C#界面设计之单选按钮的使用

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

namespace Demo4211
{
public partial class Demo421 : Form
{
public Demo421()
{
InitializeComponent();
}

private void btn1_Click(object sender, EventArgs e)
{
ChooseColor();
}

private void ChooseColor()
{
if (rb1.Checked)
{
MessageBox.Show("橙色你好！");
}
if (rb2.Checked)
{
MessageBox.Show("红色你好！");
}
if (rb3.Checked)
{
MessageBox.Show("白色你好！");
}
if (rb4.Checked)
{
MessageBox.Show("粉色你好！");
}
if (rb5.Checked)
{
MessageBox.Show("蓝色你好！");
}
if (rb6.Checked)
{
MessageBox.Show("绿色你好！");
}
}
}
}