How to get column data based on list selection ?

Hello,

Am using this code to get all the list name from in dropdown selector now I want to display first 10 name and city based on the list selection.How we can modify this code to get first 10 name based on list selection.

 protected void Page_Load(object sender, EventArgs e)
        {
            SPSite mySite = SPContext.Current.Site;
            SPWebCollection myWebCollection = mySite.AllWebs;
            foreach (SPWeb myWeb in myWebCollection)
            {
                SPListCollection myListCollection = myWeb.Lists;
                foreach (SPList myList in myListCollection)
                {
                    DropDownList1.Items.Add(new ListItem(SPEncode.HtmlEncode(myList.Title)));
                }
                myWeb.Dispose();
            }
        }

Thanks,