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POHow to validate an XML with an XSD using LINQ
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copied!<p>EDIT2: the problem seems to be my xsd. it validates pretty much every XML. i can't post the XSD on here though. why would every XML be valid for an XSD?</p> <p>EDIT: found a similar excample in the answer on <a href="https://stackoverflow.com/questions/6522319/how-to-validate-xml-against-xsd-in-c-windows-forms">here</a>. Same issue, it finds no errors no matter what xml and xsd i compare. even if i use a random diffrent xsd it keeps saying it is all fine.</p> <p>I found a lot of examples doing it without LINQ, but how would you do it with LINQ?</p> <p>I used Google to find an example but it seems to skip the validation most of the time validating every XML. (it once went into it, rejecting the file but I haven't been able to reproduce it.)</p> <p>Are there better ways of doing it or is there a reason why it would skip over the validation?</p> <pre><code>public String ValidateXml2(String xml, String xsd) { String Message = String.Empty; var ms = new MemoryStream(Encoding.Default.GetBytes(xml)); // Create the XML document to validate against. XDocument xDoc = XDocument.Load(ms, LoadOptions.PreserveWhitespace); XmlSchemaSet schema = new XmlSchemaSet(); bool isError = new bool(); // Defaults to false. int countError = 1; // Counts the number of errors have generated. Stream xsdMemoryStream = new MemoryStream(Encoding.Default.GetBytes(xsd)); // Add the schema file you want to validate against. schema.Add(XmlSchema.Read (xsdMemoryStream, new ValidationEventHandler((sender, args) => { Message = args.Exception.Message; }) )); // Call validate and use a LAMBDA Expression as extended method! // Don't you love .NET 3.5 and LINQ... xDoc.Validate(schema, (sender, e) => { switch (e.Severity) { case XmlSeverityType.Error: Console.WriteLine("Error {0} generated.", countError); break; case XmlSeverityType.Warning: Console.WriteLine("Warning {0} generated.", countError); break; } Console.WriteLine(sender.GetType().Name); Console.WriteLine("\r\n{0}\r\nType {1}\r\n", e.Message, e.Severity.ToString()); Console.WriteLine("-".PadRight(110, '-')); countError++; isError = true; // If error fires, flag it to handle once call is complete. } , true); // True tells the validate call to populate the post-schema-validation // which you will need later, if you want to dive a littel deeper... if (isError == true) // Error has been flagged. Lets see the errors generated. Console.WriteLine("You my friend have {0} error(s), now what?", countError); else Console.WriteLine("You rock! No errors..."); Console.Write("\r\n\r\nPress Enter to End"); Console.ReadKey(); return Message; } </code></pre> <p><a href="http://nitefrog.com/2008/06/xsd-schema-validation-using-linq-and-c/" rel="nofollow noreferrer">Credits and original example</a></p>

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