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Get DBObject information from Handle

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Message 1 of 13
tommy.yang
609 Views, 12 Replies
‎02-16-2007 07:17 PM
‎02-16-2007 07:17 PM

Get DBObject information from Handle

Hi,
I used AutoLISP for years, I knew a function 'handent' which can get id of entity from it's handle, I want to know what is the same method to achieve this function
Great appreciation for your reply, thanks in advance.
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12 REPLIES 12
Message 2 of 13
Anonymous
in reply to: tommy.yang
‎02-17-2007 07:58 AM
‎02-17-2007 07:58 AM

Type 'handle' in the object browser. If your just getting started this is
a invaluable resource.

wrote in message news:5490370@discussion.autodesk.com...
Hi,
I used AutoLISP for years, I knew a function 'handent' which can get id of
entity from it's handle, I want to know what is the same method to achieve
this function
Great appreciation for your reply, thanks in advance.
Report
0 Likes
Reply
Message 3 of 13
tommy.yang
in reply to: tommy.yang
‎02-17-2007 09:30 AM
‎02-17-2007 09:30 AM

Thanks for your reply.
Perhaps I did not describe my problem clearly, what I meant was: when I got a handle value of an entity, I must find it's object information using this handle value, but I cannot find a way in C# for .net.
In the software I had developed using the language of AutoLISP, it used xdata of entity to save handle of other entity in order to build relation between two entities, because Autodesk said the handle of entity could maintain the unique value after dwging' reopen, so, if I use C# instead, I must get a way which can get information of object with the given handle.
Please give me further help, thank you very much, and I feel so regret for my poor english too. Message was edited by: tommy.yang
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Message 4 of 13
Anonymous
in reply to: tommy.yang
‎02-17-2007 10:57 AM
‎02-17-2007 10:57 AM

db.GetObjectID(...)
wrote in message news:5490610@discussion.autodesk.com...
Thanks for your reply.
Perhaps I did not describe my problem clearly, what I meant was: when I got
a handle value of an entity, I must find it's object information using this
handle value, but I cannot find a way in C# for .net.
In the software I had developed using the language of AutoLISP, it used
xdata of entity to save handle of other entity in order to build relation
between two entities, because Autodesk said the handle of entity could
maintain the unique value after dwging' reopen, so, if I use C# instead, I
must get a way which can get information of object with the given handle.
Please give me further help, thank you very much, and I feel so regret for
my poor english too.

Message was edited by: tommy.yang
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Message 5 of 13
Anonymous
in reply to: tommy.yang
‎02-17-2007 12:00 PM
‎02-17-2007 12:00 PM


Have a look at

 


size=2>Database.GetObjectId Method 

 

It's not so easy to find in the browser
:-)

 

/// kwb

 

 

Thanks for your reply.
Perhaps
I did not describe my problem clearly, what I meant was: when I got a handle
value of an entity, I must find it's object information using this handle value,
but I cannot find a way in C# for .net.
In the software I had developed
using the language of  AutoLISP, it  used xdata of entity to save
handle of other entity in order to build relation between two entities, because
Autodesk said the handle of entity could maintain the unique value after dwging'
reopen,  so, if I use C# instead, I must get a way which can get
information of object with the given handle.
Please give me further help,
thank you very much, and I feel so regret for my poor english
too.

Message was edited by: tommy.yang
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Message 6 of 13
Anonymous
in reply to: tommy.yang
‎02-17-2007 12:12 PM
‎02-17-2007 12:12 PM


Looks like I should refresh my newsreader before
answering 🙂

 


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">


Have a look at

 


size=2>Database.GetObjectId Method 

 

It's not so easy to find in the browser
🙂

 

/// kwb

 

 

Thanks for your
reply.
Perhaps I did not describe my problem clearly, what I meant was:
when I got a handle value of an entity, I must find it's object information
using this handle value, but I cannot find a way in C# for .net.
In the
software I had developed using the language of  AutoLISP, it  used
xdata of entity to save handle of other entity in order to build relation
between two entities, because Autodesk said the handle of entity could
maintain the unique value after dwging' reopen,  so, if I use C# instead,
I must get a way which can get information of object with the given
handle.
Please give me further help, thank you very much, and I feel so
regret for my poor english too.

Message was edited by:
tommy.yang
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Message 7 of 13
Anonymous
in reply to: tommy.yang
‎02-17-2007 01:06 PM
‎02-17-2007 01:06 PM


🙂


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">


Looks like I should refresh my newsreader before
answering 🙂

 


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">


Have a look at

 


size=2>Database.GetObjectId Method 

 

It's not so easy to find in the browser
🙂

 

/// kwb

 

 

Thanks for your
reply.
Perhaps I did not describe my problem clearly, what I meant was:
when I got a handle value of an entity, I must find it's object information
using this handle value, but I cannot find a way in C# for .net.
In the
software I had developed using the language of  AutoLISP, it  used
xdata of entity to save handle of other entity in order to build relation
between two entities, because Autodesk said the handle of entity could
maintain the unique value after dwging' reopen,  so, if I use C#
instead, I must get a way which can get information of object with the given
handle.
Please give me further help, thank you very much, and I feel so
regret for my poor english too.

