XmlNodeReader.GetAttribute Method
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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. |
- Source:
- XmlNodeReader.cs
- Source:
- XmlNodeReader.cs
- Source:
- XmlNodeReader.cs
Gets the value of the attribute with the specified index.
public:
override System::String ^ GetAttribute(int attributeIndex);
public override string GetAttribute (int attributeIndex);
override this.GetAttribute : int -> string
Public Overrides Function GetAttribute (attributeIndex As Integer) As String
Parameters
- attributeIndex
- Int32
The index of the attribute. The index is zero-based. (The first attribute has index 0.)
Returns
The value of the specified attribute.
Exceptions
The i
parameter is less than 0 or greater than or equal to AttributeCount.
Remarks
Ескерім
In the .NET Framework 2.0, the recommended practice is to create XmlReader instances using the XmlReaderSettings class and the Create method. This allows you to take full advantage of all the new features introduced in the .NET Framework. For more information, see the Remarks section in the XmlReader reference page.
This method does not move the reader.
Applies to
.NET 9 және басқа нұсқалар
Өнім | Нұсқалар |
---|---|
.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 |
- Source:
- XmlNodeReader.cs
- Source:
- XmlNodeReader.cs
- Source:
- XmlNodeReader.cs
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
Parameters
- name
- String
The qualified name of the attribute.
Returns
The value of the specified attribute. If the attribute is not found, null
is returned.
Examples
The following example gets the value of the ISBN attribute.
#using <System.Xml.dll>
using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
XmlNodeReader^ reader = nullptr;
try
{
//Create and load the XML document.
XmlDocument^ doc = gcnew XmlDocument;
doc->LoadXml( "<book genre='novel' ISBN='1-861003-78' publicationdate='1987'> "
"</book>" );
// Load the XmlNodeReader
reader = gcnew XmlNodeReader( doc );
//Read the ISBN attribute.
reader->MoveToContent();
String^ isbn = reader->GetAttribute( "ISBN" );
Console::WriteLine( "The ISBN value: {0}", isbn );
}
finally
{
if ( reader != nullptr )
reader->Close();
}
}
using System;
using System.IO;
using System.Xml;
public class Sample
{
public static void Main()
{
XmlNodeReader reader = null;
try
{
//Create and load the XML document.
XmlDocument doc = new XmlDocument();
doc.LoadXml("<book genre='novel' ISBN='1-861003-78' publicationdate='1987'> " +
"</book>");
// Load the XmlNodeReader
reader = new XmlNodeReader(doc);
//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 XmlNodeReader = Nothing
Try
'Create and load the XML document.
Dim doc As New XmlDocument()
doc.LoadXml("<book genre='novel' ISBN='1-861003-78' publicationdate='1987'> " & _
"</book>")
' Load the XmlNodeReader
reader = New XmlNodeReader(doc)
'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
Remarks
Ескерім
In the .NET Framework 2.0, the recommended practice is to create XmlReader instances using the XmlReaderSettings class and the Create method. This allows you to take full advantage of all the new features introduced in the .NET Framework. For more information, see the Remarks section in the XmlReader reference page.
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")
Applies to
.NET 9 және басқа нұсқалар
Өнім | Нұсқалар |
---|---|
.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 |
- Source:
- XmlNodeReader.cs
- Source:
- XmlNodeReader.cs
- Source:
- XmlNodeReader.cs
Gets the value of the attribute with the specified local name and namespace URI.
public:
override System::String ^ GetAttribute(System::String ^ name, System::String ^ namespaceURI);
public override string? GetAttribute (string name, string? namespaceURI);
public override string GetAttribute (string name, string namespaceURI);
override this.GetAttribute : string * string -> string
Public Overrides Function GetAttribute (name As String, namespaceURI As String) As String
Parameters
- name
- String
The local name of the attribute.
- namespaceURI
- String
The namespace URI of the attribute.
Returns
The value of the specified attribute. If the attribute is not found, null
is returned.
Remarks
Ескерім
In the .NET Framework 2.0, the recommended practice is to create XmlReader instances using the XmlReaderSettings class and the Create method. This allows you to take full advantage of all the new features introduced in the .NET Framework. For more information, see the Remarks section in the XmlReader reference page.
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.
Applies to
.NET 9 және басқа нұсқалар
Өнім | Нұсқалар |
---|---|
.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 |
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