i have an xml file of calendar. Below is the details of it.. 

<calender>
  <appointment>
    <date>Friday, May 09, 2008</date>
    <time>12:58:30 PM</time>
    <title>Conference Call</title>
    <description>asccfasfas</description>
  </appointment>
  <appointment>
    <date>Wednesday, May 21, 2008</date>
    <time>6:46:04 PM</time>
    <title>Conference Call</title>
    <description>asdadadadasdasdas</description>
  </appointment>
  <appointment>
    <date>Wednesday, May 21, 2008</date>
    <time>10:46:12 PM</time>
    <title>Dinner</title>
    <description>asdasdadada</description>
  </appointment>
</calender>

MessageBox.Show(date);
			textBox1.Text=date;

            string mainPath = Path.Combine(instance.MainPath, instance.User);

           string FILE_NAME = Path.Combine(mainPath, "calender.xml");
            // check if file exists

             string[] filenames1 = Directory.GetFiles(mainPath);
                bool flagg1 = false;
                foreach (string nm in filenames1)
                    if (nm.Contains("calender.xml"))
                        flagg1 = true;
                if (flagg1 == true)  //outbox.xml exists
                {
                    XPathDocument doc;
                    XPathNavigator nav;
                    XPathExpression expr;
                    XPathNodeIterator iterator;
                    doc = new XPathDocument(FILE_NAME);
                    nav = doc.CreateNavigator();
                    string str = textBox1.Text;
                    if (str == "") return;
                    string oldTitle = "";
                    oldTitle = str;
                    expr = nav.Compile("/calender/appointment[date='" + str + "']");
                    iterator = nav.Select(expr);

                    if (iterator.MoveNext())
                    {

                        XPathNavigator nav2 = iterator.Current.Clone();



                        nav2.MoveToFirstChild();
                        textBox2.Text = nav2.Value;
                        nav2.MoveToNext();
                        textBox3.Text = nav2.Value;
                        nav2.MoveToNext();
                        textBox4.Text = nav2.Value;
                        nav2.MoveToNext();
                        richTextBox1.Text = nav2.Value;
                    }


                    string value1 = this.richTextBox1.Text;
                    instance.Des = richTextBox1.Text;


                    description des = new description();
                                       
                    MainForm mf = (MainForm)this.FindForm();
                    mf.splitContainer2.Panel2.Controls.Add(des);
                    des.Dock = DockStyle.Fill;
                    des.BringToFront();

                    ///
                    XmlDocument docu = new XmlDocument();

                    string filename = Path.Combine(mainPath ,"datagrid.xml");
                    docu.Load(filename);


                    DataSet dsAuthors = new DataSet("datagrid");

                    //docu.Load(filename);
                    XmlNode node = docu.DocumentElement;

                    XmlNode Appoint = docu.DocumentElement;
                    XmlElement Appointment = docu.CreateElement("appointment");

                    XmlElement Date = docu.CreateElement("date");
                    Date.InnerText = textBox2.Text;
                    XmlElement Time = docu.CreateElement("time");
                    Time.InnerText = textBox3.Text;
                    XmlElement Title = docu.CreateElement("title");
                    Title.InnerText = textBox4.Text;
                    node.AppendChild(Date);
                    node.AppendChild(Time);
                    node.AppendChild(Title);
                    docu.Save(filename);






                    XPathDocument docm = new XPathDocument(filename);
                    XPathNavigator navigator = docm.CreateNavigator();
                    XPathNodeIterator node1 = navigator.Select("/datagrid/date");
                    XPathNodeIterator node2 = navigator.Select("/datagrid/time");
                    XPathNodeIterator node3 = navigator.Select("/datagrid/title");


                    //
                    // TODO: Add constructor code after the InitializeComponent() call.
                    //

                    string s, p, q;

                    while (node1.MoveNext() & node2.MoveNext() & node3.MoveNext())
                    {

                        DataGridViewRowCollection rw = dataGridView1.Rows;

                        s = node1.Current.InnerXml;
                        p = node2.Current.InnerXml;
                        q = node3.Current.InnerXml;
                        //navigator.MoveToRoot();        
                        rw.Add(s, p, q);

                    }



                    //clear xml file
                    node.RemoveAll();
                    docu.Save(filename);

                    //dataGridView1;

 How do i select both the appoinments of the same date?

waitn for an early reply in c#.Net nd thanks in advance 

 Something like this:

  int i = 0;
     XPathDocument xpathDoc;
     XPathNavigator xmlNav;
    XPathNodeIterator xmlNI;
     try {
         xpathDoc = new XPathDocument("c:/temp/mail.xml");
        xmlNav = xpathDoc.CreateNavigator();
         xmlNI = xmlNav.Select("/calender/appointment/date[contains(., 'May 21, 2008')]");
         while ((xmlNI.MoveNext())) {
             Interaction.MsgBox(xmlNI.Current.Value);
             i = i + 1;
        }
         this.TextBox1.Text = "total hits: " + i.ToString;
     }
     catch (Exception ex) {
         Interaction.MsgBox(Err.Description);
    }