Shipwreck.OpenGraph

Open Graph Protocol Reader for .NET

Installation

Use NuGet package Shipwreck.OpenGraph.

Load Graph

Load from well-formed XHTML

using Shipwreck.OpenGraph;

Graph graph = Graph.FromXml(xml);

Load from XmlReader, XmlDocument, XDocument or HtmlAgilityPack.HtmlDocument

Graph.FromXmlReader(xmlReader);
Graph.FromXmlDocument(xmlDocument);
Graph.FromXPathNavigator(xDocument.CreateNavigator());
Graph.FromXPathNavigable(htmlDocument);

Load from TextReader or Stream

TextReader or Stream must be well-formed.

Graph.FromTextReader(textReader);
Graph.FromStream(stream);

Accessing Raw Properties.

The Graph and its descendants inherits GraphObject class. You can access GraphObject's properties via GraphObject.LocalProperties and GraphObject.Children.

PropertyPath

All properties in GraphObject are mapped by PropertyPath type which contains namespace URI and path.

Values of PropertyEntry.Property in LocalProperties are mostly relative. So it should be combined with GraphObject.Path.

var entry = obj.LocalProperties[i];
var absolutePath = entry.Property.IsRelative ? ob.Path + entry.Property.Path : entry.Property;

Or you can use GraphObject.GetLocalProperties() to enumerate properties with absolute path.

TypeObject

The Graph has TypeObject property that stores og:type depended properties. As its properties are separated from Graph, Graph.LocalProperties and Children does not include TypeObject items.

Accessing Typed Properties.

You can access properties via various CLR properties.

(TBD)

All array properties contains both singular and collection properties. When multiple raw values exist, getting the singular will returns the first value. And setting it will clear existing entries.

TypeObject

Graph has several properties that can access TypeObject as derived types.

Write Open Graph

(TBD)

• Graph.GetPrefixAttribute()
• Graph.WriteTo