Hi

I read the sample and did the same but an error occurs on the line :

this.ugvProjects.CalendarInfo = this.uciGantt;

With NullreferenceException

Here my code :

ugvProjects is my UltraGanttView Control on winform
uciGantt is my ultracalendarInfo control on winform

private void LoadGantt()
{
DataSet ds = new DataSet();

ds.Tables.Add("PROJECTS");
ds.Tables[0].Columns.Add("ProjectID");
ds.Tables[0].Columns.Add("ProjectKey");
ds.Tables[0].Columns.Add("ProjectName");
ds.Tables[0].Columns.Add("ProjectStartTime" ,typeof(DateTime));

ds.Tables[0].Rows.Add(ds.Tables[0].NewRow());
ds.Tables[0].Rows[ds.Tables[0].Rows.Count - 1]["ProjectID"] = Guid.NewGuid();
ds.Tables[0].Rows[ds.Tables[0].Rows.Count-1]["ProjectKey"]="Key1";
ds.Tables[0].Rows[ds.Tables[0].Rows.Count-1]["ProjectName"]="Key 1 project name";
ds.Tables[0].Rows[ds.Tables[0].Rows.Count - 1]["ProjectStartTime"] = DateTime.Now.ToShortDateString();

ds.Tables[0].Rows.Add(ds.Tables[0].NewRow());
ds.Tables[0].Rows[ds.Tables[0].Rows.Count - 1]["ProjectID"] = Guid.NewGuid();
ds.Tables[0].Rows[ds.Tables[0].Rows.Count-1]["ProjectKey"]="Key2";
ds.Tables[0].Rows[ds.Tables[0].Rows.Count-1]["ProjectName"]="Key 2 project name";
ds.Tables[0].Rows[ds.Tables[0].Rows.Count - 1]["ProjectStartTime"] = DateTime.Now.ToShortDateString();

ds.Tables.Add("TASKS");
ds.Tables[1].Columns.Add("TaskID");
ds.Tables[1].Columns.Add("ProjectKey");
ds.Tables[1].Columns.Add("TaskName");
ds.Tables[1].Columns.Add("TaskStartTime", typeof(DateTime));
ds.Tables[1].Columns.Add("TaskDuration");
ds.Tables[1].Columns.Add("ParentTaskID");
ds.Tables[1].Columns.Add("TaskConstraint");
ds.Tables[1].Columns.Add("TaskPercentComplete");
ds.Tables[1].Columns.Add("AllProperties");

ds.Tables[1].Rows.Add(ds.Tables[1].NewRow());
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskID"] = Guid.NewGuid();
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["ProjectKey"] = "Key1";
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskName"] = "task 1 name";
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskStartTime"] = DateTime.Now.ToShortDateString();
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskDuration"] = 60;
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["ParentTaskID"] = ds.Tables[0].Rows[0]["ProjectID"];
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskConstraint"] = "StartNoEarlierThan";
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskPercentComplete"] = null;
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["AllProperties"] = null;

ds.Tables[1].Rows.Add(ds.Tables[1].NewRow());
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskID"] = Guid.NewGuid();
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["ProjectKey"] = "Key1";
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskName"] = "task 2 name";
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskStartTime"] = DateTime.Now.AddDays(60).ToShortDateString();
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskDuration"] = 40;
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["ParentTaskID"] = ds.Tables[0].Rows[0]["ProjectID"];
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskConstraint"] = "StartNoEarlierThan";
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskPercentComplete"] = null;
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["AllProperties"] = null;

ds.Tables[1].Rows.Add(ds.Tables[1].NewRow());
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskID"] = Guid.NewGuid();
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["ProjectKey"] = "Key2";
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskName"] = "task 3 name";
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskStartTime"] = DateTime.Now.AddDays(10).ToShortDateString();
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskDuration"] = 15;
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["ParentTaskID"] = ds.Tables[0].Rows[1]["ProjectID"];
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskConstraint"] = "StartNoEarlierThan";
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["TaskPercentComplete"] = null;
ds.Tables[1].Rows[ds.Tables[1].Rows.Count - 1]["AllProperties"] = null;

this.uciGantt.DataBindingsForTasks.BindingContextControl = this;
this.uciGantt.DataBindingsForProjects.BindingContextControl = this;

this.uciGantt.DataBindingsForProjects.SetDataBinding(ds, "Projects");
this.uciGantt.DataBindingsForProjects.IdMember = "ProjectID";
this.uciGantt.DataBindingsForProjects.KeyMember = "ProjectKey";
this.uciGantt.DataBindingsForProjects.NameMember = "ProjectName";
this.uciGantt.DataBindingsForProjects.StartDateMember = "ProjectStartTime";

this.uciGantt.DataBindingsForTasks.SetDataBinding(ds, "Tasks");
this.uciGantt.DataBindingsForTasks.NameMember = "TaskName";
this.uciGantt.DataBindingsForTasks.DurationMember = "TaskDuration";
this.uciGantt.DataBindingsForTasks.StartDateTimeMember = "TaskStartTime";
this.uciGantt.DataBindingsForTasks.IdMember = "TaskID";
this.uciGantt.DataBindingsForTasks.ProjectKeyMember = "ProjectKey";
this.uciGantt.DataBindingsForTasks.ParentTaskIdMember = "ParentTaskID";
this.uciGantt.DataBindingsForTasks.ConstraintMember = "TaskConstraint";
this.uciGantt.DataBindingsForTasks.PercentCompleteMember = "TaskPercentComplete";
this.uciGantt.DataBindingsForTasks.AllPropertiesMember = "AllProperties";

this.ugvProjects.CalendarInfo = this.uciGantt;
this.ugvProjects.Project = this.ugvProjects.CalendarInfo.Projects[1];

}

Thank you very much.