是bug吗？OpenCloseTransaction 与 Transaction 在此段代码的区别？
本帖最后由 Real_King 于 2015-6-11 22:39 编辑图形数据库间复制对象，单击自己做的一个工具栏上的按钮后显示一个Form，实例化后直接show()的，
因为发现用模态对话框无法新建图形dwg.然后单击botton1,
使用
using (OpenCloseTransaction acTrans = acCurDb.TransactionManager.StartOpenCloseTransaction())
作为事务时，会报错eWasOpenForRead(如果acBlkTblRecNewDoc的OpenMode是write就报错write，
反正就是会报错)
而换做Transaction作为事务后
using (Transaction acTrans = acDbNewDoc.TransactionManager.StartTransaction())
运行无误。
自己写的代码是这样的情况，又用了.NET 开发人员手册上两图形数据库间复制圆的代码测试。
下面测试代码来自.NET 开发人员手册，画两个圆再新建个dwg复制过去.
在这儿我把两种事务的代码都列出，仅仅事务的定义不同，其它都相同。
CAD是10的版本，是bug吗？OpenCloseTransaction 与 Transaction 在此段代码的区别？
或者说，跟Form的显示方式(show、ShowModalDialog等等)有关？
OpenCloseTransaction 的效率比 Transaction 好，NET开发基础与实例第二版建议在读写实体对象
时尽量使用它，我刚刚换了CAD10做开发就兴冲冲全给用上了，结果就发现了这个问题，难道，
这会是bug吗？请各位Doctor have a look at，please！ thanks in advance
被CAD06的bug弄怕了，好不容易能用10开发，这才刚刚用了一天...泪奔
OpenCloseTransaction 事务版↓(会报错)private void button1_Click(object sender, EventArgs e)
{
ObjectIdCollection acObjIdColl = new ObjectIdCollection();
// 获得当前文档和数据库 Get the current document and database
Document acDoc = AcadApp.DocumentManager.MdiActiveDocument;
Database acCurDb = acDoc.Database;
// 锁定当前图形 Lock the current document
using (DocumentLock acLckDocCur = acDoc.LockDocument())
{
// 启动一个事务Start a transaction
using (OpenCloseTransaction acTrans = acCurDb.TransactionManager.StartOpenCloseTransaction())
{
// 以只读方式打开块表记录 Open the Block table record for read
BlockTable acBlkTbl;
acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId,
OpenMode.ForRead) as BlockTable;
// 以写方式打开模型空间块表记录 Open the Block table record Model space for write
BlockTableRecord acBlkTblRec;
acBlkTblRec = acTrans.GetObject(acBlkTbl,
OpenMode.ForWrite) as BlockTableRecord;
// 创建一个圆心为(0,0,0)，半径为 5 的圆 Create a circle that is at (0,0,0) with a radius of 5
Circle acCirc1 = new Circle();
acCirc1.SetDatabaseDefaults();
acCirc1.Center = new Point3d(0, 0, 0);
acCirc1.Radius = 5;
// 添加新对象到块表记录和事务中 Add the new object to the block table record and the transaction
acBlkTblRec.AppendEntity(acCirc1);
acTrans.AddNewlyCreatedDBObject(acCirc1, true);
// 创建一个圆心为(0,0,0)，半径为 7 的圆 Create a circle that is at (0,0,0) with a radius of 7
Circle acCirc2 = new Circle();
acCirc2.SetDatabaseDefaults();
acCirc2.Center = new Point3d(0, 0, 0);
acCirc2.Radius = 7;
// 添加新对象到块表记录和事务中 Add the new object to the block table record and the transaction
acBlkTblRec.AppendEntity(acCirc2);
acTrans.AddNewlyCreatedDBObject(acCirc2, true);
// 添加所有要复制的对象到新的文档中 Add all the objects to copy to the new document
acObjIdColl = new ObjectIdCollection();
acObjIdColl.Add(acCirc1.ObjectId);
acObjIdColl.Add(acCirc2.ObjectId);
// 保存新对象到数据库中 Save the new objects to the database
acTrans.Commit();
}
// 解锁文档 Unlock the document
}
// 修改文件和路径以匹配你工作站中的图形模板 Change the file and path to match a drawing template on your workstation
string sLocalRoot = AcadApp.GetSystemVariable("LOCALROOTPREFIX") as string;
string sTemplatePath = sLocalRoot + "Template\\acad.dwt";
// 创建新的图形用于复制对象 Create a new drawing to copy the objects to
DocumentCollection acDocMgr = AcadApp.DocumentManager;
Document acNewDoc = acDocMgr.Add(sTemplatePath);
Database acDbNewDoc = acNewDoc.Database;
// 锁定新文档 Lock the new document
using (DocumentLock acLckDoc = acNewDoc.LockDocument())
{
// 在新数据库中启动事务 Start a transaction in the new database
using (OpenCloseTransaction acTrans = acDbNewDoc.TransactionManager.StartOpenCloseTransaction())
{
// 以只读方式打开块表 Open the Block table for read
BlockTable acBlkTblNewDoc;
acBlkTblNewDoc = acTrans.GetObject(acDbNewDoc.BlockTableId,
OpenMode.ForRead) as BlockTable;
// 以只读方式打开模型空间的块表记录 Open the Block table record Model space for read
BlockTableRecord acBlkTblRecNewDoc;
acBlkTblRecNewDoc = acTrans.GetObject(acBlkTblNewDoc,
OpenMode.ForRead) as BlockTableRecord;
// 复制对象到新的数据库中 Clone the objects to the new database
IdMapping acIdMap = new IdMapping();
