Hello Marvin,

The only thing that is really relevant here is the StartDate of the Project, as the EndDate will be determined by the length of the tasks that you set up with respect to the StartDate that is set.

There doesn't actually exist a mapping to the Project StartDate that I am personally aware of. I would recommend in this case that you query your data and get the earliest "AUF_VDAT" DateTime, and assign it to your Project.StartDate, as this will ensure that your Project starts when the first Task is meant to start.

Please let me know if you have any other questions or concerns on this matter.

Hello Andrew,

how should it look like if the start date is "AUF_VDAT" and the end date is "AUF_BDAT"?

Thanks for the answer. 

Hello Marvin,

Thank you for your update.

From the code that you have provided, everything looks ok. What I am curious about now, though is how your Project is actually set up in this case. Namely, the Project element that exists at this.ultraGanttView1.CalendarInfo.Projects[0]. More specifically, have you set the StartDate on that particular Project? If not, the tasks in your Project will be reformatted based on today's date.

Please let me know if you have any other questions or concerns on this matter.

Hello Andrew,

thanks for the fast reply.

DataSet ds = new DataSet();
            OdyDataAdapter odyDa = new OdyDataAdapter("SELECT * FROM AUFKOPF", new OdyConnection());
            odyDa.Fill(ds, "AUFKOPF");
            ds.Tables[0].Columns.Add("Duration", typeof(TimeSpan));
            foreach (DataRow row in ds.Tables[0].Rows)
            {
                row["Duration"] = (DateTime)row["AUF_BDAT"] - (DateTime)row["AUF_VDAT"];
            }
            this.ultraCalendarInfo1.ResetDateSettings();

            this.ultraCalendarInfo1.DataBindingsForTasks.BindingContext = this.BindingContext;
            this.ultraCalendarInfo1.DataBindingsForProjects.BindingContext = this.BindingContext;

            

            this.ultraCalendarInfo1.DataBindingsForTasks.SetDataBinding(ds, "AUFKOPF");


            this.ultraCalendarInfo1.DataBindingsForTasks.NameMember = "AUF_ANR";
            this.ultraCalendarInfo1.DataBindingsForTasks.DurationMember = "Duration";
            this.ultraCalendarInfo1.DataBindingsForTasks.StartDateTimeMember = "AUF_VDAT";
            this.ultraCalendarInfo1.DataBindingsForProjects.StartDateMember = "AUF_VDAT";

            

            this.ultraGanttView1.CalendarInfo = this.ultraCalendarInfo1;
            this.ultraGanttView1.Project = this.ultraGanttView1.CalendarInfo.Projects[0];

Here is my code -> "AUF_VDAT" is my start date, "AUF_BDAT" should be my EndDate.