using System;
using System.Data;
using System.Xml;        // for XmlTextReader and XmlValidatingReader
using System.Xml.Schema; // for XmlSchemaCollection (which is used later)
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        private static bool isValid = true;
        private static string error = "";

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (xmlFileName.Text == "")
            {
                txtTulemus.Text = "Error ............. XML fail määramata!";
            }
            else
            {
                txtTulemus.Text = "";

                XmlReader xr = null;
                isValid = true;


                XmlReaderSettings settings = new XmlReaderSettings();
                settings.ValidationEventHandler +=new ValidationEventHandler(settings_ValidationEventHandler);
                settings.ProhibitDtd = false;
                settings.ValidationType = ValidationType.DTD;

                txtTulemus.Text += "Kontrollin vastavust DTD'le";
                xr = XmlReader.Create(xmlFileName.Text, settings);
                while (xr.Read()) { }
                // Check whether the document is valid or invalid.
                if (isValid)
                    txtTulemus.Text += " .............. OK" + Environment.NewLine;
                else
                {
                    txtTulemus.Text += Environment.NewLine + error;
                    error = "";
                    isValid = true;
                }

                settings.ValidationType = ValidationType.Schema;
                settings.ValidationFlags = XmlSchemaValidationFlags.ProcessSchemaLocation;
                xr = XmlReader.Create(xmlFileName.Text, settings);
                txtTulemus.Text += Environment.NewLine + "Kontrollin vastavust Schema'le";
                while (xr.Read()) { }
                // Check whether the document is valid or invalid.
                if (isValid)
                    txtTulemus.Text += " .............. OK" + Environment.NewLine;
                else
                {
                    txtTulemus.Text += Environment.NewLine + error;
                    error = "";
                    isValid = true;
                }
            }
        }

        void settings_ValidationEventHandler(object sender, ValidationEventArgs e)
        {
            isValid = false;
            error += "Error real " + e.Exception.LineNumber + ": " + e.Message + Environment.NewLine;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "XML Failid|*.xml";
            ofd.ShowDialog();
            if (ofd.FileName != "")
                xmlFileName.Text = ofd.FileName;
        }

    }
}