# Construct 2D PolyLine Example (VB.NET)

This example shows how to construct a 2D PolyLine in a drawing document.

    '--------------------------------------------------------------
    ' Preconditions:
    ' 1. Create a VB.NET Windows console project.
    ' 2. Copy and paste this example into the VB.NET IDE.
    ' 3. Add a reference to:
    '    install_dir\APISDK\tlb\DraftSight.Interop.dsAutomation.dll.
    ' 4. Start DraftSight and open a document.
    ' 5. Start debugging the project.
    '
    ' Postconditions: A message box pops up when a 2D PolyLine is
    ' constructed in the drawing document.
    '----------------------------------------------------------------
    Imports DraftSight.Interop.dsAutomation

    Module Module1

        Sub Main()
            Dim dsApp As Application
            Dim dsDoc As Document
            Dim dsModel As Model
            Dim dsSketchManager As SketchManager
            Dim dsPolyline As PolyLine
            Dim coordinates(0 To 7) As Double
            Dim closed As Boolean

            'Connect to DraftSight
            dsApp = GetObject(, "DraftSight.Application")
    	dsApp.AbortRunningCommand() ' abort any command currently running in DraftSight to avoid nested commands

            'Get active document
            dsDoc = dsApp.GetActiveDocument()
            If Not dsDoc Is Nothing Then

                'Get model space
                dsModel = dsDoc.GetModel()

                'Get Sketch Manager
                dsSketchManager = dsModel.GetSketchManager()

                '2D PolyLine parameters
                coordinates(0) = 0 : coordinates(1) = 2
                coordinates(2) = 0 : coordinates(3) = 0
                coordinates(4) = 6 : coordinates(5) = 0
                coordinates(6) = 6 : coordinates(7) = 2
                closed = True

                'Construct a 2D PolyLine
                dsPolyline = dsSketchManager.InsertPolyline2D(coordinates, closed)

                If Not dsPolyline Is Nothing Then
                    MsgBox("2D PolyLine was added to drawing.")
                End If

            Else

                MsgBox("There are no open documents in DraftSight.")

            End If

        End Sub

    End Module