前言

C#课设挺水的(基本题目都很简单)。还是简单记录一下，简单地使用了WPF的Combobox和GroupBox的控件。

功能需求

获取系统文化和国家信息（CultureInfo 类）：在组合框中选择一个国家，则会显示操作系统中该国家的有关信息。
大致情况如下：

学习demo

看了下题确实挺简单的，不是很想花时间在WPF这玩意上。
所以到网上抄(x学)了个demo–>参考资料链接3
可以通过ComboBox设置一个SelectionChanged的函数来进行变化。有了这个东西，然后修改GroupBox的内容就好了。(所以不看了，等会直接写代码吧
把界面调整一下，然后有了以下MainWindow.xaml文件代码

<Window x:Class="bigwork.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:bigwork"
        mc:Ignorable="d"
        Title="演示获取系统文化和国家信息" Height="265.898" Width="486.772">
    <Grid Margin="0,0,23.4,51.4">
        <Grid HorizontalAlignment="Left" Height="230" VerticalAlignment="Top" Width="461" Margin="10,0,-13.6,-51.8">
            <GroupBox x:Name="groupBox" Header="" HorizontalAlignment="Left" Margin="14,50,0,0" Width="424" Content="" RenderTransformOrigin="0.5,0.5" Height="158" VerticalAlignment="Top">
                <GroupBox.RenderTransform>
                    <TransformGroup>
                        <ScaleTransform/>
                        <SkewTransform/>
                        <RotateTransform Angle="-0.044"/>
                        <TranslateTransform/>
                    </TransformGroup>
                </GroupBox.RenderTransform>
            </GroupBox>
            <Label x:Name="label" Content="选择国家：" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="162"/>
        </Grid>
        <ComboBox x:Name="comboBox" SelectionChanged="comboBox_SelectionChanged" HorizontalAlignment="Left" Margin="228,10,-0.4,0" VerticalAlignment="Top" Width="221" Height="29"/>

    </Grid>
</Window>

写代码

有了上面的代码，界面就有了，下面写一下用户选择的逻辑即可，这里关联了两个类，RegionInfo类和CultureInfo类

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace bigwork
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public struct myRegion
        {
            public string name;
            public string countryName;
        };
        private myRegion[] region;
        public MainWindow()
        {
            InitializeComponent();
            region = new myRegion[220];
            //获取用户选择的菜单栏
            string[] select = getSelect();

            comboBox.ItemsSource = select;
            int a = 1;
        }
        private string[] getSelect()
        {
            CultureInfo[] custom = CultureInfo.GetCultures(CultureTypes.UserCustomCulture | CultureTypes.SpecificCultures);
            string[] select = new string[220];
            int i = 0;
            foreach (var culture in custom)
            {
                select[i] = getCountry(culture.Name);
                region[i].name = culture.Name;
                region[i].countryName = select[i];
                i++;
            }
            return select;
        }
        private string getCountry(string name)
        {
            RegionInfo myregion = new RegionInfo(name);
            return myregion.DisplayName;
        }
        private void comboBox_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            string text = comboBox.SelectedItem.ToString();
            foreach (var temp in region)
            {
                if(text == temp.countryName)
                {
                    text = temp.name;
                    break;
                }
            }
            RegionInfo myregion = new RegionInfo(text);


            this.groupBox.Header = myregion.DisplayName + "国家和文化信息";      //国家
            this.groupBox.Content = "国家全名：" + myregion.DisplayName+"\n";
            this.groupBox.Content += "国家英文名：" + myregion.EnglishName+"\n";
            this.groupBox.Content += "货币符号：" + myregion.CurrencySymbol+"\n";
            if (myregion.IsMetric)
                this.groupBox.Content += "是否使用公制：是\n";
            else
                this.groupBox.Content += "是否使用公制：否\n";
            this.groupBox.Content += "三字地区码：" + myregion.ThreeLetterISORegionName+"\n";
            CultureInfo MyCultureInfo = new CultureInfo(text);
            this.groupBox.Content += "语言名称：" + MyCultureInfo.Parent.DisplayName+"\n";
        }

    }
}

然后运行的情况，首先选择国家

然后选中之后就可以看到显示了

参考资料

前两个是微软的说明文档，第三个是一个combobox的一个demo。