ResXResourceReader Classe

Definição

public ref class ResXResourceReader : System::Resources::IResourceReader

public ref class ResXResourceReader : IDisposable, System::Collections::IEnumerable, System::Resources::IResourceReader

public class ResXResourceReader : System.Resources.IResourceReader

public class ResXResourceReader : IDisposable, System.Collections.IEnumerable, System.Resources.IResourceReader

type ResXResourceReader = class
    interface IResourceReader
    interface IEnumerable
    interface IDisposable

Public Class ResXResourceReader
Implements IResourceReader

Public Class ResXResourceReader
Implements IDisposable, IEnumerable, IResourceReader

Herança

Object

ResXResourceReader

Implementações

IEnumerable IDisposable IResourceReader

Exemplos

O exemplo a seguir demonstra como usar um ResXResourceReader para iterar por meio dos recursos em um arquivo .resx. Primeiro, o ResXResourceReaderrsxr é criado para o arquivo items.resx. Em seguida, o método GetEnumerator é usado para criar uma IDictionaryEnumerator para iterar por meio dos recursos e exibir o conteúdo no console.

#using <system.windows.forms.dll>
#using <System.dll>

using namespace System;
using namespace System::Resources;
using namespace System::Collections;
void main()
{

   // Create a ResXResourceReader for the file items.resx.
   ResXResourceReader^ rsxr = gcnew ResXResourceReader( "items.resx" );


   // Iterate through the resources and display the contents to the console.
   IEnumerator^ myEnum = rsxr->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      DictionaryEntry^ d = safe_cast<DictionaryEntry^>(myEnum->Current);
      Console::WriteLine( "{0}:\t {1}", d->Key, d->Value );
   }


   //Close the reader.
   rsxr->Close();
}

using System;
using System.Resources;
using System.Collections;

class ReadResXResources
{
   public static void Main()
   {

      // Create a ResXResourceReader for the file items.resx.
      ResXResourceReader rsxr = new ResXResourceReader("items.resx");

      // Iterate through the resources and display the contents to the console.
      foreach (DictionaryEntry d in rsxr)
      {
    Console.WriteLine(d.Key.ToString() + ":\t" + d.Value.ToString());
      }

     //Close the reader.
     rsxr.Close();
   }
}

Imports System.Resources
Imports System.Collections

Class ReadResXResources
   
   Public Shared Sub Main()
      
      ' Create a ResXResourceReader for the file items.resx.
      Dim rsxr As ResXResourceReader
      rsxr = New ResXResourceReader("items.resx")

      ' Iterate through the resources and display the contents to the console.
      Dim d As DictionaryEntry
      For Each d In  rsxr
         Console.WriteLine(d.Key.ToString() + ":" + ControlChars.Tab + d.Value.ToString())
      Next d
      
      'Close the reader.
      rsxr.Close()

   End Sub

End Class

Comentários

A classe ResXResourceReader fornece uma implementação padrão da interface IResourceReader que lê as informações do recurso em um formato XML. Para ler informações de recursos de um formato de recurso binário, use a classe ResourceReader.

Use a classe ResXResourceReader para enumerar recursos em arquivos .resx atravessando o enumerador de dicionário (IDictionaryEnumerator) retornado pelo método GetEnumerator. Você chama os métodos fornecidos por IDictionaryEnumerator para avançar para o próximo recurso e ler o nome e o valor de cada recurso no arquivo .resx.

O exemplo a seguir usa o método GetEnumerator para obter um objeto IDictionaryEnumerator usado para enumerar os recursos em um arquivo .resx. O exemplo inclui uma rotina de CreateResourceFile que cria o arquivo de recurso necessário.

using System;
using System.Collections;
using System.Resources;

public class Example
{
   private const string resxFilename = @".\CountryHeaders.resx";
    
   public static void Main()
   {
      // Create a resource file to read.
      CreateResourceFile();
      
