C# Macro for Revit - First sample

VB.NET version

using System;
using Autodesk.Revit;
using Autodesk.Revit.Creation;
using Autodesk.Revit.Elements;
using Autodesk.Revit.Geometry;
using Autodesk.Revit.Symbols;
using Autodesk.Revit.Structural.Enums;

namespace versione2009
{
    [System.AddIn.AddIn("ThisDocument", Version = "1.0", Publisher = "", Description = "")]
    public partial class ThisDocument
    {
        private void Module_Startup(object sender, EventArgs e)
        {

        }

        private void Module_Shutdown(object sender, EventArgs e)
        {

        }

        #region VSTA generated code
        private void InternalStartup()
        {
            this.Startup += new System.EventHandler(Module_Startup);
            this.Shutdown += new System.EventHandler(Module_Shutdown);
        }
        #endregion

        public void primoesempio()
        {

            string fileName = @"C:\Stefano\versionecsharp\pilastroFascia.rfa";

            //prova a caricare la famiglia

            FamilySymbol family = null;

            string list = "pilastroFascia";

            if (!Document.LoadFamilySymbol(fileName, list, out family))
            {
                throw new Exception("Unable to load " + fileName);
            }

            int i;
            int n = 9;

            for (i = 0; i <= n; i = i + 1)
            {
               
                    XYZ location = Application.Create.NewXYZ(0.0, 0.0, i * 10);

                    FamilyInstance unico = Create.NewFamilyInstance(location, family, StructuralType.NonStructural);
                    Parameter generico = unico.get_Parameter("topolino");
               

                generico.Set(Math.PI * 0.5 * i/10);

            }

            }     
    }
}