XmlElement.HasAttribute Method
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Determines whether the current node has the specified attribute.
| HasAttribute(String) |
Determines whether the current node has an attribute with the specified name. |
| HasAttribute(String, String) |
Determines whether the current node has an attribute with the specified local name and namespace URI. |
- Source:
- XmlElement.cs
- Source:
- XmlElement.cs
- Source:
- XmlElement.cs
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 -> boolPublic Overridable Function HasAttribute (name As String) As BooleanParameters
- name
- 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.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
Applies to
.NET 10 и други версии
| Продукт | Версии |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .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 |
| UWP | 10.0 |
- Source:
- XmlElement.cs
- Source:
- XmlElement.cs
- Source:
- XmlElement.cs
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);public virtual bool HasAttribute(string localName, string? namespaceURI);abstract member HasAttribute : string * string -> bool
override this.HasAttribute : string * string -> boolPublic Overridable Function HasAttribute (localName As String, namespaceURI As String) As BooleanParameters
- localName
- String
The local name of the attribute to find.
- namespaceURI
- String
The namespace URI of the attribute to find.
Returns
true if the current node has the specified attribute; otherwise, false.
Applies to
.NET 10 и други версии
| Продукт | Версии |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .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 |
| UWP | 10.0 |
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