trying to do UL list by loops in a generalized way

Hierarchy layout

Table MenuH
Menu       Sub
      1      1
      2      2
      3      3
      3      4
      3      5
      5      6


Table Menu
ID     description
1      home
2      about us
3      contact
4      contact 1
5      contact 2
6      contact under 5


trying to do a heirarchal menu like above
the results to be,

<ul>
   <li>home</li>
   <li>about us</li>
   <li><contact>
        <ul>
            <li>contact 1</li>
            <li>contact 2
                  <ul>
                      <li>contract 5</li>
                  </ul>
             </li>
         </ul>
   </li>
</ul>


trying to write a few loops, in c#, and using MS SQL to do the above but not getting anywhere, could some one help?  thanks a lot
goodkAsked:
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Robert SchuttSoftware EngineerCommented:
Recursion is your friend ;-)

I added an <a href> but maybe you have another way to handle clicking on menu choices.
        // global/class var...
        SqlConnection oConn = new SqlConnection(@"Data Source=.\sqlexpress;Initial Catalog=eeQ_28266899;Trusted_Connection=SSPI;");

        protected string GetMenu(int prnt = 0) {
            string ret = string.Empty;
            string sSQL = "SELECT Menu.id, Menu.description FROM MenuH INNER JOIN Menu On Menu.id = MenuH.Sub WHERE ";
            string sWhere = (prnt == 0) ? "Menu = Sub" : string.Format("Menu = {0} AND Sub <> Menu", prnt);
            using (DataTable dt = new DataTable()) {
                using (SqlCommand cmd = new SqlCommand(sSQL + sWhere, oConn)) {
                    using (SqlDataAdapter da = new SqlDataAdapter(cmd)) {
                        da.Fill(dt);
                    }
                }
                if (dt.Rows.Count > 0) {
                    ret += "<ul>";
                    foreach (DataRow r in dt.Rows) {
                        ret += string.Format(
                            "<li><a href='menu.aspx?id={1}'>{0}</a>{2}</li>",
                            r["description"].ToString(),
                            r["id"].ToString(),
                            GetMenu(Int32.Parse(r["id"].ToString()))
                        );
                    }
                    ret += "</ul>";
                }
            }
            return ret;
        }

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And then simply add to your page:
<%= GetMenu() %>

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goodkAuthor Commented:
Detailed, Correct and to the point solution.  Thanks a lot  robert_schutt:
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C#

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