SortVersion Klasse

Definition

public ref class SortVersion sealed : IEquatable<System::Globalization::SortVersion ^>

public sealed class SortVersion : IEquatable<System.Globalization.SortVersion>

[System.Serializable]
public sealed class SortVersion : IEquatable<System.Globalization.SortVersion>

type SortVersion = class
    interface IEquatable<SortVersion>

[<System.Serializable>]
type SortVersion = class
    interface IEquatable<SortVersion>

Public NotInheritable Class SortVersion
Implements IEquatable(Of SortVersion)

Vererbung

Object

SortVersion

Attribute

SerializableAttribute

Implementiert

IEquatable<SortVersion>

Beispiele

Das folgende Beispiel enthält einen Teil des Quellcodes einer Anwendung, die die SortVersion -Klasse verwendet, um sicherzustellen, dass die systemeigenen Namen von RegionInfo Objekten für das aktuelle System und die aktuelle Kultur entsprechend sortiert werden. Die -Objekte und BinaryWriter werden BinaryReader verwendet, um geordnete Daten aus einer Datendatei namens Regions.dat zu speichern und abzurufen, anstatt bei jeder Ausführung der Anwendung Daten abzurufen und zu sortieren. Im Beispiel wird zunächst überprüft, ob die Datendatei vorhanden ist. Wenn dies nicht der Fall ist, werden die Daten erstellt und das reindex Flag festgelegt, das angibt, dass die Daten erneut abgerufen und gespeichert werden müssen. Andernfalls werden die Daten abgerufen und das gespeicherte SortVersion Objekt mit dem SortVersion -Objekt für die aktuelle Kultur im aktuellen System verglichen. Wenn sie nicht gleich sind oder das reindex Flag zuvor festgelegt wurde, wird auf die RegionInfo Daten zurückgesetzt.

using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;

public class Example : IComparer
{
   private const string FILENAME = @".\Regions.dat";

   private struct Region
   {
      internal Region(string id, string name)
      {
         this.Id = id;
         this.NativeName = name;
      }

      public string Id;
      public string NativeName;

      public override string ToString()
      {
         return this.NativeName;
      }
   }

   public static void Main()
   {
      bool reindex = false;

      Region[] regions;
      SortVersion ver = null;

      // If the data has not been saved, create it.
      if (! File.Exists(FILENAME)) {
         regions = GenerateData();
         ver = CultureInfo.CurrentCulture.CompareInfo.Version;
         reindex = true;
      }
      // Retrieve the existing data.
      else {
         regions = RestoreData(out ver);
      }

      // Determine whether the current ordering is valid; if not, reorder.
      if (reindex || ver != CultureInfo.CurrentCulture.CompareInfo.Version) {
         Array.Sort(regions, new Example());
         // Save newly reordered data.
         SaveData(regions);
      }

      // Continue with application...
   }

   private static Region[] GenerateData()
   {
      List<Region> regions = new List<Region>();

      foreach (var culture in CultureInfo.GetCultures(CultureTypes.AllCultures)) {
         if (culture.IsNeutralCulture | culture.Equals(CultureInfo.InvariantCulture))
            continue;

         RegionInfo region = new RegionInfo(culture.Name);
         regions.Add(new Region(region.Name, region.NativeName));
      }
      return regions.ToArray();
   }

   private static Region[] RestoreData(out SortVersion ver)
   {
      List<Region> regions = new List<Region>();

      BinaryReader rdr = new BinaryReader(File.Open(FILENAME, FileMode.Open));

      int sortVer = rdr.ReadInt32();
      Guid sortId = Guid.Parse(rdr.ReadString());
      ver = new SortVersion(sortVer, sortId);

      string id, name;
      while (rdr.PeekChar() != -1) {
         id = rdr.ReadString();
         name = rdr.ReadString();
         regions.Add(new Region(id, name));
      }
      return regions.ToArray();
   }

   private static void SaveData(Region[] regions)
   {
      SortVersion ver = CultureInfo.CurrentCulture.CompareInfo.Version;

