GraphicalView Link Item Formatting

Updated on May 7, 2026

RadGanttView allows formatting of individual links through the GraphicalViewLinkItemFormatting event. The following example demonstrates how to format links based on their type.

C#

private void radGanttView1_GraphicalViewLinkItemFormatting(object sender, GanttViewLinkItemFormattingEventArgs e)
{
    Color color = Color.Black;
    DashStyle dash = DashStyle.Solid;

    switch (e.Link.LinkType)
    {
        case TasksLinkType.FinishToFinish:
            dash = DashStyle.DashDotDot;
            color = Color.Red;
            break;
        case TasksLinkType.FinishToStart:
            dash = DashStyle.Dash;
            color = Color.Green;
            break;
        case TasksLinkType.StartToFinish:
            dash = DashStyle.DashDot;
            color = Color.Blue;
            break;
        case TasksLinkType.StartToStart:
            dash = DashStyle.Dot;
            color = Color.Black;
            break;
    }

    Pen pen = new Pen(color);
    pen.DashStyle = dash;
    pen.Width = 3;
    pen.LineJoin = LineJoin.Bevel;
    pen.EndCap = LineCap.ArrowAnchor;

    e.Pen = pen;
}

VB.NET

Private Sub RadGanttView1_GraphicalViewLinkItemFormatting(sender As Object, e As Telerik.WinControls.UI.GanttViewLinkItemFormattingEventArgs)
    Dim penColor As Color = Color.Black
    Dim dash As DashStyle = DashStyle.Solid

    Select Case e.Link.LinkType
        Case TasksLinkType.FinishToFinish
            dash = DashStyle.DashDotDot
            penColor = Color.Red
            Exit Select
        Case TasksLinkType.FinishToStart
            dash = DashStyle.Dash
            penColor = Color.Green
            Exit Select
        Case TasksLinkType.StartToFinish
            dash = DashStyle.DashDot
            penColor = Color.Blue
            Exit Select
        Case TasksLinkType.StartToStart
            dash = DashStyle.Dot
            penColor = Color.Black
            Exit Select
    End Select

    Dim pen As New Pen(penColor)
    pen.DashStyle = dash
    pen.Width = 3
    pen.LineJoin = LineJoin.Bevel
    pen.EndCap = LineCap.ArrowAnchor

    e.Pen = pen
End Sub

See Also

• GraphicalView item formatting
• Custom Painting
• TextView item formatting
• Themes
• Timeline item formatting