acCurDb.WblockCloneObjects(acObjIdColl, acBlkTblRecNewDoc.ObjectId, acIdMap,
DuplicateRecordCloning.Ignore, false);
// 保存复制的对象到数据库中 Save the copied objects to the database
acTrans.Commit();
}
// 解锁文档 Unlock the document
}
// 设置新文档为当前文档 Set the new document current
acDocMgr.MdiActiveDocument = acNewDoc;
} Transaction 事务版↓private void button1_Click(object sender, EventArgs e)
{
ObjectIdCollection acObjIdColl = new ObjectIdCollection();
// 获得当前文档和数据库 Get the current document and database
Document acDoc = AcadApp.DocumentManager.MdiActiveDocument;
Database acCurDb = acDoc.Database;
// 锁定当前图形 Lock the current document
using (DocumentLock acLckDocCur = acDoc.LockDocument())
{
// 启动一个事务Start a transaction
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
// 以只读方式打开块表记录 Open the Block table record for read
BlockTable acBlkTbl;
acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId,
OpenMode.ForRead) as BlockTable;
// 以写方式打开模型空间块表记录 Open the Block table record Model space for write
BlockTableRecord acBlkTblRec;
acBlkTblRec = acTrans.GetObject(acBlkTbl,
OpenMode.ForWrite) as BlockTableRecord;
// 创建一个圆心为(0,0,0)，半径为 5 的圆 Create a circle that is at (0,0,0) with a radius of 5
Circle acCirc1 = new Circle();
acCirc1.SetDatabaseDefaults();
acCirc1.Center = new Point3d(0, 0, 0);
acCirc1.Radius = 5;
// 添加新对象到块表记录和事务中 Add the new object to the block table record and the transaction
acBlkTblRec.AppendEntity(acCirc1);
acTrans.AddNewlyCreatedDBObject(acCirc1, true);
// 创建一个圆心为(0,0,0)，半径为 7 的圆 Create a circle that is at (0,0,0) with a radius of 7
Circle acCirc2 = new Circle();
acCirc2.SetDatabaseDefaults();
acCirc2.Center = new Point3d(0, 0, 0);
acCirc2.Radius = 7;
// 添加新对象到块表记录和事务中 Add the new object to the block table record and the transaction
acBlkTblRec.AppendEntity(acCirc2);
acTrans.AddNewlyCreatedDBObject(acCirc2, true);
// 添加所有要复制的对象到新的文档中 Add all the objects to copy to the new document
acObjIdColl = new ObjectIdCollection();
acObjIdColl.Add(acCirc1.ObjectId);
acObjIdColl.Add(acCirc2.ObjectId);
// 保存新对象到数据库中 Save the new objects to the database
acTrans.Commit();
}
// 解锁文档 Unlock the document
}
// 修改文件和路径以匹配你工作站中的图形模板 Change the file and path to match a drawing template on your workstation
string sLocalRoot = AcadApp.GetSystemVariable("LOCALROOTPREFIX") as string;
string sTemplatePath = sLocalRoot + "Template\\acad.dwt";
// 创建新的图形用于复制对象 Create a new drawing to copy the objects to
DocumentCollection acDocMgr = AcadApp.DocumentManager;
Document acNewDoc = acDocMgr.Add(sTemplatePath);
Database acDbNewDoc = acNewDoc.Database;
// 锁定新文档 Lock the new document
using (DocumentLock acLckDoc = acNewDoc.LockDocument())
{
// 在新数据库中启动事务 Start a transaction in the new database
using (Transaction acTrans = acDbNewDoc.TransactionManager.StartTransaction())
{
// 以只读方式打开块表 Open the Block table for read
BlockTable acBlkTblNewDoc;
acBlkTblNewDoc = acTrans.GetObject(acDbNewDoc.BlockTableId,
OpenMode.ForRead) as BlockTable;
// 以只读方式打开模型空间的块表记录 Open the Block table record Model space for read
BlockTableRecord acBlkTblRecNewDoc;
acBlkTblRecNewDoc = acTrans.GetObject(acBlkTblNewDoc,
OpenMode.ForRead) as BlockTableRecord;
// 复制对象到新的数据库中 Clone the objects to the new database
IdMapping acIdMap = new IdMapping();
acCurDb.WblockCloneObjects(acObjIdColl, acBlkTblRecNewDoc.ObjectId, acIdMap,
DuplicateRecordCloning.Ignore, false);
// 保存复制的对象到数据库中 Save the copied objects to the database
acTrans.Commit();
}
// 解锁文档 Unlock the document
}
// 设置新文档为当前文档 Set the new document current
acDocMgr.MdiActiveDocument = acNewDoc;
} Openclosetr应该是有局限的吧 本帖最后由 Real_King 于 2015-6-12 10:01 编辑
雪山飞狐_lzh 发表于 2015-6-12 09:33 static/image/common/back.gif
Openclosetr应该是有局限的吧
而且发现，用openclosetr打断的实体，做选择集时结果有误，这下把我弄怕了，算了，还是全部用tr好了...老老实实的不折腾。
目前也没找到资料具体确定openclosetr的局限性体现在哪些方面，真不敢随便用。不过我觉得openclosetr处理时，实体的状态不是简单的write或read...实体objectid会发生意想不到的情况。thanks brother flyingfox
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