企業(yè)級儀表盤 DevExpress Dashboard 可以在運(yùn)行時(shí)以編程的形式指定本地化資源的值，這個(gè)方法適用于在設(shè)計(jì)時(shí)不知道資源值的情況。今天小編為大家介紹如何本地化Windows Forms UI。

本地化應(yīng)用程序的步驟如下：

1、創(chuàng)建localizer class的子類

Dashboard Suite WinForms UI中有兩個(gè)特定的localizer對象類型：

• DashboardWinLocalizer -提供默認(rèn)的語言字符串值(en);
• DashboardWinResLocalizer - 在本地化資源使用Satellite resource assemblies時(shí)提供本地化語言字符串值。
• 本地化跨平臺字符串，也可 DashboardLocalizer 和 DashboardsResLocalizer 兩個(gè)類。

2、接下來覆蓋GetLocalizedString方法。這個(gè)方法會調(diào)用每個(gè)本地化字符串并返回字符串的值。默認(rèn)情況下，它返回的值包含在 DashboardWinStringId (in the DashboardWinLocalizer class) 或 DashboardStringId (in the DashboardLocalizer class) 類中。覆蓋GetLocalizedString方法后可以返回自定義的字符串值。

3、最后，為class部署一個(gè)實(shí)例，讓它變成靜態(tài)的Active屬性。注意：不是所有的字符串都可以通過Localizer classes進(jìn)行轉(zhuǎn)換。Dashboard包含表單資源（如Create Data Source wizard），唯一能轉(zhuǎn)換它們的方式就是創(chuàng)建Satellite assemblies。

下面這段代碼展示了如何將Dashboard Designer的界面本地化為Spanish：

public class SpanishDashboardWinLocalizer : DashboardWinLocalizer {
   public override string Language { get { return "Español"; }}
   public override string GetLocalizedString(DashboardWinStringId id) {
      string ret = "";
      switch(id) {
         // ... 
         case DashboardWinStringId.CommandNewDashboardCaption : return "Nuevo"; 
         case DashboardWinStringId.CommandOpenDashboardCaption : return "Abrir"; 
         case DashboardWinStringId.CommandSaveDashboardCaption : return "Guardar"; 
         case DashboardWinStringId.CommandSaveAsDashboardCaption : return "Guardar como"; 
         case DashboardWinStringId.CommandUndoCaption : return "Deshacer"; 
         case DashboardWinStringId.CommandRedoCaption : return "Rehacer"; 
         case DashboardWinStringId.CommandNewDataSourceCaption : return "Nueva Fuente de Datos"; 
         case DashboardWinStringId.CommandEditDataSourceCaption : return "Editar"; 
         case DashboardWinStringId.CommandDeleteDataSourceCaption : return "Eliminar";
         // ... 
         default:
            ret = "";
            break;
      }
      return ret;
   }
}
public class SpanishDashboardCoreLocalizer : DashboardLocalizer {
   public override string Language { get { return "Español"; }}
   public override string GetLocalizedString(DashboardStringId id) {
      string ret = "";
      switch(id) {
         // ... 
         case DashboardStringId.DateTimeGroupIntervalYear : return "Año"; 
         case DashboardStringId.SummaryTypeSum : return "Suma"; 
         case DashboardStringId.DescriptionItemArgument : return "Argumento"; 
         case DashboardStringId.DescriptionArguments : return "Argumentos"; 
         case DashboardStringId.DescriptionItemValue : return "Valor"; 
         case DashboardStringId.DescriptionValues : return "Valores"; 
         // ... 
         default:
            ret = "";
            break;
      }
      return ret;
   }
}

之后，這些localizers會被實(shí)例化，給它們的父類部署Active屬性：

private void Form1_Load(object sender, System.EventArgs e) {
DashboardWinLocalizer.Active = new SpanishDashboardWinLocalizer();
DashboardLocalizer.Active = new SpanishDashboardCoreLocalizer();
}

最終結(jié)果：

慧都學(xué)院2017全新DevExpress線下研修班火熱報(bào)名中！