SortVersion Clase

Definición

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)

Herencia

Object

SortVersion

Atributos

SerializableAttribute

Implementaciones

IEquatable<SortVersion>

Ejemplos

El ejemplo siguiente contiene una parte del código fuente de una aplicación que usa la SortVersion clase para asegurarse de que los nombres nativos de RegionInfo los objetos se ordenan correctamente para el sistema actual y la referencia cultural actual. Usa los BinaryReader objetos y BinaryWriter para almacenar y recuperar datos ordenados de un archivo de datos denominado Regions.dat en lugar de recuperar y ordenar datos cada vez que se ejecuta la aplicación. En primer lugar, el ejemplo comprueba si el archivo de datos existe. Si no lo hace, crea los datos y establece la reindex marca , lo que indica que los datos se deben recurrir y guardar de nuevo. De lo contrario, recupera los datos y compara el objeto guardado SortVersion con el SortVersion objeto de la referencia cultural actual en el sistema actual. Si no son iguales o si la reindex marca se había establecido anteriormente, recurre a los RegionInfo datos.

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

Comentarios

Para obtener más información sobre esta API, consulte Comentarios complementarios de api para SortVersion.

Constructores

Propiedades

Métodos

Operadores

Se aplica a

Consulte también

• Version