Revit二次开发之获得项目族预览图

using Autodesk.Revit.UI;

using Autodesk.Revit.DB;

using Autodesk.Revit.Attributes;

using System.Windows.Media.Imaging;

using Autodesk.Revit.UI.Selection;

 

namespace HelloWorld

{

    [Transaction(TransactionMode.Manual)]

    [Regeneration(RegenerationOption.Manual)]

    public class Test : IExternalCommand

    {

        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)

        {

            UIDocument uidoc = commandData.Application.ActiveUIDocument;

            Document doc = uidoc.Document;

            Reference refer = uidoc.Selection.PickObject(ObjectType.Element,new Filter(), "拾取目标构件");

 

            FamilyInstance instance = doc.GetElement(refer) as FamilyInstance;

            FamilySymbol symbol = instance.Symbol;

 

            //可以将image保存或是传递给PictreBox

            System.Drawing.Image image = symbol.GetPreviewImage(new System.Drawing.Size(100,100));

            

            return Result.Succeeded;

        }

    }

    //过滤器

    public class Filter : ISelectionFilter

    {

        public bool AllowElement(Element elem)

        {

            return elem.Category.Name == "管道附件" & elem.Name == "钢管_沟槽_同径90度弯头_DN25-600";

        }

 

        public bool AllowReference(Reference reference, XYZ position)

        {

            return false;

        }

    }

 

}