      // Enumerate the resources in the file.
      ResXResourceReader rr = new ResXResourceReader(resxFilename);
      IDictionaryEnumerator dict = rr.GetEnumerator();
      while (dict.MoveNext())
         Console.WriteLine("{0}: {1}", dict.Key, dict.Value);   
   }

   private static void CreateResourceFile()
   {
      ResXResourceWriter rw = new ResXResourceWriter(resxFilename);
      string[] resNames = {"Country", "Population", "Area", 
                           "Capital", "LCity" };
      string[] columnHeaders = { "Country Name", "Population (2010}", 
                                 "Area", "Capital", "Largest City" };
      string[] comments = { "The localized country name", "", 
                            "The area in square miles", "", 
                            "The largest city based on 2010 data" };
      rw.AddResource("Title", "Country Information");
      rw.AddResource("nColumns", resNames.Length);
      for (int ctr = 0; ctr < resNames.Length; ctr++) {
         ResXDataNode node = new ResXDataNode(resNames[ctr], columnHeaders[ctr]);
         node.Comment = comments[ctr];
         rw.AddResource(node);
      }
      rw.Generate();
      rw.Close();
   }
}
// The example displays the following output:
//       Title: Country Information
//       nColumns: 5
//       Country: Country Name
//       Population: Population (2010}
//       Area: Area
//       Capital: Capital
//       LCity: Largest City

Imports System.Collections
Imports System.Resources

Module Example
   Private Const resxFilename As String = ".\CountryHeaders.resx"
     
   Public Sub Main()
      ' Create a resource file to read.
      CreateResourceFile()
      
      ' Enumerate the resources in the file.
      Dim rr As New ResXResourceReader(resxFilename)
      Dim dict As IDictionaryEnumerator = rr.GetEnumerator()
      Do While dict.MoveNext()
         Console.WriteLine("{0}: {1}", dict.Key, dict.Value)   
      Loop
   End Sub
   
   Private Sub CreateResourceFile()
      Dim rw As New ResxResourceWriter(resxFilename)
      Dim resNames() As String = {"Country", "Population", "Area", 
                                  "Capital", "LCity" }
      Dim columnHeaders() As String = { "Country Name", "Population (2010}", 
                                        "Area", "Capital", "Largest City" }
      Dim comments() As String = { "The localized country name", "", 
                                   "The area in square miles", "", 
                                   "The largest city based on 2010 data" }
      rw.AddResource("Title", "Country Information")
      rw.AddResource("nColumns", resNames.Length)
      For ctr As Integer = 0 To resNames.Length - 1
         Dim node As New ResXDataNode(resNames(ctr), columnHeaders(ctr))
         node.Comment = comments(ctr)
         rw.AddResource(node)
      Next
      rw.Generate()
      rw.Close()
   End Sub
End Module
' The example displays the following output:
'       Title: Country Information
'       nColumns: 5
'       Country: Country Name
'       Population: Population (2010}
'       Area: Area
'       Capital: Capital
'       LCity: Largest City

Se a propriedade UseResXDataNodes for true, o valor da propriedade IDictionaryEnumerator.Value será um objeto ResXDataNode em vez do valor do recurso. Isso disponibiliza o comentário de um item de recurso na propriedade ResXDataNode.Comment. O exemplo a seguir define a propriedade UseResXDataNodes para true e enumera os recursos em um arquivo .resx,

using System;
using System.Collections;
using System.ComponentModel.Design;
using System.Resources;

public class Example
{
   private const string resxFilename = @".\CountryHeaders.resx";
    
   public static void Main()
   {
      // Create a resource file to read.
      CreateResourceFile();
      
      // Enumerate the resources in the file.
      ResXResourceReader rr = new ResXResourceReader(resxFilename);
      rr.UseResXDataNodes = true;
      IDictionaryEnumerator dict = rr.GetEnumerator();
      while (dict.MoveNext()) {
         ResXDataNode node = (ResXDataNode) dict.Value;
         Console.WriteLine("{0,-20} {1,-20} {2}", 
                           node.Name + ":", 
                           node.GetValue((ITypeResolutionService) null), 
                           ! String.IsNullOrEmpty(node.Comment) ? "// " + node.Comment : "");
      }
   }

