# Construct Line Example (VB.NET)

This example shows how to construct a Line.

    '--------------------------------------------------------------
    ' 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 Line is
    ' constructed and its color changed 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 dsLine As Line
            Dim dsColor as Color
            Dim startX, startY, startZ, endX, endY, endZ As Double

            '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()

                'Line parameters
                startX = 1.0#
                startY = 1.0#
                startZ = 0.0#
                endX = 6.0#
                endY = 1.0#
                endZ = 0.0#

                'Construct a Line
                dsLine = dsSketchManager.InsertLine(startX, startY, startZ, endX, endY, endZ)

                If Not dsLine Is Nothing Then

                    'Change line's color
                    dsColor = dsLine.Color
                    dsColor.SetNamedColor(dsNamedColor_e.dsNamedColor_Red)
                    dsLine.Color = dsColor

                    MsgBox("Line was added to drawing and its color changed to red.")

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

        End Sub
    End Module