XmlConvert.VerifyName(String) Método

Definição

Namespace:

System.Xml

Assembly:

System.Xml.ReaderWriter.dll

Assembly:

System.Xml.dll

Assembly:

netstandard.dll

Verifica se o nome é um nome válido de acordo com a recomendação de W3C Extended Markup Language.

public:
 static System::String ^ VerifyName(System::String ^ name);

public static string VerifyName (string name);

static member VerifyName : string -> string

Public Shared Function VerifyName (name As String) As String

Parâmetros

name

String

O nome para verificar.

Retornos

String

O nome, se ele for um nome XML válido.

Exceções

XmlException

name não é um nome XML válido.

ArgumentNullException

name é null ou String.Empty.

Exemplos

O exemplo a seguir usa o VerifyName método para escrever um nome de elemento.

#using <System.dll>
#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
int main()
{
   XmlTextWriter^ writer = gcnew XmlTextWriter( "out.xml", nullptr );
   String^ tag = "item name";
   try
   {
      
      // Write the root element.
      writer->WriteStartElement( "root" );
      writer->WriteStartElement( XmlConvert::VerifyName( tag ) );
   }
   catch ( XmlException^ e ) 
   {
      Console::WriteLine( e->Message );
      Console::WriteLine( "Convert to a valid name..." );
      writer->WriteStartElement( XmlConvert::EncodeName( tag ) );
   }

   writer->WriteString( "hammer" );
   writer->WriteEndElement();
   
   // Write the end tag for the root element.
   writer->WriteEndElement();
   writer->Close();
}

using System;
using System.Xml;

public class Sample{

  public static void Main(){
     XmlTextWriter writer = new XmlTextWriter ("out.xml", null);
     string tag = "item name";

  try{
    
     // Write the root element.
     writer.WriteStartElement("root");

     writer.WriteStartElement(XmlConvert.VerifyName(tag));
     }
     catch (XmlException e){
        Console.WriteLine(e.Message);
        Console.WriteLine("Convert to a valid name...");
        writer.WriteStartElement(XmlConvert.EncodeName(tag));
     }

     writer.WriteString("hammer");
     writer.WriteEndElement();

     // Write the end tag for the root element.
     writer.WriteEndElement();

     writer.Close();
  }
}

Imports System.Xml

Public Class Sample

    Public Shared Sub Main()
        Dim writer As New XmlTextWriter("out.xml", Nothing)
        Dim tag As String = "item name"

        Try
    
            ' Write the root element.
            writer.WriteStartElement("root")

            writer.WriteStartElement(XmlConvert.VerifyName(tag))

        Catch e As XmlException
            Console.WriteLine(e.Message)
            Console.WriteLine("Convert to a valid name...")
            writer.WriteStartElement(XmlConvert.EncodeName(tag))
        End Try

        writer.WriteString("hammer")
        writer.WriteEndElement()

        ' Write the end tag for the root element.
        writer.WriteEndElement()
 
        writer.Close()
  
    End Sub
End Class

Comentários

Esse método pode ser usado com a XmlWriter classe da maneira a seguir.

try{  
  writer.WriteStartElement(XmlConvert.VerifyName("item"),"bar");  
}  
catch(Exception e)  
{  
  Console.WriteLine("error");  
}  

Confira também

• VerifyNCName(String)