c# cad 二次开发类库 netload 图层操作、创建图层、删除图层、设置当前图层等

c# cad 二次开发类库 netload 图层操作、创建图层、删除图层、设置当前图层等
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Colors;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _10图层操作
{
//添加图层的返回状态
public enum AddLayerStatuts
{
AddLayerOK,
IllegalLayerName,
LayerNameExist
}
//添加图层的返回值
public struct AddLayerResult
{
public AddLayerStatuts statuts;
public string layerName;
}
//修改图层属性的返回状态
public enum ChangeLayerPropertyStatus
{
ChangeOK,
LayerIsNotExist

}
public static partial class LayerTool
{/// <summary>/// 添加图层/// </summary>/// <param name="db">图形数据库</param>/// <param name="layerName">图层名</param>/// <returns>AddLayerResult</returns>public static AddLayerResult AddLayer(this Database db, string layerName){//声明AddLayerResult类型的数据，用户返回AddLayerResult res = new AddLayerResult() ;try{SymbolUtilityServices.ValidateSymbolName(layerName, false);}catch (Exception){res.statuts = AddLayerStatuts.IllegalLayerName;return res;}using (Transaction trans = db.TransactionManager.StartTransaction()){//打开层表LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);//新建层表记录if (!lt.Has(layerName)){LayerTableRecord ltr = new LayerTableRecord();//判断要创建的图层名是否已经存在,不存在则创建ltr.Name = layerName;//升级层表打开权限lt.UpgradeOpen();lt.Add(ltr);//降低层表打开权限lt.DowngradeOpen();trans.AddNewlyCreatedDBObject(ltr, true);trans.Commit();res.statuts = AddLayerStatuts.AddLayerOK;res.layerName = layerName;}else{res.statuts = AddLayerStatuts.LayerNameExist;} }return res;}/// <summary>/// 修改图层颜色/// </summary>/// <param name="db">图形数据库</param>/// <param name="LayerName">图层名</param>/// <param name="colorIndex">图层颜色</param>/// <returns>ChangeLayerPropertyStatus</returns>public static ChangeLayerPropertyStatus ChangeLayerColor(this Database db, string LayerName, short colorIndex){ChangeLayerPropertyStatus status;using (Transaction trans = db.TransactionManager.StartTransaction()){//打开层表LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);//判断指定的图形名是否存在if (lt.Has(LayerName)){LayerTableRecord ltr = (LayerTableRecord)lt[LayerName].GetObject(OpenMode.ForWrite);ltr.Color = Color.FromColorIndex(ColorMethod.ByAci, colorIndex);trans.Commit();status = ChangeLayerPropertyStatus.ChangeOK;}else{status = ChangeLayerPropertyStatus.LayerIsNotExist;}}return status;}/// <summary>/// 锁定图层/// </summary>/// <param name="db">图形数据库</param>/// <param name="LayerName">图层名</param>/// <returns>bool</returns>public static bool LockLayer(this Database db, string LayerName){bool isOk = true;using (Transaction trans = db.TransactionManager.StartTransaction()){//打开层表LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);//判断指定的图形名是否存在if (lt.Has(LayerName)){LayerTableRecord ltr = (LayerTableRecord)lt[LayerName].GetObject(OpenMode.ForWrite);ltr.IsLocked = true;trans.Commit();}else{isOk = false;}}return isOk;}/// <summary>/// 解除锁定图层/// </summary>/// <param name="db">图形数据库</param>/// <param name="LayerName">图层名</param>/// <returns>bool</returns>public static bool UnLockLayer(this Database db, string LayerName){bool isOk = true;using (Transaction trans = db.TransactionManager.StartTransaction()){//打开层表LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);//判断指定的图形名是否存在if (lt.Has(LayerName)){LayerTableRecord ltr = (LayerTableRecord)lt[LayerName].GetObject(OpenMode.ForWrite);ltr.IsLocked = false;trans.Commit();}else{isOk = false;}}return isOk;}/// <summary>/// 修改图层的线宽/// </summary>/// <param name="db">图形数据库</param>/// <param name="LayerName">图层名</param>/// <param name="lineWeight">线宽</param>/// <returns>bool</returns>public static bool ChangleLineWeight(this Database db, string LayerName, LineWeight lineWeight){bool isOk = true;using (Transaction trans = db.TransactionManager.StartTransaction()){//打开层表LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);//判断指定的图形名是否存在if (lt.Has(LayerName)){LayerTableRecord ltr = (LayerTableRecord)lt[LayerName].GetObject(OpenMode.ForWrite);ltr.LineWeight = lineWeight;trans.Commit();}else{isOk = false;}}return isOk;}/// <summary>/// 设置当前图层/// </summary>/// <param name="db">图形数据库</param>/// <param name="LayerName">图层名</param>/// <returns>bool</returns>public static bool SetCurrentLayer(this Database db, string LayerName){bool isSetOk = false;using (Transaction trans = db.TransactionManager.StartTransaction()){//打开层表LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);//判断要设置的图层名是否存在if (lt.Has(LayerName)){//获取指定图层名的ObjectIdObjectId layerId = lt[LayerName];//判断要设置的图形是否已是当前图层if (db.Clayer != layerId){db.Clayer = layerId; }isSetOk = true;}trans.Commit();}return isSetOk;}/// <summary>/// 返回所有层表记录/// </summary>/// <param name="db">图形数据库</param>/// <returns>List<LayerTableRecord></returns>public static List<LayerTableRecord> GetAllLayers(this Database db){List<LayerTableRecord> layerList = new List<LayerTableRecord>();using (Transaction trans = db.TransactionManager.StartTransaction()){//打开层表LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);lt.GenerateUsageData();foreach (ObjectId item in lt){LayerTableRecord ltr = (LayerTableRecord)item.GetObject(OpenMode.ForRead);layerList.Add(ltr);}}return layerList;}/// <summary>/// 获取所有图层名/// </summary>/// <param name="db">图形数据库</param>/// <returns>List<string></returns>public static List<string> GetAllLayersName(this Database db){List<string> layerNamesList = new List<string>();using (Transaction trans = db.TransactionManager.StartTransaction()){//打开层表LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);foreach (ObjectId item in lt){LayerTableRecord ltr = (LayerTableRecord)item.GetObject(OpenMode.ForRead);layerNamesList.Add(ltr.Name);}}return layerNamesList;}/// <summary>/// 删除图形/// </summary>/// <param name="db">图形数据库</param>/// <param name="layerName">图层名</param>/// <returns>bool</returns>public static bool DeleteLayer(this Database db, string layerName){if (layerName == "0" || layerName == "Defpoints") return false;bool isDeleteOK = false;using (Transaction trans = db.TransactionManager.StartTransaction()){LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);lt.GenerateUsageData(); if (lt.Has(layerName)){LayerTableRecord ltr = (LayerTableRecord)lt[layerName].GetObject(OpenMode.ForWrite);if (!ltr.IsUsed && db.Clayer != lt[layerName]){ltr.Erase();isDeleteOK = true;}}else{isDeleteOK = true;}trans.Commit();}return isDeleteOK;}/// <summary>/// 删除所有未使用的图形/// </summary>/// <param name="db"></param>public static void DeleteNotUsedLayer(this Database db){using (Transaction trans = db.TransactionManager.StartTransaction()){LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);lt.GenerateUsageData();foreach (ObjectId item in lt){LayerTableRecord ltr = (LayerTableRecord)item.GetObject(OpenMode.ForWrite);if (!ltr.IsUsed){ltr.Erase();}}trans.Commit();}}/// <summary>/// 强行删除图形及图形上的所有实体对象/// </summary>/// <param name="db">图形数据库</param>/// <param name="layerName">图层名</param>/// <param name="delete"></param>/// <returns></returns>public static bool DeleteLayer(this Database db, string layerName,bool delete){if (layerName == "0" || layerName == "Defpoints") return false;bool isDeleteOK = false;using (Transaction trans = db.TransactionManager.StartTransaction()){LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);lt.GenerateUsageData();if (lt.Has(layerName)){LayerTableRecord ltr = (LayerTableRecord)lt[layerName].GetObject(OpenMode.ForWrite);if (delete){if (ltr.IsUsed){ltr.deleteAllEntityInLayer();  }if (db.Clayer == ltr.ObjectId){db.Clayer = lt["0"];}ltr.Erase();isDeleteOK = true;}else{if (!ltr.IsUsed && db.Clayer != lt[layerName]){ltr.Erase();isDeleteOK = true;}}   }else{isDeleteOK = true;}trans.Commit();}return isDeleteOK;}/// <summary>/// 删除指定图形上的所有实体对象/// </summary>/// <param name="ltr"></param>public static void deleteAllEntityInLayer(this LayerTableRecord ltr){Database db = HostApplicationServices.WorkingDatabase;Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;TypedValue[] value = new TypedValue[]{new TypedValue((int)DxfCode.LayerName,ltr.Name)};SelectionFilter filter = new SelectionFilter(value);PromptSelectionResult psr = ed.SelectAll();if (psr.Status == PromptStatus.OK){ObjectId[] ids = psr.Value.GetObjectIds();using(Transaction trans = db.TransactionManager.StartTransaction()){for (int i = 0; i < ids.Length; i++){Entity ent = (Entity)ids[i].GetObject(OpenMode.ForWrite);ent.Erase();}trans.Commit();}}}
}

}

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c# cad 二次开发类库 netload 图层操作、创建图层、删除图层、设置当前图层等

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