C# Winform軟件多語言（漢語、英語。。。）界面的切換，低耦合

Winform軟件多語言切換，個人見解，降低軟件對語言展示的耦合度。

1、設計圖（自己瞎畫的呵呵）

2、做的小demo，界面如下

3、下面是代碼展示部分

    1）Form1代碼展示

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            SetLanguage();
        }

        private void SetLanguage()
        {
            this.lbUserName.Text = GlobalData.GlobalLanguage.Login_UserName;
            this.lbPwd.Text = GlobalData.GlobalLanguage.Login_UserPwd;
            this.btnLogin.Text = GlobalData.GlobalLanguage.Login_Login;
        }
    }
}

    2）GlobalData類代碼展示

namespace WindowsFormsApplication1
{
    public class GlobalData
    {
        /// <summary>
        /// 系統語言（Chinese（中文），English（英文）。。。）
        /// </summary>
        public static string SystemLanguage = System.Configuration.ConfigurationManager.AppSettings["Language"];

        private static Language globalLanguage;
        public static Language GlobalLanguage
        {
            get
            {
                if (globalLanguage == null)
                {
                    globalLanguage = new Language();
                    return globalLanguage;
                }
                return globalLanguage;
            }
        }
        
    }
}

    3）Language類代碼展示

namespace WindowsFormsApplication1
{
    public class Language
    {
        #region 登陸界面
        public string Login_UserName = "";
        public string Login_UserPwd = "";
        public string Login_Login = "";
        #endregion               

        protected Dictionary<string, string> DicLanguage = new Dictionary<string, string>();
        public Language()
        {
            XmlLoad(GlobalData.SystemLanguage);
            BindLanguageText();
        }

        /// <summary>
        /// 讀取XML放到內存
        /// </summary>
        /// <param name="language"></param>
        protected void XmlLoad(string language)
        {
            try
            {
                XmlDocument doc = new XmlDocument();
                string address = AppDomain.CurrentDomain.BaseDirectory + "Languages\\" + language + ".xml";
                doc.Load(address);
                XmlElement root = doc.DocumentElement;

                XmlNodeList nodeLst1 = root.ChildNodes;
                foreach (XmlNode item in nodeLst1)
                {
                    DicLanguage.Add(item.Name, item.InnerText);
                }
            }
            catch (Exception ex)
            {                
                throw ex;
            }            
        }

        public void BindLanguageText()
        {
            Login_UserName = DicLanguage["Login_UserName"];
            Login_UserPwd = DicLanguage["Login_UserPwd"];
            Login_Login = DicLanguage["Login_Login"];
        }
    }
}

    4）App.config代碼展示

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <!-- Language的值只能是Chinese（中文），English（英文） -->
    <add key="Language" value="English"/>
  </appSettings>
</configuration>

    5）English.xml代碼展示

<?xml version="1.0" encoding="utf-8" ?>
<English>
  <Login_UserName>UserName:</Login_UserName>
  <Login_UserPwd>Password:</Login_UserPwd>
  <Login_Login>Login</Login_Login>
</English>

    6）Chinese.xml代碼展示

<?xml version="1.0" encoding="utf-8" ?>
<Chinese>
  <Login_UserName>用戶名：</Login_UserName>
  <Login_UserPwd>密碼：</Login_UserPwd>
  <Login_Login>登錄</Login_Login>
</Chinese>

4、如果想要換法語則只需要在App.config中配置換成French，然后再添加一個French.xml，內容和其他語言模板一樣把內容換成法語則可。

5、OK。