如何在 C# 中枚举本地化字母表？

Question

首先，这不是以下内容的重复： 枚举字母表的最快方法

因为我需要获取所有任意（可变）语言的字母表中的字符，并且按正确的顺序排列。

如果不知道每种可能的文化/语言的字母表，我该如何做到这一点？ 例如，System.Gobalization.Cultureinfo 包含有关日期格式、排序方法和代码页信息的信息。但不是关于字母表本身的信息。 此外，'A' 到 'Z' 的排序迭代是行不通的，因为例如德语有 äÖÜ 之类的字符，这些字符在代码页编号中位于 'Z' 之后，但在排序时位于 aou 后面。

我可以以某种方式使用代码页来获取所有字符，并以某种方式对它们进行排序吗？ 我所说的“所有字符”是指所有字母，包括数字，但不包括标点符号。 并且可能只有大写异或小写。

Answer 1

首先，我要说的是，我同意其他人的说法。您认为字符 é 是有效的美国英语字符吗？它经常被使用，但它不在普通的“az”中。

也就是说，这里有一些代码（VB2010）。此代码调用非托管函数 GetLocaleInfoW 并请求包含 Unicode 代码点范围的 LOCALESIGNATURE 结构。此信息用于确定给定字体所需的范围。

Char 结构不支持所有 Unicode 代码点，因此该函数返回 String。在该链接底部查找“代理对”以获取更多信息。

不幸的是，这段代码并不能完成您想要的一切。例如，经常引用的芬兰语没有字母 W，但在 Windows 中，该字符存在于有效代码点范围内。我不知道有什么办法可以深入了解这一点。

Option Strict On
Option Explicit On

Imports System.Runtime.InteropServices

Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        ''//Create our helper function
        Dim UCR As New UnicodeCharRanges()

        ''//Get our ranges for ja-JP
        Dim Ranges = UCR.GetUnicodeRanges("ja-JP")
        If Ranges IsNot Nothing Then
            ''//Get our characters (strings actually)
            Dim Chars = UCR.GetCharactersForUnicodeRanges(Ranges)
            Trace.WriteLine(Chars.Count) ''//28351

            ''//Include surrogate pairs as letters. .Net does not have a way to determine if these should be considered letters
            Chars = UCR.GetCharactersForUnicodeRanges(Ranges, True)
            Trace.WriteLine(Chars.Count) ''//71615
        End If

        ''//Get our ranges for en-US
        Ranges = UCR.GetUnicodeRanges("en-US")
        If Ranges IsNot Nothing Then
            ''//Get our characters (strings actually)
            Dim Chars = UCR.GetCharactersForUnicodeRanges(Ranges)
            Trace.WriteLine(Chars.Count) ''//117
        End If


