TimerRuler value

[Christie Admin]

Hi,

after using the ScrollTimeRuler function, is it possible to get the value of the TimeRuler for future reference???

Thank's
Alain

[Konstantina]

Hi Alain,

After scrolling you could check the FirstVisibleTime property of the ScheduleView, which will show you the time at the top of the control.

Hope this helps.

Regards,
Konstantina
Telerik

 

 

[Christie Admin]

Hi Konstantina,

When I start my application, the FirstVisibleTime is 8:00AM, if I scroll down, the FirstVisibleTime become 8:15AM then if I scroll up, the FirstVsibleTime become 8:00PM... Can you explain that ???

here is the piece of code I have in my usercontrol:

this.ScheduleView.AddHandler(RadScheduleView.PreviewMouseWheelEvent, new MouseWheelEventHandler(ScheduleView_OnMouseWheel), true);

private void ScheduleView_OnMouseWheel(object sender, MouseWheelEventArgs e)
{                                
    if (e.Delta > 0) // Up
    {
        this.ScheduleView.ScrollTimeRuler(this.ScheduleView.FirstVisibleTime.Subtract(TimeSpan.FromMinutes(15)), true, true);
    }
    else // Down
    {
        this.ScheduleView.ScrollTimeRuler(this.ScheduleView.FirstVisibleTime.Add(TimeSpan.FromMinutes(15)), true, true);
    }

    e.Handled = true;
}

Thank's
Alain

[Kalin]

Hello Alain,

The reason for the explained behavior is in the ScrollViewed going on the bottom again when scrolled to value less than the DayStartTime. What I can suggest you would be to simply check if there is enough space to scroll up and if not to set the FirstVisibleTime to be equal to the DayStartTime of the current ActiveViewDefinition. The exact approach is demonstrated in the following code snippet:

private void ScheduleView_OnMouseWheel(object sender, MouseWheelEventArgs e)
{
    if (e.Delta > 0) // Up
    {
        if (this.ScheduleView.FirstVisibleTime >= this.ScheduleView.ActiveViewDefinition.DayStartTime + TimeSpan.FromMinutes(15))
        {
            this.ScheduleView.ScrollTimeRuler(this.ScheduleView.FirstVisibleTime.Subtract(TimeSpan.FromMinutes(15)), true, true);
        }
        else
        {
            this.ScheduleView.FirstVisibleTime = this.ScheduleView.ActiveViewDefinition.DayStartTime;
        }
    }
    else // Down
    {
        this.ScheduleView.ScrollTimeRuler(this.ScheduleView.FirstVisibleTime.Add(TimeSpan.FromMinutes(15)), true, true);
    }

    e.Handled = true;
}

Hope this helps.

Regards,
Kalin
Telerik