Message was edited by:
tommy.yang
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Message 8 of 13
Anonymous
in reply to: tommy.yang
‎02-17-2007 08:01 PM
‎02-17-2007 08:01 PM

Hi Paul. It might be less confusing for a
new learner if you used class names rather
than the names of variables you commonly
use, as per Kerry's response.

--
http://www.caddzone.com

AcadXTabs: MDI Document Tabs for AutoCAD 2004/2005/2006/2007
http://www.acadxtabs.com

"Paul Richardson" wrote in message news:5490627@discussion.autodesk.com...
db.GetObjectID(...)
wrote in message news:5490610@discussion.autodesk.com...
Thanks for your reply.
Perhaps I did not describe my problem clearly, what I meant was: when I got
a handle value of an entity, I must find it's object information using this
handle value, but I cannot find a way in C# for .net.
In the software I had developed using the language of AutoLISP, it used
xdata of entity to save handle of other entity in order to build relation
between two entities, because Autodesk said the handle of entity could
maintain the unique value after dwging' reopen, so, if I use C# instead, I
must get a way which can get information of object with the given handle.
Please give me further help, thank you very much, and I feel so regret for
my poor english too.

Message was edited by: tommy.yang
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Message 9 of 13
tommy.yang
in reply to: tommy.yang
‎02-17-2007 09:11 PM
‎02-17-2007 09:11 PM

Let me express my great appreciation for your help, I do it successfully with db.GetObject method, thank you very much
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Message 10 of 13
Anonymous
in reply to: tommy.yang
‎02-18-2007 05:47 AM
‎02-18-2007 05:47 AM

Agreed! Good point 🙂
"Tony Tanzillo" wrote in message
news:5490785@discussion.autodesk.com...
Hi Paul. It might be less confusing for a
new learner if you used class names rather
than the names of variables you commonly
use, as per Kerry's response.

--
http://www.caddzone.com

AcadXTabs: MDI Document Tabs for AutoCAD 2004/2005/2006/2007
http://www.acadxtabs.com

"Paul Richardson" wrote in message
news:5490627@discussion.autodesk.com...
db.GetObjectID(...)
wrote in message news:5490610@discussion.autodesk.com...
Thanks for your reply.
Perhaps I did not describe my problem clearly, what I meant was: when I got
a handle value of an entity, I must find it's object information using this
handle value, but I cannot find a way in C# for .net.
In the software I had developed using the language of AutoLISP, it used
xdata of entity to save handle of other entity in order to build relation
between two entities, because Autodesk said the handle of entity could
maintain the unique value after dwging' reopen, so, if I use C# instead, I
must get a way which can get information of object with the given handle.
Please give me further help, thank you very much, and I feel so regret for
my poor english too.

Message was edited by: tommy.yang
Report
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Message 11 of 13
Anonymous
in reply to: tommy.yang
‎02-18-2007 06:07 AM
‎02-18-2007 06:07 AM


>It's not so easy to find in the
browser

You're right! I spend way to much time reading the
object browser so I start

to think stuff is easy to find!


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">


Have a look at

 


size=2>Database.GetObjectId Method 

 

It's not so easy to find in the browser
🙂

 

/// kwb

 

 

Thanks for your
reply.
Perhaps I did not describe my problem clearly, what I meant was:
when I got a handle value of an entity, I must find it's object information
using this handle value, but I cannot find a way in C# for .net.
In the
software I had developed using the language of  AutoLISP, it  used
xdata of entity to save handle of other entity in order to build relation
between two entities, because Autodesk said the handle of entity could
maintain the unique value after dwging' reopen,  so, if I use C# instead,
I must get a way which can get information of object with the given
handle.
Please give me further help, thank you very much, and I feel so
regret for my poor english too.

Message was edited by:
tommy.yang
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Message 12 of 13
aslam
in reply to: tommy.yang
‎02-19-2007 01:46 AM
‎02-19-2007 01:46 AM

Hi guys,
I m facing the problem in this. When i directly call a method which retrieve the Object id from database then it workds well but when i try to do the same in THREAD, then it thorw NullReferenceException. Here is the Method which i m using

void StoreSomething(string handleString)
{

ObjectId objectId = Application.DocumentManager.MdiActiveDocument.Database.GetObjectId(false, GetHandle(handleString), 1);
}

GetHandle(string handle)
{
return new Autodesk.AutoCAD.DatabaseServices.Handle(Int64.Parse(hexstr, System.Globalization.NumberStyles.HexNumber));
}

Here when i call StoreSomethig() directly then it works fine but when i call this in a multithreading then i gives exceptions.

Thanks...
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Message 13 of 13
Anonymous
in reply to: tommy.yang
‎02-19-2007 09:22 AM
‎02-19-2007 09:22 AM

just published :

http://through-the-interface.typepad.com/through_the_interface/2007/02/getting_access_.html


wrote in message news:5490370@discussion.autodesk.com...
Hi,
I used AutoLISP for years, I knew a function 'handent' which can get id of
entity from it's handle, I want to know what is the same method to achieve
this function
Great appreciation for your reply, thanks in advance.
Report
0 Likes
Reply
Reply

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