Public Property Custom As Boolean

Visual Basic (Usage)	Copy Code
Dim instance As MapArea Dim value As Boolean   instance.Custom = value   value = instance.Custom

public bool Custom {get; set;}

Return Value

If true the MapArea object is a custom object, if false it is a MapArea object that was automatically created for a chart element (e.g. a data point, etc.).

The following sample loops through all MapArea objects in the Page_Load event. If the map area is a custom area then we set the tooltip, overriding the previous tooltip value (if any).

Visual Basic

Copy Code

Imports Dundas.Charting.WebControl ... Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load     'declare a new MapArea object     Dim mapArea As New MapArea()     'loop through all map area objects, and if it is a custom object set the tooltip     For Each mapArea In Chart1.MapAreas         If mapArea.Custom Then mapArea.ToolTip = "This is a custom map area"     Next End Sub

There are two types of MapArea objects stored in the map areas collection:

• Map areas that are automatically created when an applicable chart element (e.g. data point, series, legend item or stripline object) has a non-empty ToolTip, Href or MapAreaAttributes property (note that other html elements necessary for a client-side image map are also created). In this case the dimensions and location of a map area are automatically determined by the chart element.

• Custom map areas that have a user-defined shape and coordinates. These custom map areas can be added at design-time using the Chart object's MapAreas property, or at run-time using the MapAreasCollection object's overloaded Add or Insert methods.

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family

Reference