ReadAttributeValue Method (System.Xml.XmlNodeReader)

Namespace

System.Xml

Assembly

System.Xml.ReaderWriter.dll

Syntax

public bool ReadAttributeValue();

Summary

Advances the XmlNodeReader to the next attribute value, if the reader is positioned on an attribute node. Returns true if the reader is positioned on an attribute value; otherwise, false.

Return Value

Type: System.Boolean

Returns true if the current node is an attribute value after the read operation; otherwise, false.

Remarks

When the reader is positioned on an attribute node, calling ReadAttributeValue moves the reader to the attribute's value text node (or to an entity reference if the value contains one). After processing the attribute value, you must call Read() to move to the next node.

Exceptions

Exception	Condition
`InvalidOperationException`	Called when the reader is not on an attribute node.

Example

using System;
using System.Xml;

class Program
{
    static void Main()
    {
        string xml = @"<book title='C# in Depth' author='Jon Skeet' />";
        XmlDocument doc = new XmlDocument();
        doc.LoadXml(xml);
        XmlNodeReader reader = new XmlNodeReader(doc);

        // Move to the  element
        reader.Read();  

        // Move to the first attribute (title)
        if (reader.MoveToFirstAttribute())
        {
            do
            {
                Console.WriteLine($"Attribute: {reader.Name}");
                // Read the attribute value
                if (reader.ReadAttributeValue())
                {
                    Console.WriteLine($"Value: {reader.Value}");
                }
            } while (reader.MoveToNextAttribute());
        }

        reader.Close();
    }
}

ReadAttributeValue Method