   private static void CreateResourceFile()
   {
      ResXResourceWriter rw = new ResXResourceWriter(resxFilename);
      string[] resNames = {"Country", "Population", "Area", 
                           "Capital", "LCity" };
      string[] columnHeaders = { "Country Name", "Population (2010}", 
                                 "Area", "Capital", "Largest City" };
      string[] comments = { "The localized country name", "", 
                            "The area in square miles", "", 
                            "The largest city based on 2010 data" };
      rw.AddResource("Title", "Country Information");
      rw.AddResource("nColumns", resNames.Length);
      for (int ctr = 0; ctr < resNames.Length; ctr++) {
         ResXDataNode node = new ResXDataNode(resNames[ctr], columnHeaders[ctr]);
         node.Comment = comments[ctr];
         rw.AddResource(node);
      }
      rw.Generate();
      rw.Close();
   }
}
// The example displays the following output:
//    Title:               Country Information
//    nColumns:            5
//    Country:             Country Name         // The localized country name
//    Population:          Population (2010}
//    Area:                Area                 // The area in square miles
//    Capital:             Capital
//    LCity:               Largest City         // The largest city based on 2010 data

Imports System.Collections
Imports System.ComponentModel.Design
Imports System.Resources

Module Example
   Private Const resxFilename As String = ".\CountryHeaders.resx"
     
   Public Sub Main()
      ' Create a resource file to read.
      CreateResourceFile()
      
      ' Enumerate the resources in the file.
      Dim rr As New ResXResourceReader(resxFilename)
      rr.UseResXDataNodes = True
      Dim dict As IDictionaryEnumerator = rr.GetEnumerator()
      Do While dict.MoveNext()
         Dim node As ResXDataNode = DirectCast(dict.Value, ResXDataNode)
         Console.WriteLine("{0,-20} {1,-20} {2}", 
                           node.Name + ":", 
                           node.GetValue(CType(Nothing, ITypeResolutionService)), 
                           If(Not String.IsNullOrEmpty(node.Comment), "// " + node.Comment, ""))
      Loop
   End Sub
   
   Private Sub CreateResourceFile()
      Dim rw As New ResxResourceWriter(resxFilename)
      Dim resNames() As String = {"Country", "Population", "Area", 
                                  "Capital", "LCity" }
      Dim columnHeaders() As String = { "Country Name", "Population (2010}", 
                                        "Area", "Capital", "Largest City" }
      Dim comments() As String = { "The localized country name", "", 
                                   "The area in square miles", "", 
                                   "The largest city based on 2010 data" }
      rw.AddResource("Title", "Country Information")
      rw.AddResource("nColumns", resNames.Length)
      For ctr As Integer = 0 To resNames.Length - 1
         Dim node As New ResXDataNode(resNames(ctr), columnHeaders(ctr))
         node.Comment = comments(ctr)
         rw.AddResource(node)
      Next
      rw.Generate()
      rw.Close()
   End Sub
End Module
' The example displays the following output:
'    Title:               Country Information
'    nColumns:            5
'    Country:             Country Name         // The localized country name
'    Population:          Population (2010}
'    Area:                Area                 // The area in square miles
'    Capital:             Capital
'    LCity:               Largest City         // The largest city based on 2010 data

Se UseResXDataNodes for true, os itens de ResXDataNode na enumeração poderão ser:

• Recursos nomeados junto com seus dados. Nesse caso, a propriedade ResXDataNode.FileRef é null.

• Recursos nomeados juntamente com o nome do arquivo que contém os dados do recurso. Nesse caso, a propriedade ResXDataNode.FileRef retorna um objeto ResXFileRef que fornece informações sobre o recurso, incluindo seu nome de arquivo. Se nomes de arquivo relativos forem usados, você sempre deverá definir a propriedade BasePath para fornecer um ponto de referência para o caminho de arquivo relativo.

Se você quiser recuperar recursos nomeados de um arquivo .resx em vez de enumerar seus recursos, poderá criar uma instância de um objeto ResXResourceSet e chamar seus métodos GetString e GetObject.

Construtores

Propriedades

Métodos

Implantações explícitas de interface

Métodos de Extensão

Aplica-se a

Confira também

• ResXResourceWriter
• criando arquivos de recurso para aplicativos da área de trabalho
• trabalhando com arquivos .resx programaticamente