    End Sub
End Class
Public Class UnicodeCharRanges
#Region " Unmanaged "
    <DllImport("kernel32.dll", SetLastError:=True, CharSet:=CharSet.Unicode)> _
    Private Shared Function GetLocaleInfoW(ByVal locale As Integer, ByVal LCType As Integer, ByRef lpLCData As LOCALESIGNATURE, ByVal cchData As Integer) As Integer
    End Function
    Private LOCALE_FONTSIGNATURE As Integer = &H58
    <StructLayout(LayoutKind.Sequential)>
    Private Structure LOCALESIGNATURE
        <MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst:=4)> Dim lsUsb() As Integer
        <MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst:=2)> Dim lsCsbDefault() As Integer
        <MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst:=2)> Dim lsCsbSupported() As Integer
        Public Sub Initialize()
            ReDim lsUsb(3)
            ReDim lsCsbDefault(1)
            ReDim lsCsbSupported(1)
        End Sub
    End Structure
#End Region
#Region " Locals "
    Private AllRanges As List(Of UnicodeRangeInfo)
#End Region
    Private Sub LoadRanges()
        ''//Ranges from http://msdn.microsoft.com/en-us/library/dd374090%28VS.85%29.aspx
        AllRanges = New List(Of UnicodeRangeInfo)
        AllRanges.Add(New UnicodeRangeInfo(0, &H0, &H7F, "Basic Latin"))
        AllRanges.Add(New UnicodeRangeInfo(1, &H80, &HFF, "Latin-1 Supplement"))
        AllRanges.Add(New UnicodeRangeInfo(2, &H100, &H17F, "Latin Extended-A"))
        AllRanges.Add(New UnicodeRangeInfo(3, &H180, &H24F, "Latin Extended-B"))
        AllRanges.Add(New UnicodeRangeInfo(4, &H250, &H2AF, "IPA Extensions"))
        AllRanges.Add(New UnicodeRangeInfo(4, &H1D00, &H1D7F, "Phonetic Extensions"))
        AllRanges.Add(New UnicodeRangeInfo(4, &H1D80, &H1DBF, "Phonetic Extensions Supplement"))
        AllRanges.Add(New UnicodeRangeInfo(5, &H2B0, &H2FF, "Spacing Modifier Letters"))
        AllRanges.Add(New UnicodeRangeInfo(5, &HA700, &HA71F, "Modifier Tone Letters"))
        AllRanges.Add(New UnicodeRangeInfo(6, &H300, &H36F, "Combining Diacritical Marks"))
        AllRanges.Add(New UnicodeRangeInfo(6, &H1DC0, &H1DFF, "Combining Diacritical Marks Supplement"))
        AllRanges.Add(New UnicodeRangeInfo(7, &H370, &H3FF, "Greek and Coptic"))
        AllRanges.Add(New UnicodeRangeInfo(8, &H2C80, &H2CFF, "Coptic"))
        AllRanges.Add(New UnicodeRangeInfo(9, &H400, &H4FF, "Cyrillic"))
        AllRanges.Add(New UnicodeRangeInfo(9, &H500, &H52F, "Cyrillic Supplement"))
        AllRanges.Add(New UnicodeRangeInfo(9, &H2DE0, &H2DFF, "Cyrillic Extended-A"))
        AllRanges.Add(New UnicodeRangeInfo(9, &HA640, &HA69F, "Cyrillic Extended-B"))
        AllRanges.Add(New UnicodeRangeInfo(10, &H530, &H58F, "Armenian"))
        AllRanges.Add(New UnicodeRangeInfo(11, &H590, &H5FF, "Hebrew"))
        AllRanges.Add(New UnicodeRangeInfo(12, &HA500, &HA63F, "&hVai"))
        AllRanges.Add(New UnicodeRangeInfo(13, &H600, &H6FF, "Arabic"))
        AllRanges.Add(New UnicodeRangeInfo(13, &H750, &H77F, "Arabic Supplement"))
        AllRanges.Add(New UnicodeRangeInfo(14, &H7C0, &H7FF, "NKo"))
        AllRanges.Add(New UnicodeRangeInfo(15, &H900, &H97F, "Devanagari"))
        AllRanges.Add(New UnicodeRangeInfo(16, &H980, &H9FF, "Bengali"))
        AllRanges.Add(New UnicodeRangeInfo(17, &HA00, &HA7F, "Gurmukhi"))
        AllRanges.Add(New UnicodeRangeInfo(18, &HA80, &HAFF, "Gujarati"))
        AllRanges.Add(New UnicodeRangeInfo(19, &HB00, &HB7F, "Oriya"))
        AllRanges.Add(New UnicodeRangeInfo(20, &HB80, &HBFF, "Tamil"))
        AllRanges.Add(New UnicodeRangeInfo(21, &HC00, &HC7F, "Telugu"))
        AllRanges.Add(New UnicodeRangeInfo(22, &HC80, &HCFF, "Kannada"))
        AllRanges.Add(New UnicodeRangeInfo(23, &HD00, &HD7F, "Malayalam"))
        AllRanges.Add(New UnicodeRangeInfo(24, &HE00, &HE7F, "Thai"))
        AllRanges.Add(New UnicodeRangeInfo(25, &HE80, &HEFF, "Lao"))
        AllRanges.Add(New UnicodeRangeInfo(26, &H10A0, &H10FF, "Georgian"))
        AllRanges.Add(New UnicodeRangeInfo(26, &H2D00, &H2D2F, "Georgian Supplement"))
        AllRanges.Add(New UnicodeRangeInfo(27, &H1B00, &H1B7F, "Balinese"))
        AllRanges.Add(New UnicodeRangeInfo(28, &H1100, &H11FF, "Hangul Jamo"))
