i am having problem in nested loops

This is my code..i got problem in foreach (int idresult in idsp) loop...it is not working..it always

get same id not going forward to nextid that is why i am having problem.

var rep = (from rs in banat.tblResultIds where rs.ResultId == id select rs).ToList();

List idsp = new List();

foreach(var item in rep)

{

idsp.Add(item.ResultDetailId);

}

string subjid="";

string obtainmarks = "";

var retp = (from rs in banat.tblSubjectDetails where rs.ClassId == classid && rs.Shashmahi == "TRUE" select rs).ToList();

bool doStuff = true;

foreach (var im in retp)

{

subjid = im.SubjectDetailId.ToString();

foreach (int idresult in idsp)

{

//doStuff = true;

foreach (TextBox txtSubject in pnlSubject.Controls.OfType())

{

//string myName = txtSubject.ID;

//subjid = myName.Remove(0, 7);

//subjid = item.SubjectDetailId.ToString();

foreach (TextBox textBox in pnlObtainMarks.Controls.OfType())

{

string obt = textBox.ID;

string ob = obt.Remove(0, 7);

TextBox tb = (TextBox)pnlObtainMarks.FindControl("Obtain" + subjid);

obtainmarks = tb.Text.Trim();

doStuff = false;

break;

}

doStuff = false;

break;

}

var dt = (from rs in banat.tblResultIds where rs.ResultDetailId == idresult select rs).FirstOrDefault();

if(dt!=null)

{

dt.ResultId = id;

dt.SubjectDetailId = Convert.ToInt32(subjid);

dt.ObtainMarks = Convert.ToInt32(obtainmarks);

banat.SaveChanges();

}

else

{

tblResultId rsid = new tblResultId();

dt.SubjectDetailId = Convert.ToInt32(subjid);

dt.ObtainMarks = Convert.ToInt32(obtainmarks);

dt.ResultId = id;

banat.tblResultIds.Add(dt);

banat.SaveChanges();

}

doStuff = false;

break;

}

}