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Rotate and Copy Entities Example (C#)

This example shows how to rotate and copy selected entities.

// 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 new document.
// 6. Construct multiple entities (e.g., circle, rectangle, 2D PolyLine,
//    etc.).
// 7. Start debugging the project.
// Postconditions:
// 1. When the prompt appears in the DraftSight command window,
//    select the entities to rotate and press the Enter key. The
//    selected entities are rotated.
// 2. Execution stops so that you can examine the drawing to
//    verify that the selected entities were rotated. Click the
//    Continue button in the IDE to continue.
// 3. The selected entities are copied.

using System;
using System.Collections.Generic;
using System.Text;
using DraftSight.Interop.dsAutomation;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.Diagnostics;

namespace RotateSelectedEntities
class Program
static void Main(string[] args)
//Connect to DraftSight application
            DraftSight.Interop.dsAutomation.Application dsApp = ConnectToDraftSight();
if (null == dsApp)

dsApp.AbortRunningCommand(); // abort any command currently running in DraftSight to avoid nested commands

//Get active document
            Document dsDoc = dsApp.GetActiveDocument();
if (null == dsDoc)
MessageBox.Show("There are no open documents in DraftSight.");

//Get model space
            Model dsModel = dsDoc.GetModel();

//Get Sketch Manager
            SketchManager dsSketchMgr = dsModel.GetSketchManager();

//Get selection manager
            SelectionManager dsSelectionMgr = dsDoc.GetSelectionManager();

//Get selection filter
            SelectionFilter dsSelectionFilter = dsSelectionMgr.GetSelectionFilter();

//Clear selection filter

//Add all entities to the selection filter
            foreach (dsObjectType_e entityType in Enum.GetValues(typeof(dsObjectType_e)))

//Activate selection filter
            dsSelectionFilter.Active = true;

//Get command message object
            CommandMessage dsCommandMessage = dsApp.GetCommandMessage();

//Clear previous selection

//Run prompt to select entities
            bool singleSelection = false;
string prompt = "Select entities";
string errorMessage = "Unknown entity";
if (dsCommandMessage.PromptForSelection(singleSelection, prompt, errorMessage))
//Get number of selected objects
                int count = dsSelectionMgr.GetSelectedObjectCount(dsSelectionSetType_e.dsSelectionSetType_Previous);

DispatchWrapper[] dsEntities = new DispatchWrapper[count];
int[] dsEntityTypes = new int[count];

//Get selected entities
                for (int index = 0; index < count; ++index)
dsObjectType_e entityType;
object selectedEntity = dsSelectionMgr.GetSelectedObject(dsSelectionSetType_e.dsSelectionSetType_Previous, index, out entityType);
                    dsEntities[index] =
new DispatchWrapper(selectedEntity);

                    dsEntityTypes[index] = (

//Rotation parameters
                double pivotPointX = 0.0;
double pivotPointY = 0.0;
double rotateAngle = Math.PI / 4; //In radians

                //Rotate entities
                dsSketchMgr.RotateEntities(pivotPointX, pivotPointY, rotateAngle, dsEntityTypes, dsEntities);

//Stop execution
                //Examine the document

//Click the Continue button in the IDE

                //Copy parameters
                double displacementX = 2.0;
double displacementY = 2.0;
double displacementZ = 0.0;

//Copy entities
                object[] dsEntityCopies = dsSketchMgr.CopyEntities2(displacementX, displacementY, displacementZ, dsEntityTypes, dsEntities);


private static DraftSight.Interop.dsAutomation.Application ConnectToDraftSight()

            DraftSight.Interop.dsAutomation.Application dsApp = null;

//Connect to DraftSight
                dsApp = (DraftSight.Interop.dsAutomation.Application)Marshal.GetActiveObject("DraftSight.Application");
catch (Exception ex)
MessageBox.Show("Failed to connect to DraftSight. Cause: " + ex.Message);
                dsApp =

return dsApp;

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