        AllRanges.Add(New UnicodeRangeInfo(29, &H1E00, &H1EFF, "Latin Extended Additional"))
        AllRanges.Add(New UnicodeRangeInfo(29, &H2C60, &H2C7F, "Latin Extended-C"))
        AllRanges.Add(New UnicodeRangeInfo(29, &HA720, &HA7FF, "Latin Extended-D"))
        AllRanges.Add(New UnicodeRangeInfo(30, &H1F00, &H1FFF, "Greek Extended"))
        AllRanges.Add(New UnicodeRangeInfo(31, &H2000, &H206F, "General Punctuation"))
        AllRanges.Add(New UnicodeRangeInfo(31, &H2E00, &H2E7F, "Supplemental Punctuation"))
        AllRanges.Add(New UnicodeRangeInfo(32, &H2070, &H209F, "Superscripts And Subscripts"))
        AllRanges.Add(New UnicodeRangeInfo(33, &H20A0, &H20CF, "Currency Symbols"))
        AllRanges.Add(New UnicodeRangeInfo(34, &H20D0, &H20FF, "Combining Diacritical Marks For Symbols"))
        AllRanges.Add(New UnicodeRangeInfo(35, &H2100, &H214F, "Letterlike Symbols"))
        AllRanges.Add(New UnicodeRangeInfo(36, &H2150, &H218F, "Number Forms"))
        AllRanges.Add(New UnicodeRangeInfo(37, &H2190, &H21FF, "Arrows"))
        AllRanges.Add(New UnicodeRangeInfo(37, &H27F0, &H27FF, "Supplemental Arrows-A"))
        AllRanges.Add(New UnicodeRangeInfo(37, &H2900, &H297F, "Supplemental Arrows-B"))
        AllRanges.Add(New UnicodeRangeInfo(37, &H2B00, &H2BFF, "Miscellaneous Symbols and Arrows"))
        AllRanges.Add(New UnicodeRangeInfo(38, &H2200, &H22FF, "Mathematical Operators"))
        AllRanges.Add(New UnicodeRangeInfo(38, &H27C0, &H27EF, "Miscellaneous Mathematical Symbols-A"))
        AllRanges.Add(New UnicodeRangeInfo(38, &H2980, &H29FF, "Miscellaneous Mathematical Symbols-B"))
        AllRanges.Add(New UnicodeRangeInfo(38, &H2A00, &H2AFF, "Supplemental Mathematical Operators"))
        AllRanges.Add(New UnicodeRangeInfo(39, &H2300, &H23FF, "Miscellaneous Technical"))
        AllRanges.Add(New UnicodeRangeInfo(40, &H2400, &H243F, "Control Pictures"))
        AllRanges.Add(New UnicodeRangeInfo(41, &H2440, &H245F, "Optical Character Recognition"))
        AllRanges.Add(New UnicodeRangeInfo(42, &H2460, &H24FF, "Enclosed Alphanumerics"))
        AllRanges.Add(New UnicodeRangeInfo(43, &H2500, &H257F, "Box Drawing"))
        AllRanges.Add(New UnicodeRangeInfo(44, &H2580, &H259F, "Block Elements"))
        AllRanges.Add(New UnicodeRangeInfo(45, &H25A0, &H25FF, "Geometric Shapes"))
        AllRanges.Add(New UnicodeRangeInfo(46, &H2600, &H26FF, "Miscellaneous Symbols"))
        AllRanges.Add(New UnicodeRangeInfo(47, &H2700, &H27BF, "Dingbats"))
        AllRanges.Add(New UnicodeRangeInfo(48, &H3000, &H303F, "CJK Symbols And Punctuation"))
        AllRanges.Add(New UnicodeRangeInfo(49, &H3040, &H309F, "Hiragana"))
        AllRanges.Add(New UnicodeRangeInfo(50, &H30A0, &H30FF, "Katakana"))
        AllRanges.Add(New UnicodeRangeInfo(50, &H31F0, &H31FF, "Katakana Phonetic Extensions"))
        AllRanges.Add(New UnicodeRangeInfo(51, &H3100, &H312F, "Bopomofo"))
        AllRanges.Add(New UnicodeRangeInfo(51, &H31A0, &H31BF, "Bopomofo Extended"))
        AllRanges.Add(New UnicodeRangeInfo(52, &H3130, &H318F, "Hangul Compatibility Jamo"))
        AllRanges.Add(New UnicodeRangeInfo(53, &HA840, &HA87F, "Phags-pa"))
        AllRanges.Add(New UnicodeRangeInfo(54, &H3200, &H32FF, "Enclosed CJK Letters And Months"))
        AllRanges.Add(New UnicodeRangeInfo(55, &H3300, &H33FF, "CJK Compatibility"))
        AllRanges.Add(New UnicodeRangeInfo(56, &HAC00, &HD7AF, "Hangul Syllables"))
        AllRanges.Add(New UnicodeRangeInfo(57, &HD800, &HDFFF, "Non-Plane 0. Note that setting this bit implies that there is at least one supplementary code point beyond the Basic Multilingual Plane (BMP) that is supported by this font. See Surrogates and Supplementary Characters."))
        AllRanges.Add(New UnicodeRangeInfo(58, &H10900, &H1091F, "Phoenician"))
        AllRanges.Add(New UnicodeRangeInfo(59, &H2E80, &H2EFF, "CJK Radicals Supplement"))
        AllRanges.Add(New UnicodeRangeInfo(59, &H2F00, &H2FDF, "Kangxi Radicals"))
        AllRanges.Add(New UnicodeRangeInfo(59, &H2FF0, &H2FFF, "Ideographic Description Characters"))
        AllRanges.Add(New UnicodeRangeInfo(59, &H3190, &H319F, "Kanbun"))
