add checkbox in dropdowlist asp .net c#

Question

i have below code from a website that display image in dropdownlist but how do i add a code that also add check box in the dropdownlist. please anyone help me. Tq so much.

 

namespace ProjectDemo_Asp.et

{

public partial class ddlitemwithicon : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

// if (!IsPostBack)

{

DataTable objdt = new DataTable();

objdt = GetDataForChart();

DropDownList1.DataSource = objdt;

DropDownList1.DataTextField = "Country";

DropDownList1.DataValueField = "Id";

DropDownList1.DataBind();

//Now add class to each and every item in dropdown

//Now, add a "SysCode" attribute to each item in the dropdown list

string imageURL = "";

for (int i = 0; i < DropDownList1.Items.Count; i++)

{

switch (DropDownList1.Items[i].Text)

{

case "India": imageURL = "Images/flag-of-India.png";

break;

case "Kuwait": imageURL = "Images/flag-of-Kuwait.png";

break;

case "Egypt": imageURL = "Images/flag-of-Egypt.png";

break;

case "Bangladesh": imageURL = "Images/flag-of-Bangladesh.png";

break;

case "Afghanistan": imageURL = "Images/flag-of-Afghanistan.png";

break;

}

ListItem item = DropDownList1.Items[i];

item.Attributes["style"] = "background: url(" + imageURL + ");background-repeat:no-repeat;";

}

}

}

/// This method will provide data

/// In this methos you can fatch data from DB and pass it to chart control

///

public DataTable GetDataForChart()

{

DataTable _objdt = new DataTable();

_objdt.Columns.Add("Country", typeof(string));

_objdt.Columns.Add("Id", typeof(long));

_objdt.Columns.Add("LabelValue");

var _objrow = _objdt.NewRow();

_objrow["Country"] = "India";

_objrow["Id"] = 1;

_objdt.Rows.Add(_objrow);

_objrow = _objdt.NewRow();

_objrow["Country"] = "Kuwait";

_objrow["Id"] = 2;

_objdt.Rows.Add(_objrow);

_objrow = _objdt.NewRow();

_objrow["Country"] = "Egypt";

_objrow["Id"] = 3;

_objdt.Rows.Add(_objrow);

_objrow = _objdt.NewRow();

_objrow["Country"] = "Bangladesh";

_objrow["Id"] = 4;

_objdt.Rows.Add(_objrow);

_objrow = _objdt.NewRow();

_objrow["Country"] = "Afghanistan";

_objrow["Id"] = 5;

_objdt.Rows.Add(_objrow);

return _objdt;

}

}

}