Hi,

I have multiple task with link between them for constraints.
Each task is linked to a project.

Sample of my database :

Task1, starts on 01/01/2014, duration of 4 days.
Task2, starts when Task1 is over (05/01/2014), duration of 10 dayz. (Link to Task1 with TaskparentId)

Task3, start on 01/01/2014, duration of 15 days.
No substask

Task4, start on 01/01/2014, duration of 3 days. 
3 subtasks, linked to each other.  

I want to see all my task in the same gantt.  (See picture top image).
And I'd like to see what is the project of tasks.
(How to not show week ends ? nobody works week ends here ^^) 

But with your control, i created Data with 1 project (to see all my task in the same window), and add all task with parenttask.
Many tasks has wierd startdate , duration set to 0 and are "disabled" in the task table. (See picture bottom image).

I don't understand how your control works. 

The code for creating Data

foreach (DataRow dr in ds.Tables[0].Rows)
{
idTache = int.Parse(dr["IdTache"].ToString());
dtDebutTache = Convert.ToDateTime(dr["DteDebutTache"]);
dtFinTache = Convert.ToDateTime(dr["DteFinTache"]);
duration = dtFinTache - dtDebutTache;
if (dr["IdTacheParent"] != null && !string.IsNullOrEmpty(dr["IdTacheParent"].ToString()))
{
theTasks.Rows.Add(new Object[] { lstGuid[idTache], projectKey, dr["TxtNomTache"].ToString(), dtDebutTache, duration, lstGuid[Convert.ToInt32(dr["IdTacheParent"].ToString())], TaskConstraint.StartNoEarlierThan, null });
}
else
{
theTasks.Rows.Add(new Object[] { lstGuid[idTache], projectKey, dr["TxtNomTache"].ToString(), dtDebutTache, duration, null, TaskConstraint.AsSoonAsPossible, null });
}
}

 Thanks.