XmlEntity.SystemId Propiedad

Referencia

Definición

Espacio de nombres:: System.Xml

Ensamblado:: System.Xml.ReaderWriter.dll

Ensamblado:: System.Xml.dll

Ensamblado:: netstandard.dll

Source:: XmlEntity.cs

Source:: XmlEntity.cs

Source:: XmlEntity.cs

Importante

Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.

Obtiene el valor del identificador de sistema de la declaración de entidad.

public:
 property System::String ^ SystemId { System::String ^ get(); };

public string? SystemId { get; }

public string SystemId { get; }

member this.SystemId : string

Public ReadOnly Property SystemId As String

Valor de propiedad

String

Identificador de sistema de la entidad. Si no hay un identificador del sistema, se devuelve null.

Ejemplos

En el ejemplo siguiente se muestra información sobre las entidades declaradas en el documento XML.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
public ref class Sample
{
public:
   static void DisplayEntities( XmlNamedNodeMap^ nMap )
   {
      for ( int i = 0; i < nMap->Count; i++ )
      {
         XmlEntity^ ent = dynamic_cast<XmlEntity^>(nMap->Item( i ));
         Console::Write( " {0} ", ent->NodeType );
         Console::Write( " {0} ", ent->Name );
         Console::Write( " {0} ", ent->NotationName );
         Console::Write( " {0} ", ent->PublicId );
         Console::Write( " {0} ", ent->SystemId );
         Console::WriteLine();

      }
   }

};

int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->Load( "doment.xml" );
   Console::WriteLine( "Display information on all entities..." );
   XmlNamedNodeMap^ nMap = doc->DocumentType->Entities;
   Sample^ MySample = gcnew Sample;
   MySample->DisplayEntities( nMap );
}

using System;
using System.IO;
using System.Xml;

public class Sample
{
  private const String filename = "doment.xml";

  public static void Main()
  {
     XmlDocument doc = new XmlDocument();
     doc.Load(filename);

     Console.WriteLine("Display information on all entities...");
     XmlNamedNodeMap nMap = doc.DocumentType.Entities;
     DisplayEntities(nMap);
  }

  public static void DisplayEntities(XmlNamedNodeMap nMap)
  {
     for (int i=0; i < nMap.Count; i++)
     {
        XmlEntity ent = (XmlEntity) nMap.Item(i);
        Console.Write("{0} ", ent.NodeType);
        Console.Write("{0} ", ent.Name);
        Console.Write("{0} ", ent.NotationName);
        Console.Write("{0} ", ent.PublicId);
        Console.Write("{0} ", ent.SystemId);
        Console.WriteLine();
     }
  }
}

Imports System.IO
Imports System.Xml

public class Sample

  private const filename as String = "doment.xml"
 
  public shared sub Main()
      
     Dim doc as XmlDocument = new XmlDocument()
     doc.Load(filename)
 
     Console.WriteLine("Display information on all entities...")     
     Dim nMap as XmlNamedNodeMap = doc.DocumentType.Entities
     DisplayEntities(nMap)
  end sub
 
  public shared sub DisplayEntities(nMap as XmlNamedNodeMap)
     Dim i as integer   
     for i = 0 to nMap.Count - 1
        Dim ent as XmlEntity = CType(nMap.Item(i), XmlEntity)
        Console.Write("{0} ", ent.NodeType)
        Console.Write("{0} ", ent.Name)
        Console.Write("{0} ", ent.NotationName)
        Console.Write("{0} ", ent.PublicId)
        Console.Write("{0} ", ent.SystemId)
        Console.WriteLine()
     next
  end sub
end class

En el ejemplo se usa el archivo doment.xml como entrada.

<!DOCTYPE doc [

  <!ELEMENT doc ANY>
 
  <!NOTATION w SYSTEM "wine.exe">
  <!NOTATION v PUBLIC "vine.exe">

  <!NOTATION jpg PUBLIC "Jpeg picture format">
  <!NOTATION gif SYSTEM "Gif picture format">

  <!ENTITY wn PUBLIC "http://www.cohowinery.com" "coho.exe" NDATA w>
  <!ENTITY vn SYSTEM "http://www.cohovineyard.com" NDATA v>
  <!ENTITY mytxt "Text Sample">

  <!ATTLIST doc 
        src     ENTITY         #IMPLIED
        srcs    ENTITIES       #IMPLIED
        jpgPic  NOTATION (jpg) #IMPLIED
        gifPic  NOTATION (gif) #REQUIRED>
]>

<doc jpgPic="jpg" gifPic="gif" srcs="vn wn">
    something
</doc>

Se aplica a

Producto	Versiones
.NET	Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1

Consulte también

XmlDocumentType

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