Adding 'Template Column with checkbox control inside' dynamically to 'ultrawebgrid' (Infragistics)

I spent considerable amount of time to figure out how to add Template Column to Ultrawebgrid dynamically with checkbox control inside it... so I am providing code that helps you to achieve it...

protected override void OnInit(EventArgs e)
{
base.OnInit(e);
if (!Page.IsPostBack) //If you dn't add this then you get duplicate columns
AddTemplateColumn();
}

private void AddTemplateColumn()
{
TemplatedColumn tmp = new TemplatedColumn(true); //true to maintain viewstate
tmp.Width = Unit.Parse("60px");
tmp.Key = "ColumnName";
tmp.BaseColumnName ="ColumnName";
tmp.AllowRowFiltering = true;
tmp.GatherFilterData = Infragistics.WebUI.Shared.DefaultableBoolean.False;
tmp.DataType = "system.String";
tmp.Header.Caption = "anycaption";
tmp.Header.Title = "anycaption";
ChkboxTemplate temp = new ChkboxTemplate();
tmp.CellTemplate = temp;
WebGrid.DisplayLayout.Bands[0].Columns.Add(tmp);
}

private class ChkboxTemplate : ITemplate
{
public void InstantiateIn(System.Web.UI.Control container)
{
CellItem cellitem = (CellItem)container;
CheckBox cbx = new CheckBox();
cbx.AutoPostBack = true;
cbx.EnableViewState = true;
cbx.Text = "TEXT";
cellitem.Controls.Add(cbx);
cellitem.Cell.AllowEditing = AllowEditing.No;
}
}

//you have to add this; if you want add some server side events for the control u added in template column
protected override void CreateChildControls()
{
base.CreateChildControls();

Infragistics.WebUI.UltraWebGrid.TemplatedColumn col = (TemplatedColumn)WebGrid.Columns.FromKey(columnName);
if (col != null)
{
for (int j = 0; j < WebGrid.Rows.Count; j++)
{
CheckBox cbx = ((CellItem)col.CellItems[j]).Controls[0] as CheckBox;
if (cbx != null)
{
cbx.ID = controlName;
cbx.CheckedChanged += new EventHandler(CheckBox_CheckedChanged);
}
}
}
}

//You must handle this event of the grid
void WebGrid_TemplatedColumnRestored(object sender, ColumnEventArgs e)
{
if (((TemplatedColumn)e.Column).CellTemplate == null)
{
((TemplatedColumn)e.Column).CellTemplate = new ChkboxTemplate();
}
}