        AllRanges.Add(New UnicodeRangeInfo(59, &H3400, &H4DBF, "CJK Unified Ideographs Extension A"))
        AllRanges.Add(New UnicodeRangeInfo(59, &H4E00, &H9FFF, "CJK Unified Ideographs"))
        AllRanges.Add(New UnicodeRangeInfo(59, &H20000, &H2A6DF, "CJK Unified Ideographs Extension B"))
        AllRanges.Add(New UnicodeRangeInfo(60, &HE000, &HF8FF, "Private Use Area"))
        AllRanges.Add(New UnicodeRangeInfo(61, &H31C0, &H31EF, "CJK Strokes"))
        AllRanges.Add(New UnicodeRangeInfo(61, &HF900, &HFAFF, "CJK Compatibility Ideographs"))
        AllRanges.Add(New UnicodeRangeInfo(61, &H2F800, &H2FA1F, "CJK Compatibility Ideographs Supplement"))
        AllRanges.Add(New UnicodeRangeInfo(62, &HFB00, &HFB4F, "Alphabetic Presentation Forms"))
        AllRanges.Add(New UnicodeRangeInfo(63, &HFB50, &HFDFF, "Arabic Presentation Forms-A"))
        AllRanges.Add(New UnicodeRangeInfo(64, &HFE20, &HFE2F, "Combining Half Marks"))
        AllRanges.Add(New UnicodeRangeInfo(65, &HFE10, &HFE1F, "Vertical Forms"))
        AllRanges.Add(New UnicodeRangeInfo(65, &HFE30, &HFE4F, "CJK Compatibility Forms"))
        AllRanges.Add(New UnicodeRangeInfo(66, &HFE50, &HFE6F, "Small Form Variants"))
        AllRanges.Add(New UnicodeRangeInfo(67, &HFE70, &HFEFF, "Arabic Presentation Forms-B"))
        AllRanges.Add(New UnicodeRangeInfo(68, &HFF00, &HFFEF, "Halfwidth And Fullwidth Forms"))
        AllRanges.Add(New UnicodeRangeInfo(69, &HFFF0, &HFFFF, "Specials"))
        AllRanges.Add(New UnicodeRangeInfo(70, &HF00, &HFFF, "Tibetan"))
        AllRanges.Add(New UnicodeRangeInfo(71, &H700, &H74F, "Syriac"))
        AllRanges.Add(New UnicodeRangeInfo(72, &H780, &H7BF, "Thaana"))
        AllRanges.Add(New UnicodeRangeInfo(73, &HD80, &HDFF, "Sinhala"))
        AllRanges.Add(New UnicodeRangeInfo(74, &H1000, &H109F, "Myanmar"))
        AllRanges.Add(New UnicodeRangeInfo(75, &H1200, &H137F, "Ethiopic"))
        AllRanges.Add(New UnicodeRangeInfo(75, &H1380, &H139F, "Ethiopic Supplement"))
        AllRanges.Add(New UnicodeRangeInfo(75, &H2D80, &H2DDF, "Ethiopic Extended"))
        AllRanges.Add(New UnicodeRangeInfo(76, &H13A0, &H13FF, "Cherokee"))
        AllRanges.Add(New UnicodeRangeInfo(77, &H1400, &H167F, "Unified Canadian Aboriginal Syllabics"))
        AllRanges.Add(New UnicodeRangeInfo(78, &H1680, &H169F, "Ogham"))
        AllRanges.Add(New UnicodeRangeInfo(79, &H16A0, &H16FF, "Runic"))
        AllRanges.Add(New UnicodeRangeInfo(80, &H1780, &H17FF, "Khmer"))
        AllRanges.Add(New UnicodeRangeInfo(80, &H19E0, &H19FF, "Khmer Symbols"))
        AllRanges.Add(New UnicodeRangeInfo(81, &H1800, &H18AF, "Mongolian"))
        AllRanges.Add(New UnicodeRangeInfo(82, &H2800, &H28FF, "Braille Patterns"))
        AllRanges.Add(New UnicodeRangeInfo(83, &HA000, &HA48F, "Yi Syllables"))
        AllRanges.Add(New UnicodeRangeInfo(83, &HA490, &HA4CF, "Yi Radicals"))
        AllRanges.Add(New UnicodeRangeInfo(84, &H1700, &H171F, "Tagalog"))
        AllRanges.Add(New UnicodeRangeInfo(84, &H1720, &H173F, "Hanunoo"))
        AllRanges.Add(New UnicodeRangeInfo(84, &H1740, &H175F, "Buhid"))
        AllRanges.Add(New UnicodeRangeInfo(84, &H1760, &H177F, "Tagbanwa"))
        AllRanges.Add(New UnicodeRangeInfo(85, &H10300, &H1032F, "Old Italic"))
        AllRanges.Add(New UnicodeRangeInfo(86, &H10330, &H1034F, "Gothic"))
        AllRanges.Add(New UnicodeRangeInfo(87, &H10400, &H1044F, "Deseret"))
        AllRanges.Add(New UnicodeRangeInfo(88, &H1D000, &H1D0FF, "Byzantine Musical Symbols"))
        AllRanges.Add(New UnicodeRangeInfo(88, &H1D100, &H1D1FF, "Musical Symbols"))
        AllRanges.Add(New UnicodeRangeInfo(88, &H1D200, &H1D24F, "Ancient Greek Musical Notation"))
        AllRanges.Add(New UnicodeRangeInfo(89, &H1D400, &H1D7FF, "Mathematical Alphanumeric Symbols"))
        AllRanges.Add(New UnicodeRangeInfo(90, &HFF000, &HFFFFD, "Private Use (plane 15)"))
        AllRanges.Add(New UnicodeRangeInfo(90, &H100000, &H10FFFD, "Private Use (plane 16)"))
        AllRanges.Add(New UnicodeRangeInfo(91, &HFE00, &HFE0F, "Variation Selectors"))
        AllRanges.Add(New UnicodeRangeInfo(91, &HE0100, &HE01EF, "Variation Selectors Supplement"))
