Validating XML on XSD with the error line numbers

Question

Is there any way to validate an XML file on an XSD schema with the output of the error line numbers?

The XmlReader reader doesn\'t allow line numbers, it shows only

Answer 1

Try this working example. IXmlLineInfo gets you the line info. I am getting all the list of errors here, concatenating the Line number, unique id of that specific record, the element name where the error occurred and adding it to a list.

       //get the input file here - You can replace this to your local file
        var httpRequest = HttpContext.Current.Request;

        if (httpRequest.Files.Count > 0)
        {
            var postedFile = httpRequest.Files[0];

            //sete the xsd schema path                    
            string xsdPath = HttpContext.Current.Server.MapPath("~/XSD/MyFile.xsd");

            //set the XSD schema here
            var schema = new XmlSchemaSet();
            schema.Add("", xsdPath);
            var Message = "";

            //validate the xml schema here
            XDocument document = XDocument.Load(postedFile.InputStream, LoadOptions.PreserveWhitespace | LoadOptions.SetLineInfo | LoadOptions.SetBaseUri);
            //create a lists to add the error records
            List lstErrors = new List();
            document.Validate(schema, ValidationEventHandler);

            //validate all the errors
            document.Validate(schema, (sender, args) =>
             {
                 IXmlLineInfo item = sender as IXmlLineInfo;
                 if (item != null && item.HasLineInfo())
                 {
                     //capture all the details needed here seperated by colons
                     Message = item.LineNumber + ";" +
                     (((System.Xml.Linq.XObject)item).Parent.Element("id")).Value + ";" +
                     ((System.Xml.Linq.XElement)item).Name.LocalName + ";" +
                     args.Message + Environment.NewLine;
                     //add the error to a list
                     lstErrors.Add(Message);
                 }
             });
        }