      BinaryWriter wrtr = new BinaryWriter(File.Open(FILENAME, FileMode.Create));
      wrtr.Write(ver.FullVersion);
      wrtr.Write(ver.SortId.ToString());

      foreach (var region in regions) {
         wrtr.Write(region.Id);
         wrtr.Write(region.NativeName);
      }
      wrtr.Close();
   }

   public int Compare(object o1, object o2)
   {
        // Assume that all casts succeed.
        Region r1 = (Region) o1;
        Region r2 = (Region) o2;

        return String.Compare(r1.NativeName, r2.NativeName,
                              StringComparison.CurrentCulture);
   }
}

Imports System.Collections
Imports System.Collections.Generic
Imports System.Globalization
Imports System.IO
Imports System.Text

Public Class Example : Implements IComparer
   Private Const FILENAME As String = ".\Regions.dat"
   
   Private Structure Region
      Friend Sub New(id As String, name As String)
         Me.Id = id
         Me.NativeName = name
      End Sub
      
      Dim Id As String
      Dim NativeName As String
      
      Public Overrides Function ToString() As String
         Return Me.NativeName
      End Function
   End Structure
   
   Public Shared Sub Main()
      Dim reindex As Boolean = False
      
      Dim regions() As Region
      Dim ver As SortVersion = Nothing

      ' If the data has not been saved, create it.
      If Not File.Exists(FILENAME) Then 
         regions = GenerateData()
         ver = CultureInfo.CurrentCulture.CompareInfo.Version  
         reindex = True
      ' Retrieve the existing data.
      Else
         regions = RestoreData(ver)
      End If

      ' Determine whether the current ordering is valid; if not, reorder.
      If reindex OrElse ver <> CultureInfo.CurrentCulture.CompareInfo.Version Then 
         Array.Sort(regions, New Example())      
         ' Save newly reordered data.
         SaveData(regions)
      End If
      
      ' Continue with application...
   End Sub

   Private Shared Function GenerateData() As Region()
      Dim regions As New List(Of Region)()

      For Each culture In CultureInfo.GetCultures(CultureTypes.AllCultures)
         If culture.IsNeutralCulture Or culture.Equals(CultureInfo.InvariantCulture) Then Continue For
            
         Dim region As New RegionInfo(culture.Name)
         regions.Add(New Region(region.Name, region.NativeName))
      Next
      Return regions.ToArray()
   End Function
   
   Private Shared Function RestoreData(ByRef ver As SortVersion) As Region()
      Dim regions As New List(Of Region)
      
      Dim rdr As New BinaryReader(File.Open(FILENAME, FileMode.Open))
      
      Dim sortVer As Integer = rdr.ReadInt32
      Dim sortId As Guid = Guid.Parse(rdr.ReadString())
      ver = New SortVersion(sortVer, sortId)
      
      Dim id As String, name As String
      Do While rdr.PeekChar <> -1
         id = rdr.ReadString()
         name = rdr.ReadString()
         regions.Add(New Region(id, name))      
      Loop
      Return regions.ToArray()
   End Function
   
   Private Shared Sub SaveData(regions As Region())
      Dim ver As SortVersion = CultureInfo.CurrentCulture.CompareInfo.Version

      Dim wrtr As New BinaryWriter(File.Open(FILENAME, FileMode.Create))
      wrtr.Write(ver.FullVersion) 
      wrtr.Write(ver.SortId.ToString()) 
      
      For Each region In regions
         wrtr.Write(region.Id)
         wrtr.Write(region.NativeName)
      Next
      wrtr.Close()
   End Sub

   Private Function SortByNativeName(o1 As Object, o2 As Object) As Integer _
           Implements IComparer.Compare
        ' Assume that all conversions succeed.
        Dim r1 As Region = CType(o1, Region)
        Dim r2 As Region = CType(o2, Region)
        
        Return String.Compare(r1.NativeName, r2.NativeName, 
                              StringComparison.CurrentCulture)         
   End Function
End Class

Hinweise

Weitere Informationen zu dieser API finden Sie unter Zusätzliche API-Hinweise für SortVersion.

Konstruktoren

Eigenschaften

Methoden

Operatoren

Gilt für:

Weitere Informationen

• Version