        AllRanges.Add(New UnicodeRangeInfo(92, &HE0000, &HE007F, "Tags"))
        AllRanges.Add(New UnicodeRangeInfo(93, &H1900, &H194F, "Limbu"))
        AllRanges.Add(New UnicodeRangeInfo(94, &H1950, &H197F, "Tai Le"))
        AllRanges.Add(New UnicodeRangeInfo(95, &H1980, &H19DF, "New Tai Lue"))
        AllRanges.Add(New UnicodeRangeInfo(96, &H1A00, &H1A1F, "Buginese"))
        AllRanges.Add(New UnicodeRangeInfo(97, &H2C00, &H2C5F, "Glagolitic"))
        AllRanges.Add(New UnicodeRangeInfo(98, &H2D30, &H2D7F, "Tifinagh"))
        AllRanges.Add(New UnicodeRangeInfo(99, &H4DC0, &H4DFF, "Yijing Hexagram Symbols"))
        AllRanges.Add(New UnicodeRangeInfo(100, &HA800, &HA82F, "Syloti Nagri"))
        AllRanges.Add(New UnicodeRangeInfo(101, &H10000, &H1007F, "Linear B Syllabary"))
        AllRanges.Add(New UnicodeRangeInfo(101, &H10080, &H100FF, "Linear B Ideograms"))
        AllRanges.Add(New UnicodeRangeInfo(101, &H10100, &H1013F, "Aegean Numbers"))
        AllRanges.Add(New UnicodeRangeInfo(102, &H10140, &H1018F, "Ancient Greek Numbers"))
        AllRanges.Add(New UnicodeRangeInfo(103, &H10380, &H1039F, "Ugaritic"))
        AllRanges.Add(New UnicodeRangeInfo(104, &H103A0, &H103DF, "Old Persian"))
        AllRanges.Add(New UnicodeRangeInfo(105, &H10450, &H1047F, "Shavian"))
        AllRanges.Add(New UnicodeRangeInfo(106, &H10480, &H104AF, "Osmanya"))
        AllRanges.Add(New UnicodeRangeInfo(107, &H10800, &H1083F, "Cypriot Syllabary"))
        AllRanges.Add(New UnicodeRangeInfo(108, &H10A00, &H10A5F, "Kharoshthi"))
        AllRanges.Add(New UnicodeRangeInfo(109, &H1D300, &H1D35F, "Tai Xuan Jing Symbols"))
        AllRanges.Add(New UnicodeRangeInfo(110, &H12000, &H123FF, "Cuneiform"))
        AllRanges.Add(New UnicodeRangeInfo(110, &H12400, &H1247F, "Cuneiform Numbers and Punctuation"))
        AllRanges.Add(New UnicodeRangeInfo(111, &H1D360, &H1D37F, "Counting Rod Numerals"))
        AllRanges.Add(New UnicodeRangeInfo(112, &H1B80, &H1BBF, "Sundanese"))
        AllRanges.Add(New UnicodeRangeInfo(113, &H1C00, &H1C4F, "Lepcha"))
        AllRanges.Add(New UnicodeRangeInfo(114, &H1C50, &H1C7F, "Ol Chiki"))
        AllRanges.Add(New UnicodeRangeInfo(115, &HA880, &HA8DF, "Saurashtra"))
        AllRanges.Add(New UnicodeRangeInfo(116, &HA900, &HA92F, "Kayah Li"))
        AllRanges.Add(New UnicodeRangeInfo(117, &HA930, &HA95F, "Rejang"))
        AllRanges.Add(New UnicodeRangeInfo(118, &HAA00, &HAA5F, "Cham"))
        AllRanges.Add(New UnicodeRangeInfo(119, &H10190, &H101CF, "hAncient Symbols"))
        AllRanges.Add(New UnicodeRangeInfo(120, &H101D0, &H101FF, "Phaistos Disc"))
        AllRanges.Add(New UnicodeRangeInfo(121, &H10280, &H1029F, "Lycian"))
        AllRanges.Add(New UnicodeRangeInfo(121, &H102A0, &H102DF, "Carian"))
        AllRanges.Add(New UnicodeRangeInfo(121, &H10920, &H1093F, "Lydian"))
        AllRanges.Add(New UnicodeRangeInfo(122, &H1F000, &H1F02F, "Mahjong Tiles"))
        AllRanges.Add(New UnicodeRangeInfo(122, &H1F030, &H1F09F, "Domino Tiles"))
    End Sub
    Sub New()
        LoadRanges()
    End Sub
    Public Function GetCharactersForUnicodeRanges(ByVal ranges As List(Of UnicodeRangeInfo), Optional ByVal returnSurrogatePairs As Boolean = False) As List(Of String)
        ''//The Char structure cannot represent all Unicode characters so we need to return strings. See "Surrogate pairs" at the bottom of http://www.yoda.arachsys.com/csharp/unicode.html
        Dim Ret As New List(Of String)
        Dim S As String
        Dim C As Char
        ''//Loop through all of the ranges
        For Each R In ranges
            ''//Loop from start to end
            For I = R.StartRange To R.EndRange
                ''//Convert the integer to either a char or a surrogate pair string
                S = Char.ConvertFromUtf32(I)
                ''//See if the character is a valid Char
                If Char.TryParse(S, C) Then
                    ''//See if the Char is a letter
                    If Char.IsLetter(C) Then Ret.Add(C)
                ElseIf returnSurrogatePairs Then
                    ''//If asked to also return surrogate pairs then do so
                    Ret.Add(S)
                End If
            Next
        Next

