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XDocument.Load Method (XmlReader, LoadOptions)

Loads an XElement from an XmlReader, optionally setting the base URI, and retaining line information.

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

public static XDocument Load(
	XmlReader reader,
	LoadOptions options


Type: System.Xml.XmlReader
A XmlReader that will be read for the content of the XDocument.
Type: System.Xml.Linq.LoadOptions
A LoadOptions that specifies whether to load base URI and line information.

Return Value

Type: System.Xml.Linq.XDocument
An XDocument that contains the XML that was read from the specified XmlReader.

By creating an XmlNodeReader from a DOM document, and then using the XmlNodeReader to create an XElement, this method can be used to create a copy of a DOM document in a LINQ to XML tree.

Use Parse to create an XDocument from a string that contains XML.

Setting PreserveWhitespace is not valid when loading from a XmlReader. The XmlReader will be configured to either read whitespace or not. The LINQ to XML tree will be populated with the whitespace nodes that the reader surfaces. This will be the behavior regardless of whether PreserveWhitespace is set or not.

The XmlReader may have a valid base URI or not. If you set SetBaseUri, the base URI will be set in the XML tree from the base URI that is reported by the XmlReader.

The XmlReader may have a valid line information or not. If you set SetLineInfo, the line information will be set in the XML tree from the line information that is reported by the XmlReader.

There is a performance penalty if you set the SetLineInfo flag.

The line information is accurate immediately after loading the XML document. If you modify the XML tree after loading the document, the line information may become meaningless.

LINQ to XML's loading functionality is built upon XmlReader. Therefore, you might catch any exceptions that are thrown by the XmlReader.Create overload methods and the XmlReader methods that read and parse the document.

The following example loads the line information that it loads from the XmlReader. It then prints the line information.

string markup =

// Create a reader and move to the content.
using (XmlReader nodeReader = XmlReader.Create(new StringReader(markup)))
    // the reader must be in the Interactive state in order to
    // Create a LINQ to XML tree from it.

    XDocument xRoot = XDocument.Load(nodeReader, LoadOptions.SetLineInfo);
        "Element Name".PadRight(20),
    foreach (XElement e in xRoot.Elements("Root").DescendantsAndSelf())
            ("".PadRight(e.Ancestors().Count() * 2) + e.Name).PadRight(20),

This example produces the following output:

Element Name        Line Position
------------        ---- --------
Root                1    2
  Child             2    6
    GrandChild      3    10

.NET Framework

Supported in: 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.