CompareTo not working for DateTime

What i meant was that i have a class which i want to sort by a datetime field. Anyway, i am stuck...i really don't have any other solution right now. 

Below i post the code for the 4 ways i tried to implement CompareTo and the rest of the code, up to the point where i bind the list to the gridview.

This is the CompareTo method:

public int CompareTo(Issue to)
{
//VER 1
//if (this.LastStatusDate.Year > to.LastStatusDate.Year) return 1;
//if ((this.LastStatusDate.Year == to.LastStatusDate.Year) &&
// (this.LastStatusDate.Month > to.LastStatusDate.Month)) return 1;
//if ((this.LastStatusDate.Year == to.LastStatusDate.Year) &&
// (this.LastStatusDate.Month == to.LastStatusDate.Month) &&
// (this.LastStatusDate.Day > to.LastStatusDate.Day)) return 1;
//if ((this.LastStatusDate.Year == to.LastStatusDate.Year) &&
// (this.LastStatusDate.Month == to.LastStatusDate.Month) &&
// (this.LastStatusDate.Day == to.LastStatusDate.Day) &&
// (this.LastStatusDate.Hour > to.LastStatusDate.Hour)) return 1;
//return 0;

//VER 2
//if (this.LastStatusDate.CompareTo(to.LastStatusDate)<0) return 1;
//else return 0;

//VER 3
//if (DateTime.Compare(this.LastStatusDate, to.LastStatusDate)<0) return 1;
//else return 0;

//VER 4
if (this.LastStatusDate > to.LastStatusDate) return 1;
else return 0;
}

Now the code in the aspx.cs, where i get the data, sort it and bind it:

if (!IsPostBack)
{
  AllIssuesList = (List)IssueDao.searchIssues("JobName", ""); 
   AllIssuesList.Sort();
   AllIssuesList.Reverse();
   grdIssues.DataSource = AllIssuesList;
   grdIssues.DataBind();
}

And the code for the searchIssues method (i use nhibernate):

public static IList searchIssues(string searchColumn, string searchText)
{
ISession session = NHibernateSessionFactory.OpenSession();
IList list = null;
try
{
IQuery query = null;
query = session.CreateQuery("select new Issue(I.IssueId,I.AbendCode,I.JobName,I.IssueDescription,I.Solution," +
"I.RootCause,I.ResolutionDelays,I.RootCauseCategory,I.IssueCategory,I.BusinessImpact," +
"I.NotifiedUser,I.Status,I.ReportedBy,I.ContendingSource,I.Time,I.OVSDTicketId,max(IL.LogTime))"+
" from Issue I,IssueLog IL where IL.IssueId=I.IssueId "+
"group by I.IssueId,I.AbendCode,I.JobName,I.IssueDescription,I.Solution,I.RootCause,I.ResolutionDelays,"+
"I.RootCauseCategory,I.IssueCategory,I.BusinessImpact,I.NotifiedUser,I.Status,I.ReportedBy,"+
"I.ContendingSource,I.Time,I.OVSDTicketId ");
list = Useful.ConvertToGenericList(query.List());
}
catch (Exception ex)
{
Useful.setError("Error occured while getting issues ",ex);
}

session.Close();
return list;
}

The result of all this is a total mess. No order whatsoever.

P.S. Sam, sorry my english isn't perfect. Not everybody on this forum comes from english speaking countries.