<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="match_parent"android:layout_height="match_parent"><CheckBoxandroid:text="红色"android:layout_width="match_parent"android:layout_height="wrap_content"android:id="@+id/checkBoxRed" /><CheckBoxandroid:text="绿色"android:layout_width="wrap_content"android:layout_height="wrap_content"android:id="@+id/checkBoxGreen" /><RadioGroupandroid:minWidth="25px"android:minHeight="25px"android:layout_width="match_parent"android:layout_height="wrap_content"android:id="@+id/radioGroupGander"><RadioButtonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:checked="true"android:text="男"android:id="@+id/radioButtonMale" /><RadioButtonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="女"android:id="@+id/radioButtonFamale" /></RadioGroup><Buttonandroid:id="@+id/btnOK"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="确定" />
</LinearLayout>

using System;
using Android.App;
using Android.OS;
using Android.Widget;namespace ch05demos.SrcActivity
{[Activity(Label = "CheckBoxRadioButtonDemo")]public class Demo04CheckBoxRadioButton : Activity{CheckBox red, green;RadioButton nan, nv;protected override void OnCreate(Bundle savedInstanceState){base.OnCreate(savedInstanceState);SetContentView(Resource.Layout.demo04_CheckBoxRadioButton);red = FindViewById<CheckBox>(Resource.Id.checkBoxRed);green = FindViewById<CheckBox>(Resource.Id.checkBoxGreen);nan = FindViewById<RadioButton>(Resource.Id.radioButtonMale);nv = FindViewById<RadioButton>(Resource.Id.radioButtonFamale);var button = FindViewById<Button>(Resource.Id.btnOK);button.Click += Button_Click;}private void Button_Click(object sender, EventArgs e){string s1 = "性别：" + (nan.Checked ? "男" : "女");string s2 = "喜欢的颜色：";if (red.Checked) s2 += red.Text;if (green.Checked) s2 += " " + green.Text;Toast.MakeText(this,string.Format("{0}\n{1}", s1, s2),ToastLength.Long).Show();}}
}