Developer -
VB.Net

Getting started

Download and install TerraExplorer Plus.
Create a new Windows Forms Application project in Visual Studio, using either C# or VB.Net:
- a. In Visual Studio, select File> New> Project.
- b. If you want to create a C# project: Select Visual C#> Windows> Windows Forms Application. Name the project TerraExplorerShowcase, and click OK.
- c. If you want to create a Visual Basic project: Select Visual Basic> Windows> Windows Forms Application. Name the project TerraExplorerShowcase, and click OK.
Add TerraExplorer ActiveX objects to the Toolbox.
- a. In Design view, right click the Toolbox, and select Choose Items.
- b. Click the COM Components tab and select the TE3DWindow Class, TEInformationWindow Class and TENavigationMap Class check-boxes.
- c. Click OK. Three icons are added to your toolbox: the 3D Window, the Information Window and the Navigation Map controls.
Add a 3D Window to the form.
- Click the 3D window control icon in the toolbox and drag it to the required location on your form.
Reference TerraExplorerX COM dll.
- a. From the Project menu, select Add References.
- b. Click the COM Components tab and locate TerraExplorerX 1.0 Type Library from the available references.
Add the using directive for TerraExplorerX namespace in the Form1 code.
```
Imports TerraExplorerX
```
Define a variable to hold a SGWorld object instance.
- Note: You will use this variable later to access extensive TerraExplorer API.
```
Private sgworld As SGWorld65
```
Initialize a SGWorld object.
- Note: This object will automatically find the ActiveX control that you have placed on the form and interact with it.
- Note: You should initialize this object only after the ActiveX object was already created, i.e. after the call to InitializeComponent() in the constructor.
```
sgworld = New SGWorld65
```

Now you can use SGWorld object to control the TerraExplorer ActiveX. The following code loads a .fly project and flies to a specific location.

Imports TerraExplorerX
 
Partial Public Class Form1
    Private sgworld As SGWorld65
    Public Sub New()
        InitializeComponent()
        sgworld = New SGWorld65()
    End Sub
 
    Private Sub Form1_Load(sender As Object, e As EventArgs)
        ' Register to OnLoadFinished globe event
        AddHandler sgworld.OnLoadFinished, AddressOf OnProjectLoadFinished
        ' Open Project in asynchronous mode
        Dim flyFile As String = "https://www.skylinesoft.com/SkylineGlobe/WebClient/PresentationLayer/WebClient/SkyglobeLB.fly"
        sgworld.Project.Open(flyFile, True, Nothing, Nothing)
        MessageBox.Show("Opening project " & flyFile & " in async mode")
    End Sub
 
    Private Sub OnProjectLoadFinished()
        MessageBox.Show("Received project loaded event. Click OK to fly to  Washington DC.")
        Dim Washington As IPosition65 = sgworld.Creator.CreatePosition(-77.036667, 38.895111, 1500, AltitudeTypeCode.ATC_TERRAIN_RELATIVE, 0, 0, 0, 0)
        sgworld.Navigate.FlyTo(Washington)
    End Sub
End Class

Download additional code samples and examples of TerraExplorer’s capabilities for C# or VB.Net.
- Note: Those samples require Visual Studio 2008.

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