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I have a C# windows application,where in i am trying to compare the contents of the xml. The based on the difference in the xml documents i have further processing .Is there an inbuilt API which compares the xml?

Microsoft XML Diff & Patch tool has the API for this: http://msdn.microsoft.com/en-us/library/aa302294.aspx

DiffNow, XML comparison tool. CoreFiling XML Differences uses XML Pretty Printer and diff to display differences between XML files in an easy to read format. First File: Search for Convert Xml To Flat File at Helpful.Tips

Maybe no one uses XML anymore, but I needed to create some code tonight that performs a comparison between two xml snippets that doesn't care about element order unless the elements are repeated (a contained list). For a contained list, I do want to ensure the elements remain in their original order -- to ensure some form of unexpected sorting wasn't performed on its contents.

public static class XmlCompare
{
    /// <summary>
    /// Compares xml docs without regard to element order, unless the elements are a nested list
    /// </summary>
    /// <param name="primary">Any valid xml</param>
    /// <param name="secondary">Any valid xml</param>
    public static void Compare(string primary, string secondary)
    {
        Compare(XElement.Parse(primary), XElement.Parse(secondary));
    }

    /// <summary>
    /// Compares xml docs without regard to element order, unless the elements are a nested list
    /// </summary>
    /// <param name="primary">Any valid xml</param>
    /// <param name="secondary">Any valid xml</param>
    public static void Compare(XElement primary, XElement secondary)
    {
        // iterate attributes found in primary; compare values
        foreach (XAttribute primaryAttribute in primary.Attributes())
        {
            var secondaryAttribute = secondary.Attribute(primaryAttribute.Name.LocalName);
            if (secondaryAttribute == null)
            {
                throw new Exception($"Element '{primary.Name.LocalName}' attribute '{primaryAttribute.Name.LocalName}' missing from secondary xml");
            }
            else
            {
                var primaryValue = primaryAttribute.Value;
                var secondaryValue = secondaryAttribute.Value;
                if (primaryValue != secondaryValue)
                    throw new Exception($"Element '{primary.Name.LocalName}' attribute '{primaryAttribute.Name.LocalName}' has an unequal value.  Expected '{primaryValue}', actual '{secondaryValue}'");
            }
        }

        // iterate attributes found in secondary; just ensure all attributes found in the secondary exist in the primary
        foreach (var secondaryAttribute in secondary.Attributes())
        {
            if (primary.Attribute(secondaryAttribute.Name.LocalName) == null)
                throw new Exception($"Element '{secondary.Name.LocalName}' attribute '{secondaryAttribute.Name.LocalName}' missing from primary xml");
        }

        // iterate elements of primary; compare values
        for (var i = 0; i < primary.Elements().Count(); i++)
        {
            var primaryElement = primary.Elements().Skip(i).Take(1).Single();
            var elementOccursMultipleTimes = primary.Elements(primaryElement.Name.LocalName).Count() > 1;
            if (elementOccursMultipleTimes)
            {
                // this comparison fails if the sequence of element entries has been altered between the primary
                // and secondary document, such as sorting a list by name in one document, but sorting by date
                // in the other.
                var secondaryElement = secondary.Elements().Skip(i).Take(1).SingleOrDefault();
                if (secondaryElement == null)
                {
                    throw new Exception($"Element '{primaryElement.Name.LocalName}' missing from secondary xml");
                }

                Compare(primaryElement, secondaryElement);
            }
            else
            {
                var secondaryElement = secondary.Element(primaryElement.Name.LocalName);
                if (secondaryElement == null)
                    throw new Exception($"Element '{primaryElement.Name.LocalName}' missing from secondary xml");
                // to understand recursion, we must first understand recursion
                Compare(primaryElement, secondaryElement);
            }
        }

        // iterate elements of secondary; just ensure all the elements found in the secondary exist in the primary
        foreach (var secondaryElement in secondary.Elements())
        {
            if (primary.Element(secondaryElement.Name.LocalName) == null)
                throw new Exception($"Element '{secondaryElement.Name.LocalName}' missing from primary xml");
        }
    }

Hope this helps someone out there.

XML diff - Compare xml online, I had a similar problem and I eventually found: http://superuser.com/questions/​79920/how-can-i-diff-two-xml-files. That post suggests doing a  Compare Two XML files side by side & View Diff Copy the original XML data in the block on the left and modified data in the right block. Just click Check button to view side by side comparison. Online XML Diffing Tool Features

Not sure, but you could deserialise the 2 xml fragments and do an object over them.

XML comparison tool, File Difference tool will help you to compare text files, XML, JSON, Code, String, binary files. Upload files, Copy and Paste String/Text, Load Urls and Compare. It's easy to compare XML files with the XML diff tools in XMLSpy and DiffDog. Whether you need to compare two XML files or merge XML from three documents, these tools make it easy with XML-aware diff functionality.

How to compare XML files, Liquid XmlDiff is an XML specific differencing tool, enabling users to quickly compare two XML files. Advanced heuristic algorithms are used to examine the  XML Compare takes two well-formed XML files, analyses their structure and then compares these two files to identify the differences between them, outputting the results to a new XML or HTML file. The XML Compare algorithms work through the two XML files, analyzing their structure and matching up all the corresponding elements between them. XML Compare identifies all of the differences in your content according to your specific configuration.

Best Online File Comparison Tool to Compare files, String, Text , To compare XML file fragments, you need to copy and paste the fragments you want to compare into each side, without selecting a file. If a file is already selected,  Is there some tool that can sort the elements before comparing and will enable text comparison of the documents? Of course the sorting needs to be done recursively. Data example: File A: <xml> <A/> <B/> </xml> File B: <xml> <B/> <A/> </xml>

Compare XML Files, Compare Two XML files side by side & View Diff Copy the original XML data in the block on the left and modified data in the right block. Just click Check button to  XML Differences By CoreFiling Is An Online XML Comparison Tool Using Our Pretty Printer And Diff To Show Differences In XML Files In A Clear Format.

Comments
  • Thanks Jay ,i think this will be usefull.Saw the APIs
  • As i mentioned in my question,i wanted an API.
  • why are you so much gung-ho about API.I think the code which does your job is fine.
  • dear Srinivas Reddy Thatiparthy you are trying to create an argument here,what i am looking for is an API itself.If i were to write those implementations then this question would not have been in first place.