Csharp/C Sharp/XML/XML ListView

Load XML file to DataTable then add DataTable to ListView

/*
<?xml version="1.0" standalone="yes"?>
<NewDataSet>
  <Employee>
    <ID>8</ID>
    <Name>Joe</Name>
  </Employee>
</NewDataSet>
*/
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
    private System.Windows.Forms.Button cmdFillList;
    private System.Windows.Forms.ListView listView;
    private System.Windows.Forms.CheckBox chkGroups;
      public Form1() {
            InitializeComponent();
      listView.View = View.Tile;
      listView.TileSize = new Size(300, 50);
      FillList();
      }
    public static DataTable GetProducts()
    {
      DataSet dsStore = new DataSet();
      dsStore.ReadXml("myXmlFile.xml");
      return dsStore.Tables["Employee"];
    }
    public static DataTable GetCategories()
    {
      DataSet dsStore = new DataSet();
      dsStore.ReadXml("myXmlFile.xml");
      return dsStore.Tables["Employee"];
    }
    private void cmdFillList_Click(object sender, EventArgs e)
    {
      FillList();
    }
    private void FillList()
    {
      listView.Items.Clear();
      if (listView.Groups.Count == 0)
      {
        DataTable dtGroups = GetCategories();
        foreach (DataRow dr in dtGroups.Rows)
        {
          listView.Groups.Add(dr["ID"].ToString(), dr["Name"].ToString());
        }
      }
      listView.ShowGroups = chkGroups.Checked;
      DataTable dtProducts = GetProducts();
      listView.BeginUpdate();
      foreach (DataRow dr in dtProducts.Rows)
      {
        ListViewItem listItem = new ListViewItem(dr["Name"].ToString());
        listItem.ImageIndex = 0;
        listItem.Group = listView.Groups[dr["ID"].ToString()];
        listItem.SubItems.Add(dr["ID"].ToString());
        listView.Items.Add(listItem);
      }
      if (listView.Columns.Count == 0)
      {
        listView.Columns.Add("Product", 100, HorizontalAlignment.Left);
        listView.Columns.Add("ID", 100, HorizontalAlignment.Left);
        listView.Columns.Add("Description", 100, HorizontalAlignment.Left);
      }
      listView.EndUpdate();
    }
    private void NewView(object sender, System.EventArgs e)
    {
      listView.View = (View)(((Control)sender).Tag);
    }
    private void listView_ColumnClick(object sender, ColumnClickEventArgs e)
    {
      ListViewItemComparer sorter = listView.ListViewItemSorter as ListViewItemComparer;
      if (sorter == null)
      {
        sorter = new ListViewItemComparer(e.Column);
        listView.ListViewItemSorter = sorter;
      } else {
        if (sorter.Column == e.Column && !sorter.Descending)
        {
          sorter.Descending = true;
          listView.Sorting = SortOrder.Descending;        
        }
        else
        {
          listView.Sorting = SortOrder.Ascending;
          sorter.Descending = false;
          sorter.Column = e.Column;
        }
      }  
      listView.Sort();
    }
    private void cmdResizeColumns_Click(object sender, EventArgs e)
    {
      listView.AutoResizeColumns(ColumnHeaderAutoResizeStyle.HeaderSize);
    }

    private void listView_SelectedIndexChanged(object sender, EventArgs e)
    {
      if (listView.SelectedItems.Count > 0)
        Console.WriteLine(listView.SelectedItems[0].SubItems[2].Text);
    }
    private void chkGroups_CheckedChanged(object sender, EventArgs e)
    {
      FillList();
    }
    private void InitializeComponent()
    {
      this.cmdFillList = new System.Windows.Forms.Button();
      this.listView = new System.Windows.Forms.ListView();
      this.chkGroups = new System.Windows.Forms.CheckBox();
      this.SuspendLayout();
      // 
      // cmdFillList
      // 
      this.cmdFillList.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
      this.cmdFillList.FlatStyle = System.Windows.Forms.FlatStyle.System;
      this.cmdFillList.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
      this.cmdFillList.Location = new System.Drawing.Point(269, 195);
      this.cmdFillList.Name = "cmdFillList";
      this.cmdFillList.Size = new System.Drawing.Size(114, 24);
      this.cmdFillList.TabIndex = 7;
      this.cmdFillList.Text = "Fill List";
      this.cmdFillList.Click += new System.EventHandler(this.cmdFillList_Click);
      // 
      // listView
      // 
      this.listView.AllowColumnReorder = true;
      this.listView.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
            | System.Windows.Forms.AnchorStyles.Left)
            | System.Windows.Forms.AnchorStyles.Right)));
      this.listView.FullRowSelect = true;
      this.listView.GridLines = true;
      this.listView.Location = new System.Drawing.Point(7, 8);
      this.listView.MultiSelect = false;
      this.listView.Name = "listView";
      this.listView.Size = new System.Drawing.Size(254, 282);
      this.listView.Sorting = System.Windows.Forms.SortOrder.Ascending;
      this.listView.TabIndex = 6;
      this.listView.SelectedIndexChanged += new System.EventHandler(this.listView_SelectedIndexChanged);
      this.listView.ColumnClick += new System.Windows.Forms.ColumnClickEventHandler(this.listView_ColumnClick);
      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
      this.ClientSize = new System.Drawing.Size(390, 381);
      this.Controls.Add(this.listView);
      this.Controls.Add(this.cmdFillList);
      this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
      this.Name = "Form1";
      this.Text = "ListView Example";
      this.ResumeLayout(false);
      this.PerformLayout();
    }
  [STAThread]
  static void Main()
  {
    Application.EnableVisualStyles();
    Application.Run(new Form1());
  }
}
  public class ListViewItemComparer : System.Collections.IComparer
  {
    private int column;
    public int Column
    {
      get { return column; }
      set { column = value; }
    }
    private bool numeric = false;
    public bool Numeric
    {
      get { return numeric; }
      set { numeric = value; }
    }
    private bool descending = false;
    public bool Descending
    {
      get { return descending; }
      set { descending = value; }
    }
    public ListViewItemComparer(int columnIndex)
    {
      Column = columnIndex;
    }
    public int Compare(object x, object y)
    {
      ListViewItem listX, listY;
      if (descending)
      {
        listY = (ListViewItem)x;
        listX = (ListViewItem)y;
      }
      else
      {
        listX = (ListViewItem)x;
        listY = (ListViewItem)y;
      }
      if (Numeric)
      {
        decimal valX, valY;
        Decimal.TryParse(listX.SubItems[Column].Text, out valX);
        Decimal.TryParse(listY.SubItems[Column].Text, out valY);
        return Decimal.rupare(valX, valY);
      }
      else
      {
        return String.rupare(
          listX.SubItems[Column].Text, listY.SubItems[Column].Text);
      }
    }
  }