Retrieveing Multiple Values From Session To Populate ListBox?

I am trying to retrieve multiple values from the session variable in which I stored the values as List. Here's the code I applied but this gives me only the lst value from the list in the output.

Array k= yourlist.ToArray();
for (Int32 i = 0; i < k.Length; i++)
{
Int32 x = Convert.ToInt32(k.GetValue(i));
SqlCommand cmd2 = new SqlCommand("select id,name from plugins where id =" + x, con);
SqlDataReader dr2 = cmd2.ExecuteReader();
if (dr2.HasRows)
{
while (dr.Read())
{
ListBox2.DataSource = dr2;
ListBox2.DataBind();
}
}
dr2.Close();
cmd2.Dispose();
}