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XmlReader.ReadElementContentAsDouble Method

Reads the current element and returns the contents as a double-precision floating-point number.

Namespace:  System.Xml
Assembly:  System.Xml (in System.Xml.dll)

public virtual double ReadElementContentAsDouble()

Return Value

Type: System.Double
The element content as a double-precision floating-point number.

ExceptionCondition
InvalidOperationException

The XmlReader is not positioned on an element.

XmlException

The current element contains child elements.

-or-

The element content cannot be converted to a double-precision floating-point number.

ArgumentNullException

The method is called with null arguments.

This method reads the start tag, the contents of the element, and moves the reader past the end element tag. It expands entities and ignores processing instructions and comments. The element can only contain simple content. That is, it cannot have child elements.




StringBuilder output = new StringBuilder();

String xmlString =
    @"<root>
    <stringValue>
    <!--comment-->
    <?some pi?>
        text value of the element.
    </stringValue>
    <longValue>270000000000001</longValue>
    <number>0</number>
    <double>2E10</double>
    <date>2003-01-08T15:00:00-00:00</date>
</root>";

using (XmlReader reader = XmlReader.Create(new StringReader(xmlString)))
{
    reader.ReadToFollowing("double");
    Double number = reader.ReadElementContentAsDouble();
    // Do some processing with the number object.	

    output.AppendLine(number.ToString());
}

OutputTextBlock.Text = output.ToString();


Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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