        Return Ret
    End Function
    Public Function GetUnicodeRanges(ByVal cultureName As String) As List(Of UnicodeRangeInfo)
        ''//Get the culture info for the given locale
        Dim CI As New System.Globalization.CultureInfo(cultureName)

        ''//Create and init our structure that will get passed
        Dim FI As New LOCALESIGNATURE()
        FI.Initialize()

        ''//Determine the size of our structure
        Dim SI = Marshal.SizeOf(FI)

        ''//Call the unmanaged function
        Dim Result As Integer = GetLocaleInfoW(CI.LCID, LOCALE_FONTSIGNATURE, FI, SI)
        If Result = 0 Then
            ''//If we get a zero then there's an error. This should call GetLastError ideally
            Return Nothing
        Else
            ''//The lsUsb field represents a 128 bit value but we pass it into the unmanaged function as an array of 4 integers.
            ''//The code below converts the array of integers to a giant binary string.
            ''//There are of course better ways to do this that will save 5ms but I will leave that to you
            Dim Usb = StrReverse(String.Format("{0}{1}{2}{3}",
                                               Convert.ToString(FI.lsUsb(3), 2).PadLeft(32, "0"c),
                                               Convert.ToString(FI.lsUsb(2), 2).PadLeft(32, "0"c),
                                               Convert.ToString(FI.lsUsb(1), 2).PadLeft(32, "0"c),
                                               Convert.ToString(FI.lsUsb(0), 2).PadLeft(32, "0"c)))

