使用.NET获取一个图层上的所有实体

ObjectArx

[C#] 纯文本查看 复制代码

using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;

namespace EntitySelection
{
  public class Commands
  {
    [CommandMethod("EOL")]
    static public void EntitiesOnLayer()
    {
      Document doc =
        Application.DocumentManager.MdiActiveDocument;
      Editor ed = doc.Editor;

      PromptResult pr =
        ed.GetString("\nEnter name of layer: ");
      if (pr.Status == PromptStatus.OK)
      {
        ObjectIdCollection ents =
          GetEntitiesOnLayer(pr.StringResult);
        ed.WriteMessage(
          "\nFound {0} entit{1} on layer {2}",
          ents.Count,
          (ents.Count == 1 ? "y" : "ies"),
          pr.StringResult
        );
      }
    }

    private static ObjectIdCollection
      GetEntitiesOnLayer(string layerName)
    {
      Document doc =
        Application.DocumentManager.MdiActiveDocument;
      Editor ed = doc.Editor;

      // Build a filter list so that only entities
      // on the specified layer are selected

      TypedValue[] tvs =
        new TypedValue[1] {
            new TypedValue(
              (int)DxfCode.LayerName,
              layerName
            )
          };
      SelectionFilter sf =
        new SelectionFilter(tvs);
      PromptSelectionResult psr =
        ed.SelectAll(sf);

      if (psr.Status == PromptStatus.OK)
        return
          new ObjectIdCollection(
            psr.Value.GetObjectIds()
          );
      else
        return new ObjectIdCollection();
    }
  }
}

另外一个

[C#] 纯文本查看 复制代码

// 访问AutoCAD程序对象。
using Autodesk.AutoCAD.ApplicationServices;

// 访问 the AutoCAD 编辑器。
using Autodesk.AutoCAD.EditorInput;

// 命令注册。
using Autodesk.AutoCAD.Runtime;

// 访问数据库对象。
using Autodesk.AutoCAD.DatabaseServices;

namespace EntitySelection
{
    public class Commands
    {
        [CommandMethod("SelectOnlayer")]
        static public void SelectEnt()
        {
            Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
            PromptResult pr =
             ed.GetString("\n请输入图层名称: ");
            if (pr.Status == PromptStatus.OK)
            {
                TypedValue[] filList = new TypedValue[1];
                filList[0] = new TypedValue((int)DxfCode.LayerName, pr.StringResult);
                SelectionFilter filter = new SelectionFilter(filList);
                PromptSelectionResult ssRes = ed.SelectAll(filter);
                if (ssRes.Status == PromptStatus.OK)
                {
                    SelectionSet SS = ssRes.Value;
                    int nCount = SS.Count;
                    ed.WriteMessage("在{0}层上找到{1}个实体", pr.StringResult, nCount);
                }
            }
        }
    }
}

zjh2785

好东西，学习了

wfch20000

haole ,zenme wode ping dazi yongbule