Revit二次开发--过滤对象

1.获取元素的ID
通过UIDocument的Selection属性获取当前视图中选中的元素的ID/类型。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;


namespace GetAllElements
{
    [Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.
    ReadOnly)]
    public class Document_Selection : IExternalCommand
    {
        public Autodesk.Revit.UI.Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
        {
            try
            {
                //Select some elements in Revit before invoking this command

                //Get the handle of current document.
                UIDocument uidoc = commandData.Application.ActiveUIDocument;
                //Get the element selection of current document.
                Selection selection = uidoc.Selection;
                ElementSet collection = selection.Elements;

                if (0 == collection.Size)
                {
                    //If no elements selected.
                    TaskDialog.Showing("Revit", "You haven't selected any elements.");
                }
                else
                {
                    String info = "Ids of selected elements in the document are: ";
                    foreach (Element elem in collection)
                    {
                        info += "\n\t" + elem.Id.IntegerValue;//所选元素的ID
                        //info += "\n\t" + elem.GetTypr().ToString(); 此为所选元素的类型
                    }
                    TaskDialog.Show("Revit", info);
                }
            }
            catch (Exception e)
            {
                message = e.Message;
                return Autodesk.Revit.UI.Result.Failed;
            }
            return Autodesk.Revit.UI.Result.Succeeded;
        }
    }
}

2.用过滤器获取元素

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;


namespace GetAllElements
{
    [Autodesk.Revit.Attributes.Transaction(TransactionMode.ReadOnly)]
    public class Document_Selection : IExternalCommand
    {
        public Autodesk.Revit.UI.Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
        {
            Document document = revit.Application.ActiveUIDocument.Document;
            //Create a Filter to get all the doors in the document
            ElementClassFilter familyInstanceFilter = new ElementClassFilter(typeof(FamilyInstance));
            ElementCategoryFilter doorsCategoryfilter = new ElementCategoryFilter(BuiltInCategory.OST_Doors);
            LogicalAndFilter doorInstancesFilter = new LogicalAndFilter(familyInstanceFilter, doorsCategoryfilter);
            FilteredElementCollector collector = new FilteredElementCollector(document);
            ICollection<ElementId> doors = collector.WherePasses(doorInstancesFilter).ToElementIds();

            String prompt = "The ids of the doors in the current document are: ";
            foreach (ElementId id in doors)
            {
                prompt += "\n\t" + id.IntegerValue;
            }

            //Give the user some information
            TaskDialog.Show("Revit", prompt);
        }
    }
}

3.获取所选元素的全部值

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Autodesk.Revit.UI;
using Autodesk.Revit.DB;
using Autodesk.Revit.ApplicationServices;
using Autodesk.Revit.Attributes;
using System.Windows.Forms;
using Autodesk.Revit.UI.Selection;



//如果出现缺少using指令或程序集引用，去API上查

//点击revit中的墙，或者其他东西，会出现这个东西的全部信息

namespace GetAllParamentsValues
{
    [Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)]
    public class GetAllParamentsValues : IExternalCommand
    {
        public Autodesk.Revit.UI.Result Execute(ExternalCommandData CommandData, ref string messages, ElementSet elements)
        {
            UIApplication uiApp = CommandData.Application;
            Autodesk.Revit.ApplicationServices.Application app = uiApp.Application;
            Document doc = uiApp.ActiveUIDocument.Document;

            Selection sel = uiApp.ActiveUIDocument.Selection;

            //please select an element

         //   sel.StatusbarTip = "Please select an element";
            sel.PickPoint("Please select an element");
         //   sel.PickOne();
            Element elemPick = null;

            foreach (Element elem in sel.Elements)
            {
                elemPick = elem;
                break;
            }

            string strParamInfo = null;
            foreach (Parameter param in elemPick.Parameters)
            {
                if(param.AsValueString()!=null)
                    strParamInfo += param.Definition.Name + "value is :" + param.AsValueString() + "\n";
                else
                    strParamInfo += param.Definition.Name + "value is :" + param.AsString() + "\n";
            }
            MessageBox.Show(strParamInfo);
            return Autodesk.Revit.UI.Result.Succeeded;
        }
    }
}

例如，在revit中选取一面墙，就会得到以下信息：