BuildingCoder.CmdSheetData.Execute C# (CSharp) Метод

        public Result Execute(
            ExternalCommandData commandData,
            ref string message,
            ElementSet elements)
        {
            UIApplication app = commandData.Application;
              Document doc = app.ActiveUIDocument.Document;

              // retrieve all sheets

              FilteredElementCollector a
            = new FilteredElementCollector( doc );

              a.OfCategory( BuiltInCategory.OST_Sheets );
              a.OfClass( typeof( ViewSheet ) );

              // create a collection of all relevant data

              List<SheetData> data = new List<SheetData>();

              foreach( ViewSheet v in a )
              {
            // create some data for each sheet and add
            // to some serializable collection called Data
            SheetData item = new SheetData( v );
            data.Add( item );
              }

              // write out data collection to xml

              XmlTextWriter w = new XmlTextWriter(
            "C:/SheetData.xml", null );

              w.Formatting = Formatting.Indented;
              w.WriteStartDocument();
              w.WriteComment( string.Format(
            " SheetData from {0} on {1} by Jeremy ",
            doc.PathName, DateTime.Now ) );

              w.WriteStartElement( "ViewSheets" );

              foreach( SheetData item in data )
              {
            w.WriteStartElement( "ViewSheet" );

            w.WriteElementString( "IsPlaceholder",
              item.IsPlaceholder.ToString() );

            w.WriteElementString( "Name", item.Name );

            w.WriteElementString( "SheetNumber",
              item.SheetNumber );

            w.WriteEndElement();
              }
              w.WriteEndElement();
              w.WriteEndDocument();
              w.Close();

              return Result.Succeeded;
        }