ReadElementContentAsDouble Method
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XmlReader.ReadElementContentAsDouble Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

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();


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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