XObject.IXmlLineInfo.HasLineInfo Method
Gets a value indicating whether or not this XObject has line information.
Assembly: System.Xml.Linq (in System.Xml.Linq.dll)
You can call this method to determine whether the XObject contains valid line information.
This method is an explicit interface member implementation of a method in the IXmlLineInfo interface, so in order to call this method, it is necessary to cast to IXmlLineInfo.
This example loads a small XML tree from a file, setting the options to set base URI and retain line information. It then adds another element that does not have line information. It then prints the line information for each element in the tree.
string markup = @"<Root> <Child1 /> <Child2 /> <Child4 /> </Root>"; File.WriteAllText("Test.xml", markup); XElement po = XElement.Load("Test.xml", LoadOptions.SetBaseUri | LoadOptions.SetLineInfo); // add a node to the tree. // the newly added node will not have line information. po.Element("Child2").AddAfterSelf(new XElement("Child3")); string[] splitUri = po.BaseUri.Split('/'); Console.WriteLine("BaseUri: {0}", splitUri[splitUri.Length - 1]); Console.WriteLine(); Console.WriteLine("{0}{1}{2}", "Element Name".PadRight(20), "Line".PadRight(5), "Position"); Console.WriteLine("{0}{1}{2}", "------------".PadRight(20), "----".PadRight(5), "--------"); foreach (XElement e in po.DescendantsAndSelf()) Console.WriteLine("{0}{1}{2}", ("".PadRight(e.Ancestors().Count() * 2) + e.Name).PadRight(20), ((IXmlLineInfo)e).HasLineInfo() ? ((IXmlLineInfo)e).LineNumber.ToString().PadRight(5) : "", ((IXmlLineInfo)e).HasLineInfo() ? ((IXmlLineInfo)e).LinePosition.ToString() : "No Line Information");
This example produces the following output:
BaseUri: Test.xml Element Name Line Position ------------ ---- -------- Root 1 2 Child1 2 6 Child2 3 6 Child3 No Line Information Child4 4 6
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.
