yang686526

求助：加入实体出现einvalidinput 错误，附代码，请高手看看
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求助：加入实体出现einvalidinput 错误，附代码，请高手看看
,
, openmode.forread);
//遍历对象，加入到动态数组中
foreach (objectid id in btr_source)
{
entity ent = (entity)t_source.getobject(id, openmode.forread);
ents.add(ent);
}
}
using (transaction trans = doc.transactionmanager.starttransaction())
{
//打开块表
blocktable bt = (blocktable)trans.getobject(doc.database.blocktableid, openmode.forread);
//打开当前文档的模型空间
blocktablerecord btr = (blocktablerecord)trans.getobject(bt[blocktablerecord.modelspace], openmode.forwrite);
//在当前模型空间加入实体
for (int i = 0; i < ents.count; i++)
{
objectid id = btr.appendentity((entity)ents);
trans.addnewlycreateddbobject((entity)ents, true);
}
trans.commit();
}
}
}
}
catch (exception ex)
{
ed.writemessage("\nerror during insertblockrefwithattfromdwgfile: " + ex.message);
}
}
einvalidinput 错误已解决，参照论坛上一位网友的 方法：
entity e = (entity)ents[i];
entity ee =e.clone();
objectid id = btr.appendentity(ee);
可以执行成功，模型空间也加入了实体，但是接着出现内部错误：epermanentlyerased,请知道的朋友指点一下。
修改后的代码如下：
private void copyfromotherdwg(string filename)
{
acadappser.document doc = acadappser.application.documentmanager.mdiactivedocument;
editor ed = doc.editor;
try
{
if (!file.exists(filename))
{
//filename = hostapplicationservices.current.findfile(filename, doc.database, findfilehint.default);
ed.writemessage("\n 不存在文件:" + filename + "\n");
return;
}
using (acadappser.documentlock doclock = doc.lockdocument()) //多文档要先这样，否则报至命错误，原因还是不太明白。
{
using (database db_source = new database(false, true)) //从文件读取时第一个为false ,第二个表 不关联到当前文档，
{
//读dwg文件
db_source.readdwgfile(filename, fileshare.read, true, null);
//为了让插入块的函数在多个图形文件打开的情况下起作用，你必须使用下面的函数把dwg文件关闭
db_source.closeinput(true);
entity[] ents = new entity[1];
using (transaction t_source = db_source.transactionmanager.starttransaction())
{
//打开源数据库的块表
blocktable bt_source = (blocktable)t_source.getobject(db_source.blocktableid, openmode.forread);
//打开模型空间块表记录
blocktablerecord btr_source = (blocktablerecord)t_source.getobject(bt_source[blocktablerecord.modelspace], openmode.forread);
//遍历对象，加入到动态数组中
int n = 0;
foreach (objectid id in btr_source)
{
n++;
}
//改变数组的长度
array.resize<entity>(ref ents, n);
n = 0;
foreach (objectid id in btr_source)
{
ents[n++] = (entity)t_source.getobject(id, openmode.forread);
}
}
using (transaction trans = doc.transactionmanager.starttransaction())
{
//打开块表
blocktable bt = (blocktable)trans.getobject(doc.database.blocktableid, openmode.forread);
//打开当前文档的模型空间
blocktablerecord btr = (blocktablerecord)trans.getobject(bt[blocktablerecord.modelspace], openmode.forwrite);
//在当前模型空间加入实体
for (int i = 0; i < ents.length; i++)
{
entity e = (entity)ents[i].clone();
objectid id = btr.appendentity(e);
trans.addnewlycreateddbobject(e, true);
}
trans.commit();
btr.dispose();
}
}
}
}
catch (exception ex)
{
ed.writemessage("\nerror during insertblockrefwithattfromdwgfile: " + ex.message);
}
}
下面的两个方法，首先调用getentsfromfile，得到外部文件的实体
再调用appendentitytomodelspace，将实体加入当前文档模型空间
出现错误：enotopenforwrite
我的代码读写模式就是forwrite，不知道为什么，请知道的人告诉我一下，谢谢！
我用的是vs ents)
{
acadappser.document doc = acadappser.application.documentmanager.mdiactivedocument;
editor ed = doc.editor;
try
{
if (!file.exists(filename))
{
//filename = hostapplicationservices.current.findfile(filename, doc.database, findfilehint.default);
ed.writemessage("\n 不存在文件:" + filename + "\n");
return;
}
using (acadappser.documentlock doclock = doc.lockdocument()) //多文档要先这样，否则报至命错误，原因还是不太明白。
{
using (database db_source = new database(false, true)) //从文件读取时第一个为false ,第二个表 不关联到当前文档，
{
//读dwg文件
db_source.readdwgfile(filename, fileshare.read, true, null);
//为了让插入块的函数在多个图形文件打开的情况下起作用，你必须使用下面的函数把dwg文件关闭
db_source.closeinput(true);

using (transaction t_source = db_source.transactionmanager.starttransaction())
