# Construct RichLine Example (C#)

This example shows how to construct a RichLine.

    //--------------------------------------------------------------
    // Preconditions:
    // 1. Create a C# Windows console project.
    // 2. Copy and paste this example into the C# IDE.
    // 3. Add a reference to:
    //    install_dir\APISDK\tlb\DraftSight.Interop.dsAutomation.dll.
    // 4. Add references to System and System.Windows.Forms.
    // 5. Start DraftSight and open a document.
    // 6. Start debugging the project.
    //
    // Postconditions: A message box pops up when a RichLine is
    // constructed in the drawing document.
    //----------------------------------------------------------------
    using DraftSight.Interop.dsAutomation;
    using System;
    using System.Runtime.InteropServices;
    using System.Windows.Forms;
    static class Module1
    {
        public static void Main()
        {
            DraftSight.Interop.dsAutomation.Application dsApp;
            Document dsDoc = default(Document);
            Model dsModel = default(Model);
            SketchManager dsSketchManager = default(SketchManager);
            RichLine dsRichLine = default(RichLine);
            double[] coordinates = new double[6];
            bool closed;
            dsRichLineJustification_e justification = default(dsRichLineJustification_e);
            double scaleValue;
            string styleName;

            //Connect to DraftSight
            dsApp = (DraftSight.Interop.dsAutomation.Application)Marshal.GetActiveObject("DraftSight.Application");
    	dsApp.AbortRunningCommand(); // abort any command currently running in DraftSight to avoid nested commands
            //Get active document
            dsDoc = dsApp.GetActiveDocument();
            if (dsDoc != null)
            {
                //Get model space
                dsModel = dsDoc.GetModel();

                //Get Sketch Manager
                dsSketchManager = dsModel.GetSketchManager();

                //RichLine parameters
                coordinates[0] = 0.0;
                coordinates[1] = 0.0;
                coordinates[2] = 0.0;
                coordinates[3] = 7.0;
                coordinates[4] = 7.0;
                coordinates[5] = 0.0;
                scaleValue = 1.0;
                styleName = "Standard";
                closed = false;
                justification = dsRichLineJustification_e.dsRichLineJustification_Bottom;

                //Add a RichLine
                dsRichLine = dsSketchManager.InsertRichLine(coordinates, justification, scaleValue, styleName, closed);

                if (dsRichLine != null)
                {
                    MessageBox.Show("RichLine was added to drawing.");
                }
            }
            else
            {
                MessageBox.Show("There are no open documents in DraftSight.");
            }
        }
    }