ResXResourceReader.UseResXDataNodes 屬性

參考

定義

命名空間:: System.Resources

組件:: System.Windows.Forms.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

取得或設定值，指出讀取目前的 XML 資源檔或資料流時，是否會傳回 ResXDataNode 物件。

public:
 property bool UseResXDataNodes { bool get(); void set(bool value); };

public bool UseResXDataNodes { get; set; }

member this.UseResXDataNodes : bool with get, set

Public Property UseResXDataNodes As Boolean

屬性值

Boolean

如果擷取資源資料節點，則為 true，但如果忽略資源資料節點，則為 false。

例外狀況

InvalidOperationException

在設定作業中，資源檔或資料流的列舉值已開啟。

範例

下列範例會列舉並顯示 XML 檔案中的資源專案。一開始，會設定為 false ，UseResXDataNodes以在資源檔中顯示數據和元數據專案。第二個列舉的設定true為 UseResXDataNodes ，以便將資源數據元素當做 ResXDataNode 對象傳回。

#using <System.dll>
#using <System.Windows.Forms.dll>

using namespace System;
using namespace System::Collections;
using namespace System::Resources;
using namespace System::ComponentModel::Design;

namespace UseDataNodesExample
{
    public ref class Program
    {
    public:
        static void Main()
        {
            Console::WriteLine("\nEnumerating as data items...");
            EnumResourceItems("Resource1.resx", false);

            Console::WriteLine("\nEnumerating as data nodes...");
            EnumResourceItems("Resource1.resx", true);
        }

        static void EnumResourceItems(String^ resxFile, bool useDataNodes)
        {
            ResXResourceReader^ reader = gcnew ResXResourceReader(resxFile);

            reader->UseResXDataNodes = useDataNodes;

            // Enumerate using IEnumerable.GetEnumerator().
            Console::WriteLine("\n  Default enumerator:");
            for each (DictionaryEntry entry in reader)
            {
                ShowResourceItem(entry, useDataNodes);
            }

            // Enumerate using GetMetadataEnumerator()
            IDictionaryEnumerator^ metadataEnumerator = reader->GetMetadataEnumerator();

            Console::WriteLine("\n  MetadataEnumerator:");
            while (metadataEnumerator->MoveNext())
            {
                ShowResourceItem(metadataEnumerator->Entry, useDataNodes);
            }

            // Enumerate using GetEnumerator()
            IDictionaryEnumerator^ enumerator = reader->GetEnumerator();

            Console::WriteLine("\n  Enumerator:");
            while (enumerator->MoveNext())
            {
                ShowResourceItem(enumerator->Entry, useDataNodes);
            }
            delete reader;
        }

        static void ShowResourceItem(DictionaryEntry entry, bool isDataNode)
        {
            // Use a nullptr type resolver.
            ITypeResolutionService^ typeres = nullptr;
            ResXDataNode^ dnode;

            if (isDataNode)
            {
                // Display from node info.
                dnode = (ResXDataNode^)entry.Value;
                Console::WriteLine("  {0}={1}", dnode->Name, dnode->GetValue(typeres));
            }
            else
            {
                // Display as DictionaryEntry info.
                Console::WriteLine("  {0}={1}", entry.Key, entry.Value);
            }
        }
    };
}

int main()
{
    UseDataNodesExample::Program::Main();
}
// The example program will have the following output:
//
// Enumerating as data items...
//
//   Default enumerator:
//   DataSample=Sample DATA value
//
//   MetadataEnumerator:
//   MetadataSample=Sample METADATA value
//
//   Enumerator:
//   DataSample=Sample DATA value
//
// Enumerating as data nodes...
//
//   Default enumerator:
//   DataSample=Sample DATA value
//   MetadataSample=Sample METADATA value
//
//   MetadataEnumerator:
//
//   Enumerator:
//   DataSample=Sample DATA value
//   MetadataSample=Sample METADATA value

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

namespace UseDataNodesExample
{
    public class Program
    {
        public static void Main()
        {
            Console.WriteLine("\nEnumerating as data items...");
            EnumResourceItems("Resource1.resx", false);

            Console.WriteLine("\nEnumerating as data nodes...");
            EnumResourceItems("Resource1.resx", true);
        }

        public static void EnumResourceItems(string resxFile, bool useDataNodes)
        {
            using (ResXResourceReader reader = new ResXResourceReader(resxFile))
            {
                reader.UseResXDataNodes = useDataNodes;

                // Enumerate using IEnumerable.GetEnumerator().
                Console.WriteLine("\n  Default enumerator:");
                foreach (DictionaryEntry entry in reader)
                {
                    ShowResourceItem(entry, useDataNodes);
                }

                // Enumerate using GetMetadataEnumerator()
                IDictionaryEnumerator metadataEnumerator = reader.GetMetadataEnumerator();

                Console.WriteLine("\n  MetadataEnumerator:");
                while (metadataEnumerator.MoveNext())
                {
                    ShowResourceItem(metadataEnumerator.Entry, useDataNodes);
                }

                // Enumerate using GetEnumerator()
                IDictionaryEnumerator enumerator = reader.GetEnumerator();

