TimelineItemFormatting

[kim]

Hi~~

 

I want use the theme and change the  backcolor of timelineitem in TimelineItemFormatting

 

protected override void OnShown(EventArgs e)

{

     ThemeResolutionService.LoadPackageFile("CustomTheme.tssp");

     ganttview.ThemeName = "CustomTheme";

     // I Use CustomTheme after not change timeline backcolor

 

}

private void ganttView_TimelineItemFormatting(object sender, GanttViewTimelineItemFormattingEvent Args e)

{

    

    

      foreach(LightVisualElement element in e.ItemElement.BottomElement.Children)

      {

          if(holidayList.Contain(element .Start))

          {

             // not chage color

             // why?

                element.BackColor = Color.Red; 

                element.BackColor2 = Color.Red;

                element.BackColor3 = Color.Red;

                element.BackColor4 = Color.Red;

           }

     }

[Hristo]

Hi Kim,

You can change the back color of the timeline cell elements in the Visual Style Builder tool, please check the attached screenshot for reference. If you want to change the back color in the TimeLineItemFormatting event, please perform the validation e.Item.Start property. The code snippet you have shared will not compile because the LightVisualElement class does not have a Start property. The event handler below is working well on my end: 

private void RadGanttView1_TimelineItemFormatting(object sender, GanttViewTimelineItemFormattingEventArgs e)
{
    foreach (LightVisualElement element in e.ItemElement.BottomElement.Children)
    {
        Console.WriteLine(e.Item.Start);
        // Validate according to the Start

        element.BackColor = Color.Red;
    }
}

I hope this will help.

Regards,
Hristo
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