DataSet Xml Schema validation does not work

Hi friend,

Try below code for verifying the xml against xsd:

using System;
using System.Xml;
using System.Xml.Schema;


namespace ConsoleApplication3
{
    ///

    /// Summary description for Class1.
    ///

    class Class1
    {
        ///

        /// The main entry point for the application.
        ///

        System.Boolean m_success;

        [STAThread]
        static void Main(string[] args)
        {
            //
            // TODO: Add code to start application here.
            //
            XmlValidatingReader reader = null;
            XmlSchemaCollection myschema = new XmlSchemaCollection();
            ValidationEventHandler eventHandler = new ValidationEventHandler(Class1.ShowCompileErrors);


            try
            {
                //Create the XML fragment to be parsed.
                String xmlFrag = "" +
                    "Herman" +
                    "Melville" +
                    "";

                //Create the XmlParserContext.
                XmlParserContext context = new XmlParserContext(null, null, "", XmlSpace.None);

                //Implement the reader.
                reader = new XmlValidatingReader(xmlFrag, XmlNodeType.Element, context);
                //Add the schema.
                myschema.Add("urn:bookstore-schema", "c:\\Books.xsd");

                //Set the schema type and add the schema to the reader.
                reader.ValidationType = ValidationType.Schema;
                reader.Schemas.Add(myschema);

                while (reader.Read())
                {
                }

                Console.WriteLine("Completed validating xmlfragment");
            }
            catch (XmlException XmlExp)
            {
                Console.WriteLine(XmlExp.Message);
            }
            catch (XmlSchemaException XmlSchExp)
            {
                Console.WriteLine(XmlSchExp.Message);
            }
            catch (Exception GenExp)
            {
                Console.WriteLine(GenExp.Message);
            }
            finally
            {
                Console.Read();
            }

        }
        public static void ShowCompileErrors(object sender, ValidationEventArgs args)
        {
            Console.WriteLine("Validation Error: {0}", args.Message);
        }

    }
}



Please mark as answer if it helps.

Salil , compulsary you should validate schema with the help of XSD. If its mismatched we can't stored data into the dataset and its always shows null only. Just update AddressBook.xsd schema as i mentioned below.

 

xml version="1.0" encoding="utf-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="AddressBook">
<xs:complexType>
<xs:sequence>
<xs:element maxOccurs="unbounded" name="AddressBookEntry">
<xs:complexType>
<xs:sequence>
<xs:element name="Name">
<xs:complexType>
<xs:sequence>
<xs:element name="First" type="xs:string" />
<xs:element minOccurs="0" name="Middle" type="xs:string" />
<xs:element name="Last" type="xs:string" />
xs:sequence>
xs:complexType>
xs:element>
<xs:element minOccurs="0" name="Telephone">
<xs:complexType>
<xs:sequence>
<xs:element name="CountryCode" type="xs:unsignedByte" />
<xs:element name="AreaCode" type="xs:unsignedShort" />
<xs:element name="Exchange" type="xs:unsignedShort" />
<xs:element name="Number" type="xs:unsignedShort" />
xs:sequence>
<xs:attribute name="Type" type="xs:string" use="required" />
xs:complexType>
xs:element>
<xs:element name="EmailAddress" type="xs:string" />
xs:sequence>
xs:complexType>
xs:element>
xs:sequence>
xs:complexType>
xs:element>
xs:schema> 
  
Please mark as answer if its helps you.