如何从 .NET CultureInfo 类派生自定义文化？

发布于 2024-10-17 08:17:33 字数 1703 浏览 9 评论 0原文

我想将我的应用程序文化设置为我想要的任何内容，无论操作系统文化是什么。为了获得此信息，我使用了 CultureInfo 类，其中“fa-IR”作为区域性，但它使用“GregorianCalendar”作为默认日历，而不是 .NET PersianCalendar 类。因此，我尝试从 CultureInfo 派生一个新类来实现我的客户文化：

/// <summary>
/// Represents culture specific information, Persian calendar and number format info for Iran.
/// </summary>
public class PersianCultureInfo : CultureInfo
{
    private Calendar _calendar = new PersianCalendar();

    public PersianCultureInfo()
        : base("fa-IR", true)
    {
    }

    /// <summary>
    /// Persian calendar with solar system algorithm for Iran.
    /// </summary>
    public override Calendar Calendar
    {
        get
        {
            return this._calendar;
        }
    }

    public static PersianCultureInfo Create()
    {
        PersianCultureInfo culture = new PersianCultureInfo();
        culture.PerpareDateTimeFormatInfo();
        return culture;
    }

    private void PerpareDateTimeFormatInfo()
    {
        this.DateTimeFormat.Calendar = this.Calendar;
        this.DateTimeFormat.FirstDayOfWeek = DayOfWeek.Saturday;
    }
}

问题是 DateTimeFormat 属性引发以下异常：

Not a valid calendar for the given culture. 
Parameter name: value

所以我尝试重写OptionalCalendars 属性以将 PersianCalendar 添加到其中，因为默认情况下列表仅包含GregorianCalendar 和 HijriCalendar：

    public override Calendar[] OptionalCalendars
    {
        get
        {
            return base.OptionalCalendars.Concat<Calendar>(new Calendar[1] { new PersianCalendar() }).ToArray<Calendar>();
        }
    }

但它并没有解决问题。怎么了？如何以正确的方式将 PersianCalendar 设置为 CultureInfo 和 DateTimeFormat 的默认日历？

原文

I want to set my application culture to whatever I want, regardless of what the OS culture is. To obtain this I used CultureInfo class with "fa-IR" as culture, but it used the "GregorianCalendar" as default calendar and not the .NET PersianCalendar class. So I tried to derive a new class from CultureInfo to implement my customer culture:

/// <summary>
/// Represents culture specific information, Persian calendar and number format info for Iran.
/// </summary>
public class PersianCultureInfo : CultureInfo
{
    private Calendar _calendar = new PersianCalendar();

    public PersianCultureInfo()
        : base("fa-IR", true)
    {
    }

    /// <summary>
    /// Persian calendar with solar system algorithm for Iran.
    /// </summary>
    public override Calendar Calendar
    {
        get
        {
            return this._calendar;
        }
    }

    public static PersianCultureInfo Create()
    {
        PersianCultureInfo culture = new PersianCultureInfo();
        culture.PerpareDateTimeFormatInfo();
        return culture;
    }

    private void PerpareDateTimeFormatInfo()
    {
        this.DateTimeFormat.Calendar = this.Calendar;
        this.DateTimeFormat.FirstDayOfWeek = DayOfWeek.Saturday;
    }
}

The problem is that the DateTimeFormat property throws the following exception:

Not a valid calendar for the given culture. 
Parameter name: value

So I tried to override the OptionalCalendars property to add the PersianCalendar to them, because by default the list only contains the GregorianCalendar and HijriCalendar:

    public override Calendar[] OptionalCalendars
    {
        get
        {
            return base.OptionalCalendars.Concat<Calendar>(new Calendar[1] { new PersianCalendar() }).ToArray<Calendar>();
        }
    }

But it didnt solved the problem. What is wrong? How can I set PersianCalendar as default calendar for CultureInfo and DateTimeFormat in correct way?

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说谎友 2024-10-24 08:17:33

尝试使用 CultureAndRegionInfoBuilder 。根据 MSDN，这是创建自定义的首选方式文化。

编辑：
如果失败，我猜使用反射的肮脏解决方法是创建的唯一方法这样的风俗文化。

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彡翼 2024-10-24 08:17:33

五年过去了，事情发生了变化。 Microsoft 有开源 .NET，现在，它支持开箱即用的 PersianCalendar。

我已经在 .NET Core 1.0 中尝试了以下代码片段，它工作得很好：

using System;
using System.Globalization;

namespace ConsoleApplication
{
    public class Program
    {
        public static void Main(string[] args)
        {
            System.Globalization.CultureInfo.CurrentCulture = 
                new CultureInfo("fa-IR");
            Console.WriteLine(System.DateTime.Now); 
            // Prints: 1395/4/19 A.D. 13:31:55  
        }
    }
}

Five years have passed and things have changed since then. Microsoft has open sourced .NET, and now, it supports PersianCalendar out of the box.

I have tried the following snippet with .NET Core 1.0 and it works just fine:

using System;
using System.Globalization;

namespace ConsoleApplication
{
    public class Program
    {
        public static void Main(string[] args)
        {
            System.Globalization.CultureInfo.CurrentCulture = 
                new CultureInfo("fa-IR");
            Console.WriteLine(System.DateTime.Now); 
            // Prints: 1395/4/19 A.D. 13:31:55  
        }
    }
}

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