Copy and Paste Drawing Sheet Example (C#)

//-----------------------------------------------------------------------------
// Preconditions:
// 1. Open a drawing document.
// 2. Open an Immediate Window.
// 3. Rename the namespace of this macro to match the name of your C# project.
//
// Postconditions:
// Sheet1 is copied and pasted to three locations in the drawing document.
//------------------------------------
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;
using System.Diagnostics;
namespace PasteSheet_CSharp.csproj
{
    partial class SolidWorksMacro
    {

        DrawingDoc Part;
        ModelDoc2 swModel;
        bool boolstatus;

        public void Main()
        {

            swModel = (ModelDoc2)swApp.ActiveDoc;
            Part = (DrawingDoc)swModel;

            if ((Part == null))
            {
                Debug.Print(" Please Open Drawing Document ");
            }
            else
            {
                Sheet currentsheet = default(Sheet);
                currentsheet = (Sheet)Part.GetCurrentSheet();
                swModel.EditCopy();

                boolstatus = swModel.Extension.SelectByID2("Sheet1", "SHEET", 0, 0, 0, false, 0, null, 0);

                boolstatus = Part.PasteSheet((int)swInsertOptions_e.swInsertOption_BeforeSelectedSheet, (int)swRenameOptions_e.swRenameOption_Yes);

                Part.ActivateSheet(currentsheet.GetName());

                boolstatus = Part.PasteSheet((int)swInsertOptions_e.swInsertOption_AfterSelectedSheet, (int)swRenameOptions_e.swRenameOption_No);

                Part.ActivateSheet(currentsheet.GetName());

                boolstatus = Part.PasteSheet((int)swInsertOptions_e.swInsertOption_MoveToEnd, (int)swRenameOptions_e.swRenameOption_Yes);
            }
        }
        public SldWorks swApp;
    }
}