Ask Learn
Preview
Please sign in to use this experience.
Sign inThis browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets the value of an attribute.
GetAttribute(Int32) |
Gets the value of the attribute with the specified index. |
GetAttribute(String) |
Gets the value of the attribute with the specified name. |
GetAttribute(String, String) |
Gets the value of the attribute with the specified local name and namespace URI. |
Note
We recommend that you create XmlReader instances by using the XmlReader.Create method to take advantage of new functionality.
Gets the value of the attribute with the specified index.
public:
override System::String ^ GetAttribute(int i);
public override string GetAttribute(int i);
override this.GetAttribute : int -> string
Public Overrides Function GetAttribute (i As Integer) As String
The index of the attribute. The index is zero-based. (The first attribute has index 0.)
The value of the specified attribute.
The i
parameter is less than 0 or greater than or equal to AttributeCount.
Note
We recommend that you create XmlReader instances by using the XmlReader.Create method to take advantage of new functionality.
This method does not move the reader.
Product | Versions |
---|---|
.NET | 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 |
Gets the value of the attribute with the specified name.
public:
override System::String ^ GetAttribute(System::String ^ name);
public override string? GetAttribute(string name);
public override string GetAttribute(string name);
override this.GetAttribute : string -> string
Public Overrides Function GetAttribute (name As String) As String
The qualified name of the attribute.
The value of the specified attribute. If the attribute is not found, null
is returned.
The following example gets the value of the ISBN attribute.
using System;
using System.IO;
using System.Xml;
public class Sample
{
public static void Main()
{
XmlTextReader reader = null;
try
{
//Load the reader with the XML file.
reader = new XmlTextReader("attrs.xml");
//Read the ISBN attribute.
reader.MoveToContent();
string isbn = reader.GetAttribute("ISBN");
Console.WriteLine("The ISBN value: " + isbn);
}
finally
{
if (reader != null)
reader.Close();
}
}
} // End class
Imports System.IO
Imports System.Xml
Public Class Sample
Public Shared Sub Main()
Dim reader As XmlTextReader = Nothing
Try
'Load the reader with the XML file.
reader = New XmlTextReader("attrs.xml")
'Read the ISBN attribute.
reader.MoveToContent()
Dim isbn As String = reader.GetAttribute("ISBN")
Console.WriteLine("The ISBN value: " & isbn)
Finally
If Not (reader Is Nothing) Then
reader.Close()
End If
End Try
End Sub
End Class
The example uses the file, attrs.xml
, as input.
<book genre='novel' ISBN='1-861003-78' pubdate='1987'>
</book>
Note
We recommend that you create XmlReader instances by using the XmlReader.Create method to take advantage of new functionality.
This method does not move the reader.
If the reader is positioned on a DocumentType
node, this method can be used to get the PUBLIC and SYSTEM literals, for example, reader.GetAttribute("PUBLIC")
Product | Versions |
---|---|
.NET | 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 |
Gets the value of the attribute with the specified local name and namespace URI.
public:
override System::String ^ GetAttribute(System::String ^ localName, System::String ^ namespaceURI);
public override string? GetAttribute(string localName, string? namespaceURI);
public override string GetAttribute(string localName, string namespaceURI);
override this.GetAttribute : string * string -> string
Public Overrides Function GetAttribute (localName As String, namespaceURI As String) As String
The local name of the attribute.
The namespace URI of the attribute.
The value of the specified attribute. If the attribute is not found, null
is returned. This method does not move the reader.
Note
We recommend that you create XmlReader instances by using the XmlReader.Create method to take advantage of new functionality.
The following XML contains an attribute in a specific namespace:
<test xmlns:dt="urn:datatypes" dt:type="int"/>
You can lookup the dt:type
attribute using one argument (prefix and local name) or two arguments (local name and namespace URI):
String dt = reader.GetAttribute("dt:type");
String dt2 = reader.GetAttribute("type","urn:datatypes");
To lookup the xmlns:dt
attribute, use one of the following arguments:
String dt3 = reader.GetAttribute("xmlns:dt");
String dt4 = reader.GetAttribute("dt",http://www.w3.org/2000/xmlns/);
You can also get this information using the Prefix property.
Product | Versions |
---|---|
.NET | 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 |
.NET feedback
.NET is an open source project. Select a link to provide feedback:
Please sign in to use this experience.
Sign in