Outlook Type Address Book in C#, LINQ, XML with Menu and ToolBar

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using System.Xml;
using System.Linq;
using System.Xml.Linq;

namespace AddressBook
{
    public partial class AddressBookForm : Form
    {
        #region Fields
        private System.Windows.Forms.MainMenu mainMenu1;
        private System.Windows.Forms.MenuItem mnuFile;
        private System.Windows.Forms.MenuItem mnuView;
        private System.Windows.Forms.MenuItem mnuFileExit;
        private System.Windows.Forms.MenuItem mnuFileAdd;
        private System.Windows.Forms.MenuItem mnuFileProperties;
        private System.Windows.Forms.MenuItem mnuViewToolbar;
        #endregion
        public AddressBookForm()
        {
            InitializeComponent();
            this.mainMenu1 = new System.Windows.Forms.MainMenu();
            this.mnuFile = new System.Windows.Forms.MenuItem();
            this.mnuView = new System.Windows.Forms.MenuItem();
            this.mnuFileExit = new System.Windows.Forms.MenuItem();
            this.mnuFileAdd = new System.Windows.Forms.MenuItem();
            this.mnuFileProperties = new System.Windows.Forms.MenuItem();
            this.mnuViewToolbar = new System.Windows.Forms.MenuItem();

            // 
            // mainMenu1
            // 
            this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {this.mnuView, this.mnuFile});
            // 
            // mnuFile
            // 
            this.mnuFile.Index = 0;
            this.mnuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {this.mnuFileAdd,this.mnuFileProperties, this.mnuFileExit });
            this.mnuFile.Text = "&File";
            // 
            this.mnuFileAdd.Index = 0;
            this.mnuFileAdd.Text = "A&dd New";
            this.mnuFileAdd.Click += new System.EventHandler(this.btnAdd_Click);

            this.mnuFileProperties.Index = 1;
            this.mnuFileProperties.Text = "S&how properties";
            this.mnuFileProperties.Click += new System.EventHandler(this._dgAddressBook_DoubleClick);
            // mnuFileExit
            // 
            this.mnuFileExit.Index = 2;
            this.mnuFileExit.Text = "E&xit";
            this.mnuFileExit.Click += new EventHandler(this.btnExit_Click);

             this.mnuView.Index = 1;
             this.mnuView.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] { this.mnuViewToolbar});
             this.mnuView.Text = "&View";

             this.mnuViewToolbar.Index = 0;
             this.mnuViewToolbar.Text = "V&iew ToolBar";
             this.mnuViewToolbar.Checked = true;
             this.mnuViewToolbar.Click += new System.EventHandler(this.ViewToolbar_Click);
             this.Menu = this.mainMenu1;
             ToolTip toolTip1 = new ToolTip();
             toolTip1.SetToolTip(this.btnAdd, "Add New");
             toolTip1.SetToolTip(this.btnDelete, "Delete");
             toolTip1.SetToolTip(this.txtSearch, "Type Name to Search");

        }


        private void AddressBookForm_Load(object sender, EventArgs e)
        {            
            XMLParse.getAllAddress();
            populateData(XMLParse.ContactList);
        }

        private void populateData(List<Contacts> ContactList)
        {            

            _dgAddressBook.BeginUpdate();
            _dgAddressBook.Items.Clear();

            foreach (Contacts cts in ContactList)
            {
                ListViewItem item = _dgAddressBook.Items.Add(cts.FName);
                item.SubItems.Add(cts.LName);
                item.SubItems.Add(cts.Phone1);
                item.SubItems.Add(cts.Phone2);
                item.SubItems.Add(cts.Address1);
                item.SubItems.Add(cts.Address2);
                item.SubItems.Add(cts.City);
                item.SubItems.Add(cts.State);
                item.SubItems.Add(cts.Zip);
                item.SubItems.Add(cts.Country);
                item.SubItems.Add(cts.Email);
            }

            _dgAddressBook.EndUpdate();
                                               
        }

        private void _dgAddressBook_DoubleClick(object sender, EventArgs e)
        {
            if (_dgAddressBook.SelectedItems.Count <= 0)
                return;

            int index = _dgAddressBook.SelectedItems[0].Index;
            AddressDetail ad = new AddressDetail(XMLParse.ContactList, index);
            ad.ShowDialog();
            populateData(XMLParse.ContactList);
            
        }

        private void btnAdd_Click(object sender, EventArgs e)
        {
            AddressDetail ad = new AddressDetail();
            ad.ShowDialog();
            populateData(XMLParse.ContactList);
        }

        private void btnExit_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void ViewToolbar_Click(object sender, EventArgs e)
        {
            if (grbToolbar.Visible)
            {
                grbToolbar.Visible = false;
                this.mnuViewToolbar.Checked = false;
            }
            else
            {
                grbToolbar.Visible = true;
                this.mnuViewToolbar.Checked = true;
            }
        }

        private void txtSearch_KeyPress(object sender, KeyPressEventArgs e)
        {
            //If enter key was pressed then search for that key in database and populate the list.
            if (e.KeyChar == (char)13)
            {
                
                string searhName = txtSearch.Text;
                List<Contacts> searchedContactList = new List<Contacts>();

                foreach (Contacts contact in XMLParse.ContactList)
                {
                    if(contact.FName.IndexOf(searhName,StringComparison.CurrentCultureIgnoreCase) != -1)
                        searchedContactList.Add(contact);
                }

                populateData(searchedContactList);
                
            }

        }

        private void btnDelete_Click(object sender, EventArgs e)
        {
          //Check if any row was selected.
            if (_dgAddressBook.SelectedItems.Count <= 0)
                return;
            
            DialogResult dr = MessageBox.Show("This will delete the contact premanently. Are you sure?. ", "Delete Record Conformation", MessageBoxButtons.YesNo);
            if (Convert.ToString(dr) == "Yes")
            {
                //find the email as that is the key
                string email = _dgAddressBook.SelectedItems[0].SubItems[10].Text;
                XMLParse.deleteContact(email);
                populateData(XMLParse.ContactList);
            }
            

        }






    }
}