DATALIST PROBLEM IN USER CONTROL

/////////////////ASPX/////////////////////


<aspataList id="DataList1" runat="server">
<ItemTemplate>
<table>
<tr>
<td>

<%# DataBinder.Eval(Container, "DataItem.CI_Billing_Email")%>
</td>
<td>
<%# DataBinder.Eval(Container, "Cart_ID")%>
</td>
</tr>
</table>


</ItemTemplate>

</aspataList>

//////////////////////////////////////////////////////

////////////////CODEBEHIN////////////////////

this.RDBCartList1.getHTML ();

cmd=RDBCartList1.SQL;



baglantim=new SqlConnection ();


baglantim.ConnectionString =data.Connection.ConnectionString;

baglantim.Open ();


SqlCommand mycmd=new SqlCommand(cmd,baglantim);


mycmd.ExecuteNonQuery ();

/*

rd=mycmd.ExecuteReader ();


while (rd.Read())

{

SqlDataReader rd;

Response.Write (rd["Cart_ID"] +"<br>");


}

*/


SqlDataAdapter da = new SqlDataAdapter ();

DataSet ds =new DataSet();




da.SelectCommand =mycmd;

da.Fill (ds,"MyTable");


DataList1.DataSource =ds;

DataList1.DataBind ();





When I run my code The datalist returns nothing to the screen . I tested my
connection and query , it works. When i run the code with comment (inside /*
*/ block) it works perfect. I think there is a problem with my datalist ?
What can be the problem ?