
{
double y = double.Parse(textBox2.Text);
}

private void textBox3_TextChanged(object sender, EventArgs e)
{
double z = double.Parse(textBox3.Text);
}

private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
label1.Text="被加数";
label2.Text = "加数";
label3.Text="和数";
label4.Text = "+";

}

private void radioButton2_CheckedChanged(object sender, EventArgs e)
{
label1.Text = "被减数";
label2.Text = "减数";
label3.Text = "差数";
label4.Text = "-";
}

private void radioButton3_CheckedChanged(object sender, EventArgs e)
{
label1.Text = "被乘数";
label2.Text = "乘数";
label3.Text = "积数";
label4.Text = "*";
}

private void radioButton4_CheckedChanged(object sender, EventArgs e)
{
label1.Text = "被除数";
label2.Text = "除数";
label3.Text = "商";
label4.Text = "/";
}

private void button_exit_Click(object sender, EventArgs e)
{

}

private void button1_Click_1(object sender, EventArgs e)
{
textBox1.Text = "";
textBox2.Text = "";
textBox3.Text = "";

}
}
}

程序能跑，但是运行了一半在
double x = double.Parse(textBox1.Text);
里出现
{"输入字符串的格式不正确。"}的错误

Answer 1

就是你的获取值不对啊 你让它输汉字 你去输数字的意思

Answer 2

你输入的不是数字吧。加个判断吧。