XmlReader.ReadElementContentAs Method (Type, IXmlNamespaceResolver)
Reads the element content as the requested type.
Assembly: System.Xml (in System.Xml.dll)
public virtual Object ReadElementContentAs( Type returnType, IXmlNamespaceResolver namespaceResolver )
Parameters
- returnType
- Type: System.Type
The type of the value to be returned.
Note With the release of the .NET Framework 3.5, the value of the returnType parameter can now be the DateTimeOffset type.
- namespaceResolver
- Type: System.Xml.IXmlNamespaceResolver
An IXmlNamespaceResolver object that is used to resolve any namespace prefixes related to type conversion.
| Exception | Condition |
|---|---|
| InvalidOperationException | The XmlReader is not positioned on an element. |
| XmlException | The current element contains child elements. -or- The element content cannot be converted to the requested type. |
| ArgumentNullException | The method is called with null arguments. |
| OverflowException | Read Decimal.MaxValue. |
| InvalidOperationException | An XmlReader method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message “An asynchronous operation is already in progress.” |
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.
For more information, see Reading Typed Data and the W3C XML Schema Part 2: Datatypes recommendation.
For the asynchronous version of this method, see ReadElementContentAsAsync.
The following example uses the ReadElementContentAs method to read the content of the date node.
using (XmlReader reader = XmlReader.Create("dataFile.xml")) { reader.ReadToFollowing("date"); DateTime date = (DateTime) reader.ReadElementContentAs(typeof(System.DateTime), null); // If the current culture is "en-US", // this writes "Wednesday, January 8, 2003". Console.WriteLine(date.ToLongDateString()); }
The example uses the dataFile.xml file as input.
<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>
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
