XmlNodeReader.GetAttribute Method

Definition

Gets the value of an attribute.

Overloads

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.

GetAttribute(Int32)

Source:
XmlNodeReader.cs
Source:
XmlNodeReader.cs
Source:
XmlNodeReader.cs

Gets the value of the attribute with the specified index.

public override string GetAttribute (int attributeIndex);

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

GetAttribute(String)

Source:
XmlNodeReader.cs
Source:
XmlNodeReader.cs
Source:
XmlNodeReader.cs

Gets the value of the attribute with the specified name.

public override string? GetAttribute (string name);
public override string GetAttribute (string name);

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;
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

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

GetAttribute(String, String)

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 string? GetAttribute (string name, string? namespaceURI);
public override string GetAttribute (string name, string namespaceURI);

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