ResXDataNode Classe

Definição

public ref class ResXDataNode sealed : System::Runtime::Serialization::ISerializable

[System.Serializable]
public sealed class ResXDataNode : System.Runtime.Serialization.ISerializable

[<System.Serializable>]
type ResXDataNode = class
    interface ISerializable

Public NotInheritable Class ResXDataNode
Implements ISerializable

Herança

Object

ResXDataNode

Atributos

SerializableAttribute

Implementações

ISerializable

Exemplos

O exemplo seguinte utiliza o ResXResourceReader.GetEnumerator método para obter um IDictionaryEnumerator objeto que é usado para enumerar os ResXDataNode objetos num ficheiro .resx. O exemplo inclui uma CreateResourceFile rotina que cria o ficheiro de recurso XML necessário.

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", "Estimated population, 2010", 
                            "The area in square miles", "Capital city or chief administrative center", 
                            "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}    // Estimated population, 2010
//    Area:                Area                 // The area in square miles
//    Capital:             Capital              // Capital city or chief administrative center
//    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", "Estimated population, 2010", 
                                   "The area in square miles", "Capital city or chief administrative center", 
                                   "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}    // Estimated population, 2010
'    Area:                Area                 // The area in square miles
'    Capital:             Capital              // Capital city or chief administrative center
'    LCity:               Largest City         // The largest city based on 2010 data

Como a UseResXDataNodes propriedade é true, o valor da IDictionaryEnumerator.Value propriedade é um ResXDataNode objeto e não o valor do recurso. Isto torna o comentário do item de recurso disponível a partir da ResXDataNode.Comment propriedade.

Observações

A ResXDataNode classe suporta a representação de tipos de dados ricos dentro de um ficheiro de recurso. Pode suportar o armazenamento de qualquer objeto num ficheiro de recurso, desde que o objeto suporte serialização e editores de tipos.

Podes criar um ResXDataNode objeto chamando um dos seus construtores de classes sobrecarregados. Pode então adicionar o item ou elemento de recurso a um ficheiro de recurso chamando o ResXResourceWriter.AddResource método.

Para recuperar um objeto existente ResXDataNode , deve enumerar os ResXDataNode objetos num ficheiro de recurso XML instanciando um ResXResourceReader objeto, definindo a ResXResourceReader.UseResXDataNodes propriedade para true, e chamando o ResXResourceReader.GetEnumerator método para obter um enumerador. O exemplo fornece uma ilustração.

Ver também

• Serialização em .NET