{
//打开源数据库的块表
blocktable bt_source = (blocktable)t_source.getobject(db_source.blocktableid, openmode.forread);
//打开模型空间块表记录
blocktablerecord btr_source = (blocktablerecord)t_source.getobject(bt_source[blocktablerecord.modelspace], openmode.forread);
//遍历对象，加入到动态数组中
int n = 0;
foreach (objectid id in btr_source)
{
n++;
}
//改变数组的长度
array.resize<entity>(ref ents, n);
n = 0;
foreach (objectid id in btr_source)
{
ents[n++] = (entity)t_source.getobject(id, openmode.forread);
}
}
}
}
}
catch (exception ex)
{
ed.writemessage("\nerror during getents: " + ex.message);
}
}
//将实体加入当前模型空间
public static objectid appendentitytomodelspace(entity ent)
{
objectid entid = objectid.null;
acadappser.document doc = acadappser.application.documentmanager.mdiactivedocument;
editor ed = doc.editor;
try
{
database db = hostapplicationservices.workingdatabase;
using (acadappser.documentlock doclock = doc.lockdocument()) //多文档要先这样，否则报至命错误，原因还是不太明白。
{
using (transaction trans = db.transactionmanager.starttransaction())
{
blocktable bt = (blocktable)trans.getobject(db.blocktableid, openmode.forwrite);
blocktablerecord btr = (blocktablerecord)trans.getobject(bt[blocktablerecord.modelspace], openmode.forwrite);
entid = btr.appendentity(ent);
trans.addnewlycreateddbobject(ent, true);
trans.commit();
}
}
}
catch (exception ex)
{
ed.writemessage("\nerror during appendentity: " + ex.message);
}
return entid;
}
你的 t_source 没有提交事务处理，加上t_source.commit()试试看
谢谢楼上，我加上了，还是出错：
trans.commit();
这一句出错。
错误类型为：尝试读取或写入受保护的内存。这通常指示其他内存已损坏。
ents = new entity[1];
if (!file.exists(filename))
{
//filename = hostapplicationservices.current.findfile(filename, doc.database, findfilehint.default);
throw new exception("\n 不存在文件:" + filename + "\n");
return;
}
using (acadappser.documentlock doclock = doc.lockdocument()) //多文档要先这样，否则报至命错误，原因还是不太明白。
{
using (database db_source = new database(false, true)) //从文件读取时第一个为false ,第二个表 不关联到当前文档，
{
//读dwg文件
db_source.readdwgfile(filename, fileshare.read, true, null);
//为了让插入块的函数在多个图形文件打开的情况下起作用，你必须使用下面的函数把dwg文件关闭
db_source.closeinput(true);
using (transaction t_source = db_source.transactionmanager.starttransaction())
{
try
{
//打开源数据库的块表
blocktable bt_source = (blocktable)t_source.getobject(db_source.blocktableid, openmode.forread);
//打开模型空间块表记录
blocktablerecord btr_source = (blocktablerecord)t_source.getobject(bt_source[blocktablerecord.modelspace], openmode.forread);
//获取对象个数
int n = 0;
foreach (objectid id in btr_source)
{
n++;
}
//改变数组的长度
array.resize<entity>(ref ents, n);
n = 0;
//遍历对象，加入到动态数组中
foreach (objectid id in btr_source)
{
entity e = (entity)t_source.getobject(id, openmode.forread);
ents[n++] = (entity)e.clone();
}
bt_source.dispose();
btr_source.dispose();
t_source.commit();
}
catch (exception ex)
{
throw new system.exception("t_source错误: " + ex.message);
}
}
using (transaction trans = doc.transactionmanager.starttransaction())
{
try
{
database db = hostapplicationservices.workingdatabase;
//打开块表
blocktable bt = (blocktable)trans.getobject(db.blocktableid, openmode.forread);
//打开当前文档的模型空间
blocktablerecord btr = (blocktablerecord)trans.getobject(db.currentspaceid, openmode.forwrite);
//在当前模型空间加入实体
//line line = new line(new point3d(300, 400, 0), new point3d(80, 60, 0));
//btr.appendentity(line);
//trans.addnewlycreateddbobject(line, true);
//line line1 = new line(new point3d(600, 700, 0), new point3d(80, 60, 0));
//btr.appendentity(line1);
//trans.addnewlycreateddbobject(line1, true);
for (int i = 0; i < ents.length; i++)
{
objectid id = btr.appendentity(ents);
trans.addnewlycreateddbobject(ents, true);
}
trans.commit();
bt.dispose();
btr.dispose();
}
catch (exception ex)
{
throw new system.exception("trans错误: " + ex.message);
}
}
}
}
}
catch (exception ex)
{
throw new system.exception("copyfromotherdwg错误: " + ex.message);
}
}