ASP.NET DataGrid Extension [Client Side Sortable/Dragable....] - Part I

using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Drawing;

namespace CodeWorks
{
	/// <summary>
	/// Summary description for CheckBoxFieldTemplate.
	/// </summary>
	
		public class CheckBoxFieldTemplate : ITemplate
		{
       
			
			private Color _selectColor;
			private Color _unSelectColor;
			private string _columnName = "";
			private int _rowReference = 0;
			public CheckBoxFieldTemplate(Color selectColor, Color unSelectColor)
			{
				this._selectColor = selectColor;
				this._unSelectColor = unSelectColor;
			}
			public CheckBoxFieldTemplate(string columnName,Color selectColor, Color unSelectColor)
			{
				this._selectColor = selectColor;
				this._unSelectColor = unSelectColor;
				this._columnName = columnName;
			}
			public void InstantiateIn(Control container)
			{
				_rowReference += 1;
				CheckBox chkSelect = new CheckBox();
				chkSelect.DataBinding += new EventHandler(this.OnDataBinding);
				chkSelect.Attributes.Add("onClick", "return HighLightRow(this," + _rowReference.ToString()+ ",'" + this._selectColor.Name + "','" + this._unSelectColor.Name + "');");
				
				chkSelect.EnableViewState=true;
				container.Controls.Add(chkSelect);
			}
			public void OnDataBinding(object sender, EventArgs e)
			{
				if (this._columnName.Length > 0)
				{
					CheckBox chk = (CheckBox)sender;
					DataGridItem container =
						(DataGridItem)chk.NamingContainer;
					chk.Checked  = Convert.ToBoolean(((DataRowView)container.DataItem)[this._columnName]);
                
				}
			}
		}
	
}