Timeline Item Formatting

Updated over 6 months ago

The TimelineItemFormatting event allows you to format the style and look of the items in the timeline container. The following example demonstrates how to make the timeline appear as a checkered flag.

C#

private void radGanttView1_TimelineItemFormatting(object sender, GanttViewTimelineItemFormattingEventArgs e)
{
    CultureInfo currentCulture = CultureInfo.CurrentCulture;
    int weekNo = currentCulture.Calendar.GetWeekOfYear(e.Item.Start, currentCulture.DateTimeFormat.CalendarWeekRule, currentCulture.DateTimeFormat.FirstDayOfWeek);
    Color color1 = Color.Black;
    Color color2 = Color.White;
    if (weekNo % 2 == 0)
    {
        color1 = Color.White;
        color2 = Color.Black;
    }
    e.ItemElement.TopElement.DrawFill = true;
    e.ItemElement.TopElement.DrawBorder = false;
    e.ItemElement.TopElement.GradientStyle = GradientStyles.Solid;
    e.ItemElement.TopElement.BackColor = color1;
    e.ItemElement.TopElement.ForeColor = color2;
    foreach (LightVisualElement element in e.ItemElement.BottomElement.Children)
    {
        element.BackColor = color2;
        element.ForeColor = color1;
        element.DrawBorder = false;
    }
}

VB.NET

Private Sub radGanttView1_TimelineItemFormatting(sender As Object, e As GanttViewTimelineItemFormattingEventArgs)
    Dim currentCulture As CultureInfo = CultureInfo.CurrentCulture
    Dim weekNo As Integer = currentCulture.Calendar.GetWeekOfYear(e.Item.Start, currentCulture.DateTimeFormat.CalendarWeekRule, currentCulture.DateTimeFormat.FirstDayOfWeek)
    Dim color1 As Color = Color.Black
    Dim color2 As Color = Color.White
    If weekNo Mod 2 = 0 Then
        color1 = Color.White
        color2 = Color.Black
    End If
    e.ItemElement.TopElement.DrawFill = True
    e.ItemElement.TopElement.DrawBorder = False
    e.ItemElement.TopElement.GradientStyle = GradientStyles.Solid
    e.ItemElement.TopElement.BackColor = color1
    e.ItemElement.TopElement.ForeColor = color2
    For Each element As LightVisualElement In e.ItemElement.BottomElement.Children
        element.BackColor = color2
        element.ForeColor = color1
        element.DrawBorder = False
    Next
End Sub

See Also

• GraphicalView item formatting
• GraphicalView Link Item formatting
• TextView item formatting
• Themes
• Custom Painting