XmlElement.HasAttribute XmlElement.HasAttribute XmlElement.HasAttribute XmlElement.HasAttribute Method

Definition

Determines whether the current node has the specified attribute.

Overloads

HasAttribute(String) HasAttribute(String) HasAttribute(String) HasAttribute(String)

Determines whether the current node has an attribute with the specified name.

HasAttribute(String, String) HasAttribute(String, String) HasAttribute(String, String) HasAttribute(String, String)

Determines whether the current node has an attribute with the specified local name and namespace URI.

HasAttribute(String) HasAttribute(String) HasAttribute(String) HasAttribute(String)

Determines whether the current node has an attribute with the specified name.

public:
 virtual bool HasAttribute(System::String ^ name);
public virtual bool HasAttribute (string name);
abstract member HasAttribute : string -> bool
override this.HasAttribute : string -> bool
Public Overridable Function HasAttribute (name As String) As Boolean

Parameters

name
String String String String

The name of the attribute to find. This is a qualified name. It is matched against the Name property of the matching node.

Returns

true if the current node has the specified attribute; otherwise, false.

Examples

The following example checks to see if the element has the specified attribute.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->LoadXml( "<book genre='novel' ISBN='1-861001-57-5'><title>Pride And Prejudice</title></book>" );
   XmlElement^ root = doc->DocumentElement;
   
   // Check to see if the element has a genre attribute.
   if ( root->HasAttribute( "genre" ) )
   {
      String^ genre = root->GetAttribute( "genre" );
      Console::WriteLine( genre );
   }
}

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

public class Sample
{
  public static void Main()
  {

    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<book genre='novel' ISBN='1-861001-57-5'>" +
                "<title>Pride And Prejudice</title>" +
                "</book>");

    XmlElement root = doc.DocumentElement;

    // Check to see if the element has a genre attribute.
    if (root.HasAttribute("genre")){
      String genre = root.GetAttribute("genre");
      Console.WriteLine(genre);
   }

  }
}
Imports System
Imports System.IO
Imports System.Xml

public class Sample

  public shared sub Main()

    Dim doc as XmlDocument = new XmlDocument()
    doc.LoadXml("<book genre='novel' ISBN='1-861001-57-5'>" & _
                "<title>Pride And Prejudice</title>" & _
                "</book>")      

    Dim root as XmlElement = doc.DocumentElement

    ' Check to see if the element has a genre attribute.
    if (root.HasAttribute("genre"))
     Dim genre as String = root.GetAttribute("genre")
     Console.WriteLine(genre)
    end if
       
    Console.WriteLine("Display the modified XML...")
    Console.WriteLine(doc.InnerXml)

  end sub
end class

HasAttribute(String, String) HasAttribute(String, String) HasAttribute(String, String) HasAttribute(String, String)

Determines whether the current node has an attribute with the specified local name and namespace URI.

public:
 virtual bool HasAttribute(System::String ^ localName, System::String ^ namespaceURI);
public virtual bool HasAttribute (string localName, string namespaceURI);
abstract member HasAttribute : string * string -> bool
override this.HasAttribute : string * string -> bool
Public Overridable Function HasAttribute (localName As String, namespaceURI As String) As Boolean

Parameters

localName
String String String String

The local name of the attribute to find.

namespaceURI
String String String String

The namespace URI of the attribute to find.

Returns

true if the current node has the specified attribute; otherwise, false.

Applies to