MapAreaClick Event

Visual Basic
C#

'Declaration
 
Public Event MapAreaClick As MapAreaClickEventHandler

'Usage
 
Dim instance As FpChart
Dim handler As MapAreaClickEventHandler
 
AddHandler instance.MapAreaClick, handler

public event MapAreaClickEventHandler MapAreaClick

The event handler receives an argument of type MapAreaClickEventArgs containing data related to this event. The following MapAreaClickEventArgs properties provide information specific to this event.

Property	Description
MapAreaInfo	Gets or sets the MapAreaInfo indicates the event source.

Each map area on the client side corresponds to a chart element (plot area, legend, series, etc...). The RenderMapArea property should be set to true to use this event.

The EnableClickEvent property specifies whether the Click event fires.

The MapAreaClick event fires if the RenderMapArea property is true and the EnableClickEvent property is false. If the RenderMapArea property is false and the EnableClickEvent property is true, only the Click event fires. If the RenderMapArea property is true and the EnableClickEvent property is true, the MapAreaClick event fires if the user clicks on a chart element. The Click event fires if the user clicks on the chart background.

The HotSpotMode property is used if RenderMapArea is true. HotSpotMode determines the behavior when the user clicks in a map area. The options are inactive, navigate, and post back. The inactive option is useful if you wish to display a tooltip in the map area. If the HotSpotMode is set to post back, the MapAreaClick and Client events are fired. If the RenderMapArea property is false, the HotSpotMode property has no effect.

This example uses the MapAreaClick event.

C#

FpChart1.RenderMapArea = true;
FpChart1.HotSpotMode = HotSpotMode.PostBack;

protected void FpChart1_MapAreaClick(object sender, MapAreaClickEventArgs e)
{
HitTest hitTest = this.FpChart1.HitTest(e.MapAreaInfo);
this.Label1.Text = hitTest.ToString();
}

Visual Basic

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If (Me.IsPostBack) Then Return
        FpChart1.RenderMapArea = True
        FpChart1.HotSpotMode = HotSpotMode.PostBack
End Sub

Protected Sub FpChart1_MapAreaClick(ByVal sender As Object, ByVal e As FarPoint.Web.Chart.MapAreaClickEventArgs) Handles FpChart1.MapAreaClick
        Dim hit As FarPoint.Web.Chart.HitTest
        hit = FpChart1.HitTest(e.MapAreaInfo)
        ListBox1.Items.Add(hit.ToString())
End Sub

Target Platforms: Windows 7, Windows 8, Windows 10, Windows Vista, Windows Server 2003, Windows Server 2008, Windows Server 2012, Windows XP Professional

Reference

FpChart Class
FpChart Members