Silverlight 结合ArcGis 在地图上画线

原文 http://www.dotblogs.com.tw/justforgood/archive/2012/05/10/72085.aspx

先来看看完成后的画面，我从桃园画到*，再由*画到香港

Silverlight这边如下

我们在画面上新增一个线型的Symbol

程式码内如下

01	'Create by maggiore 2012/5/10 for dotblog

02	Public Sub New()

03

04	InitializeComponent()

05

06	Dim g_graphic_airport As GraphicsLayer '宣告一个图层物件变数

07

08	'将画面上的图层丢给图层物件

09	g_graphic_airport = TryCast(MyMap.Layers( "graphic_airport" ), GraphicsLayer)

10

11	Dim pGraphic As Graphic = New Graphic() 'Imports ESRI.ArcGIS.Client

12

13	Dim Point As New MapPoint 'Imports ESRI.ArcGIS.Client.Geometry

14

15

'桃园机场经纬度

16	Point.X = 121.23 '经度

17	Point.Y = 25.08 '纬度

18

19	Dim Point2 As New MapPoint 'Imports ESRI.ArcGIS.Client.Geometry

20

21

'*经纬度

22	Point2.X = 120.35 '经度

23	Point2.Y = 22.58 '纬度

24

25	Dim Point3 As New MapPoint 'Imports ESRI.ArcGIS.Client.Geometry

26

27

'香港经纬度

28	Point3.X = 113.92 '经度

29	Point3.Y = 22.31 '纬度

30

31

32	Dim pPolyline1 As ESRI.ArcGIS.Client.Geometry.Polyline = New ESRI.ArcGIS.Client.Geometry.Polyline()

33

34	Dim pPointCollection1 As ESRI.ArcGIS.Client.Geometry.PointCollection = New ESRI.ArcGIS.Client.Geometry.PointCollection()

35

36	pPointCollection1.Add(Point)

37	pPointCollection1.Add(Point2)

38	pPointCollection1.Add(Point3)

39

40	pPolyline1.Paths.Add(pPointCollection1)

41

42	pGraphic.Geometry = pPolyline1

43

44	pGraphic.Symbol = Line_black

45

46	g_graphic_airport.Graphics.Add(pGra​​phic)

47

48

End Sub

上述三个地点，小马在专案中是用for 回圈去捞资料库的资料，上面是为了让读者清楚简单了解，

才一个点一个点的示范喔!。

到这，读者应该可以明白之前小马是怎么耍白痴学食神在画面画个"赢"字了吧!(点或线皆可)