How to save *.DWG format to *.DXF format

[Anonymous]

Hi, I am new to AutoCAD Customization (using C#). I am trying to save a *.DWG file to *.DXF format. The DXF file is created, but when i tried to open the same DXF file in AutoCAD,it is showing as "not a Valid DXF file".

Code :

// Open *.DWG file

Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.Open("..\..\abc.dwg",true);

// Save to *.DXF format

Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Database.Saveas("..\..\def.dxf",Autodesk.AutoCAD.DatabaseServices.DwgVersion.Current);

// Close and discard changes,if any

Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.CloseAndDiscard();

ONE MORE THING... When i used the saveas command in Autocad, it is showing different dxf file formats(AutoCAD 2010 DXF,AutoCAD 2007 /LT 2007 DXF etc..). How to save in particular DXF format. If possible give me a sample C# code for this.

Thanks in Advance,

Venkata Ramesh V

[wayne.brill · Accepted solution]

Hi,

Try using  the DxfOut function of the database. Here is a C# example that saves a DXF to an older format.

CommandMethod("dxfout12")]
static public void My_dxfout12()
{
Database db = Application.DocumentManager.MdiActiveDocument.Database;
int precision = 16;
db.DxfOut("r12.dxf", precision, DwgVersion.AC1009);

}

You can set the drawing version using the Autodesk.AutoCAD.DatabaseServices.DwgVersion.  

Also for AutoCAD .NET questions I would suggest posting in the .NET  discussion group.

Cheers,

Wayne Brill

Autodesk Developer Network

[Anonymous · Accepted solution]

Hi Wanye,

   Its working, i tried the same DXFout fucntion last night, but had a doubt that time regarding the Version. I thought like the DWGVersion means the Version of the file that we are going to Save. Anyways things are clear now.Finally 2 small things to clarify

1. I checked the ObjectARX for AutoCAD 2011 for "DwgVersion Enumeration" where in i found something like AC1001 = 8, AC1002 = 9..etc but i couldn't make any sense which one belongs to which version(like AC1001 for 2010,AC1002 for 2007 etc..) So where can i get this help.

2. While i'm searching for this DXFOut function i came across "GetSupportedDXFOutVersions()" , it is returning

AC1800,AC1015,AC1012(i'm using AutoCAD 2011). I thought that i can save my DWG file to DXF in only mentioned three formats(Versions). but i'm able to use all the Versions while saving to DXF,instead of only above mentioned three versions.

i.e i can use

Autodesk.AutoCAD.DatabaseServices.DWGVersion.AC1024 (even though GetSupportedDXFOutVersions() didnt returned the value AC1024).

If possible please clarify/Brief me on this.

Thanks for the DIscussion_Admin(Group/Member) for moving my post to right place and Thanks for your advice wyane.From now i will post these type of things in .NET forum.

Venkata Ramesh V

[kdub_nz]

>>> If possible please clarify

http://en.wikipedia.org/wiki/.dwg

Regards

[Anonymous]

Thanks Kerry for the link. I checked the link, found some helpfull stuff there. I found almost all the enum's, but i couldn't found

AC1800 which my GetSupportedSaveVersions() returned when i called it in AutoCAD-2011 environment. Any idea on this enum.

Thanks for the help.

Venkata Ramesh V

[kdub_nz · Accepted solution]

The enumerators are

[Wrapper("AcDb::AcDbDwgVersion ")]
public enum DwgVersion
{
    AC1001 = 8,
    AC1002 = 9,
    AC1003 = 10,
    AC1004 = 11,
    AC1005 = 12,
    AC1006 = 13,
    AC1007 = 14,
    AC1008 = 15,
    AC1009 = 0x10,
    AC1010 = 0x11,
    AC1011 = 0x12,
    AC1012 = 0x13,
    AC1013 = 20,
    AC1014 = 0x15,
    AC1015 = 0x17,
    AC1021 = 0x1b,
    AC1024 = 0x1d,
    AC1500 = 0x16,
    AC1800 = 0x19,
    AC1800a = 0x18,
    AC1To2 = 1,
    AC1To40 = 2,
    AC1To50 = 3,
    AC2100a = 0x1a,
    AC2400a = 0x1c,
    AC2To10 = 5,
    AC2To20 = 4,
    AC2To21 = 6,
    AC2To22 = 7,
    Current = 0x1d,
    Max = 0x7fff,
    MC0To0 = 0,
    Newest = 0x1d,
    Unknown = 0x7ffe
}

 My short research indicates AC1800 represents 2004

Regards

[Anonymous]

Version history

Version Internal version AutoCAD versions

DWG R1.0	MC0.0	AutoCAD Release 1.0
DWG R1.2	AC1.2	AutoCAD Release 1.2
DWG R1.40	AC1.40	AutoCAD Release 1.40
DWG R2.05	AC1.50	AutoCAD Release 2.05
DWG R2.10	AC2.10	AutoCAD Release 2.10
DWG R2.21	AC2.21	AutoCAD Release 2.21
DWG R2.22	AC1001, AC2.22	AutoCAD Release 2.22
DWG R2.50	AC1002	AutoCAD Release 2.50
DWG R2.60	AC1003	AutoCAD Release 2.60
DWG R9	AC1004	AutoCAD Release 9
DWG R10	AC1006	AutoCAD Release 10
DWG R11/12	AC1009	AutoCAD Release 11, AutoCAD Release 12
DWG R13	AC1012	AutoCAD Release 13
DWG R14	AC1014	AutoCAD Release 14
DWG 2000	AC1015	AutoCAD 2000, AutoCAD 2000i, AutoCAD 2002
DWG 2004	AC1018	AutoCAD 2004, AutoCAD 2005, AutoCAD 2006
DWG 2007	AC1021	AutoCAD 2007, AutoCAD 2008, AutoCAD 2009
DWG 2010	AC1024	AutoCAD 2010, AutoCAD 2011, AutoCAD 2012
DWG 2013	AC1027	AutoCAD 2013

[Anonymous]

What about the other codes:

Current, Max, Newest, and Unknown? 

What happens to the drawing when each of the above are chosen?

- Cb