            ''//This will be our return ranges
            Dim LocaleRanges As New List(Of UnicodeRangeInfo)

            Dim loopI As Integer

            ''//Loop through the bits
            ''//Technically the last couple of bits aren't supposed to be used but there is no value in UnicodeRangeInfo for them anyway so it does not matter
            For I = 0 To (Usb.Length - 1)
                ''//This is to stop the compiler complaining about lambda expressions
                loopI = I

                ''//If the bit is set
                If Usb(I) = "1"c Then
                    ''//Find all ranges in the master range list with that bit set
                    LocaleRanges.AddRange(AllRanges.FindAll(Function(n) n.Bit = loopI))
                End If
            Next
            Return LocaleRanges
        End If
    End Function

    Public Structure UnicodeRangeInfo
        Public Property Name As String
        Public Property StartRange As Integer
        Public Property EndRange As Integer
        Public Property Bit As Integer
        Public Sub New(ByVal bit As Integer, ByVal startRange As Integer, ByVal endRange As Integer, ByVal name As String)
            Me.Bit = bit
            Me.StartRange = startRange
            Me.EndRange = endRange
            Me.Name = name
        End Sub
        Public Overrides Function ToString() As String
            Return String.Format("{0}-{1} : {2}", Convert.ToString(Me.StartRange, 16).PadLeft(8, "0"c), Convert.ToString(Me.EndRange, 16).PadLeft(8, "0"c), Me.Name)
        End Function
    End Structure
End Class

Answer 2

我不认为.Net框架提供了你想要的东西。首先，并非所有语言都有西方意义上的字母。其次，即使您将覆盖范围限制为那些具有字母表的语言，迭代代码页的内容也不起作用，因为许多代码页覆盖多种语言（例如，CP 1252 覆盖主要的西欧语言）。第三，Windows 上最近支持的一些语言没有代码页。我认为除了先验了解您感兴趣的语言的字母表之外，没有其他解决方案。

也许如果您解释了您想要实现的目标，可能会建议更好的解决方案。

Answer 3

如果您想要枚举字母表的原因是为了生成索引，那么您可以使用 Windows.Globalization.Collat​​ion.CharacterGroupings