                Console.WriteLine("\n  Enumerator:");
                while (enumerator.MoveNext())
                {
                    ShowResourceItem(enumerator.Entry, useDataNodes);
                }
            }
        }

        public static void ShowResourceItem(DictionaryEntry entry, bool isDataNode)
        {
            // Use a null type resolver.
            ITypeResolutionService typeres = null;
            ResXDataNode dnode;

            if (isDataNode)
            {
                // Display from node info.
                dnode = (ResXDataNode)entry.Value;
                Console.WriteLine("  {0}={1}", dnode.Name, dnode.GetValue(typeres));
            }
            else
            {
                // Display as DictionaryEntry info.
                Console.WriteLine("  {0}={1}", entry.Key, entry.Value);
            }
        }
    }
}

// The example program will have the following output:
//
// Enumerating as data items...
//
//   Default enumerator:
//   DataSample=Sample DATA value
//
//   MetadataEnumerator:
//   MetadataSample=Sample METADATA value
//
//   Enumerator:
//   DataSample=Sample DATA value
//
// Enumerating as data nodes...
//
//   Default enumerator:
//   DataSample=Sample DATA value
//   MetadataSample=Sample METADATA value
//
//   MetadataEnumerator:
//
//   Enumerator:
//   DataSample=Sample DATA value
//   MetadataSample=Sample METADATA value

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

Namespace UseDataNodesExample
    Public Class Program
        Public Shared Sub Main()
            Console.WriteLine(Environment.NewLine + "Enumerating as data items...")
            EnumResourceItems("Resource1.resx", False)

            Console.WriteLine(Environment.NewLine + "Enumerating as data nodes...")
            EnumResourceItems("Resource1.resx", True)
        End Sub

        Public Shared Sub EnumResourceItems(resxFile As String, useDataNodes As Boolean)
            Using reader As New ResXResourceReader(resxFile)
                reader.UseResXDataNodes = useDataNodes

                ' Enumerate using IEnumerable.GetEnumerator().
                Console.WriteLine(Environment.NewLine + "  Default enumerator:")
                For Each entry As DictionaryEntry In reader
                    ShowResourceItem(entry, useDataNodes)
                Next entry

                ' Enumerate using GetMetadataEnumerator()
                Dim metadataEnumerator As IDictionaryEnumerator = reader.GetMetadataEnumerator()

                Console.WriteLine(Environment.NewLine + "  MetadataEnumerator:")
                While metadataEnumerator.MoveNext()
                    ShowResourceItem(metadataEnumerator.Entry, useDataNodes)
                End While

                ' Enumerate using GetEnumerator()
                Dim enumerator As IDictionaryEnumerator = reader.GetEnumerator()

                Console.WriteLine(Environment.NewLine + "  Enumerator:")
                While enumerator.MoveNext()
                    ShowResourceItem(enumerator.Entry, useDataNodes)
                End While
            End Using
        End Sub

        Public Shared Sub ShowResourceItem(entry As DictionaryEntry, isDataNode As Boolean)
            ' Use a Nothing type resolver.
            Dim typeres As ITypeResolutionService = Nothing
            Dim dnode As ResXDataNode

            If isDataNode Then
                ' Display from node info.
                dnode = CType(entry.Value, ResXDataNode)
                Console.WriteLine("  {0}={1}", dnode.Name, dnode.GetValue(typeres))
            Else
                ' Display as DictionaryEntry info.
                Console.WriteLine("  {0}={1}", entry.Key, entry.Value)
            End If
        End Sub
    End Class
End Namespace

' The example program will have the following output:
'
' Enumerating as data items...
'
'   Default enumerator:
'   DataSample=Sample DATA value
'
'   MetadataEnumerator:
'   MetadataSample=Sample METADATA value
'
'   Enumerator:
'   DataSample=Sample DATA value
'
' Enumerating as data nodes...
'
'   Default enumerator:
'   DataSample=Sample DATA value
'   MetadataSample=Sample METADATA value
'
'   MetadataEnumerator:
'
'   Enumerator:
'   DataSample=Sample DATA value
'   MetadataSample=Sample METADATA value

範例所使用的資源 XML 檔案包含一個數據節點和一個元數據節點。若要搭配上述範例使用 XML 檔案，請複製下列文字，並將它儲存至名為 Resource1.resx 的檔案。

<?xml version="1.0" encoding="utf-8"?>  
<root>  
  <resheader name="resmimetype">  
    <value>text/microsoft-resx</value>  
  </resheader>  
  <resheader name="version">  
    <value>2.0</value>  
  </resheader>  
  <resheader name="reader">  
    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0,  
           Culture=neutral, PublicKeyToken=b77a5c561934e089  
    </value>  
  </resheader>  
  <resheader name="writer">  
    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0,  
           Culture=neutral, PublicKeyToken=b77a5c561934e089  
    </value>  
  </resheader>  
  <data name="DataSample" xml:space="preserve">  
    <value>Sample DATA value</value>  
  </data>  
  <metadata name="MetadataSample">  
    <value>Sample METADATA value</value>  
  </metadata>  
</root>

備註

您可以在開始列舉資源之前設定 UseResXDataNodes 屬性。根據預設，其值為 false。

適用於

共用方式為

ResXResourceReader.UseResXDataNodes 屬性

定義

屬性值

例外狀況

範例

備註

適用於

其他資源