This command converts drawing files between .DWG and .DGN file formats. This command is only available when running on IntelliCAD. When running on AutoCAD, the AutoCAD Import and Export commands can be used to convert .DGN files.
When converting DGN files to DWG file format, there are several processing methods. In all cases, multiple files can be selected and processed at a time. The Convert Files method creates DWG files from the selected DGN files. The DWG files automatically have the same file name as the source DGN files except with the different file extension of .DWG. The Insert as Block Reference method inserts the selected DGN files into the current drawing as blocks. The Insert as Entities method imports the entities from the DGN files into the current drawing. The Attach as External Reference brings the selected DGN files into the current drawing as Xrefs. The Overlay option for Attach as External Reference is the same except that this method is not nested.
For converting DWG files to DGN format, the Convert Files method creates DGN files from the selected DWG files. The Convert Current exports the current drawing. In both cases, the DGN files are automatically named after the source DWG files except with the different file extension of .DGN.
Pulldown Menu Location: File
Keyboard Command: dgnio
Prerequisite: A DWG or DGN to convert
This article is about the computer file format. For the Illinois high school, see Downers Grove North.
DGN (design) is the name used for CADfile formats supported by Bentley Systems, MicroStation and Intergraph's Interactive Graphics Design System (IGDS) CAD programs. The DGN format is used in construction projects, including buildings, highways, bridges, process plants, shipbuilding. DGN is a competing format to Autodesk's DWG.
There are two versions of DGN:
- Intergraph Standard File Formats (ISFF) specification, published in the late 1980s by Intergraph. This is sometimes referred to as V7 DGN, or Intergraph DGN.
- In 2000, Bentley Systems created an updated version of DGN which includes a superset of DGN's capabilities, but which has a different internal data structure to the ISFF-based DGN. This version is properly referred to as V8 DGN.
In 2003 OpenDWG™ Alliance (now Open Design Alliance), a non-profit industry consortium committed to promoting open industry-standard formats for the exchange of CAD data, and Bentley Systems, Incorporated, announced that the Alliance will support V8 DGN. Bentley increased its membership level to become the Alliance's first supporting member. The Open Design Alliance provides Teigha for .dgn files (old name is DGNdirect) - a development platform available using C++ that is used with .dgn files and other graphics files.
In 2008 Autodesk and Bentley agreed on exchange of software libraries, including Autodesk RealDWG, to improve the ability to read and write the companies' respective DWG and DGN formats in mixed environments with greater fidelity. In addition, the two companies were to facilitate work process interoperability between their AEC applications through supporting the reciprocal use of available application programming interfaces (APIs).
MicroStation CONNECT Edition Help
- Do one of the following:
From the Work page, click New File.
From the ribbon, choose .
The New dialog opens.
The default file filter is "MicroStation DGN Files [*.dgn]." The file specification for the default seed DGN file displays in the Seed field.
- (Optional) To change the filter, choose the corresponding item in the Save as type option menu.
- (Optional) To select a different seed DGN file, click the Browse button and use the Select Seed File dialog.
- (Optional) To select a different destination disk drive or directory, choose the desired drive or directory from the Save in option menu.
- In the File name field, key in a name for the new DGN file.
The file list is useful for ensuring that the new filename is not that of an existing file, or for selecting an existing filename and amending it.
Although the extension ".dgn" is often used to indicate a MicroStation DGN file, any extension (or no extension) is acceptable.
- Click Save.
MicroStation is a CADsoftware platform for two- and three-dimensional design and drafting, developed and sold by Bentley Systems and used in the architectural and engineering industries. It generates 2D/3D vector graphics objects and elements and includes building information modeling (BIM) features. The current version is MicroStation CONNECT Edition.
MicroStation was initially developed by Bentley Systems and sold and supported by Intergraph in the 1980s. The latest versions of the software are released solely for Microsoft Windowsoperating systems, but historically MicroStation was available for Macintosh platforms and a number of Unix-like operating systems. From its inception MicroStation was designed as an IGDS (Interactive Graphics Design System) file editor for the PC. Its initial development was a result of Bentley Systems's experience developing PseudoStation released in 1984, a program designed to replace the use of proprietary Intergraph graphic workstations to edit DGN files by substituting the much less expensive Tektronix compatible graphics terminals. PseudoStation as well as Intergraph's IGDS program ran on a modified version of Digital Equipment Corporation's VAX super-mini computer.
In 1985, MicroStation 1.0 was released as a DGN file read-only and plot program designed to run exclusively on the IBM PC-AT personal computer.
In 1987, MicroStation 2.0 was released, and was the first version of MicroStation to read and write DGN files.
Almost two years later, MicroStation 3.0 was released, which took advantage of the increasing processing power of the PC, particularly with respect to dynamics.
Intergraph MicroStation 4.0 was released in late 1990 and added many features: reference file clipping and masking, a DWG translator, fence modes, the ability to name levels, as well as GUI enhancements. The 1992 release of version 4 introduced the ability to write applications using the MicroStation Development Language (MDL).
In 1993, MicroStation 5.0 was released. New capabilities included binary raster support, custom line styles, settings manager, and dimension driven design. The "V5 for Power Macintosh provided a comprehensive tool set for both 2-D and 3-D CAD ... with added several truly useful features ... the high-end PowerPC- native CAD package runs on steroids." This was the last version to be supported in Unix. This version was branded both Intergraph (on CLIX) and Bentley MicroStation (on PC). Later versions were all branded Bentley. This was the last version to run on Intergraph CLIX. All platforms other than the PC used 32-bit processors.
In 1995, Windows 95 was released. Bentley soon followed with a release of MicroStation for that operating system. Aside from being the first version of MicroStation to not include the version number in its name (MicroStation 95 was actually MicroStation v5.5), MicroStation 95 included the ability to be mostly driven by graphic icon buttons. This version introduced a host of new features: Accudraw, dockable dialogs, Smartline, revised view controls, movie generation, and the ability to use two application windows (similar to previous Unix driven Intergraph terminals. Many of these features are among the most popular used today. MicroStation 95 was the first version of MicroStation for a PC platform to use 32-bit hardware.
The last multi-platform release, MicroStation SE (SE standing for special edition, but it was actually MicroStation 5.7) was released late in 1997, and was the first MicroStation release to include color button icons. These icons could also be made borderless, just like in Office 97. This version of MicroStation also included several features to enable more work over the internet. This version also introduced enhanced precision and a very commonly used tool in MicroStation - PowerSelector.
MicroStation/J (a.k.a. MicroStation 7.0, a.k.a. MicroStation V7) was released almost a year after SE. The J in the software title stood for Java, as this version introduced a Java-enhanced version of MDL, called JMDL. Other features included QuickvisionGL and a revised help system. MicroStation/J was the last version to be based upon the IGDS file format; since MicroStation/J was actually Version 7, the file format became known as "V7 DGN". That file format had been used for about 20 years.
However, with the advent of MicroStation V8 in 2001 came a new IEEE-754 based 64-bit file format, referred to as V8 DGN. Along with the new file format came many new enhancements, including unlimited levels, a nearly limitless design plane and no limits on filesize. Other features that were added were: Accusnap, Design History, models, unlimited undo, VBA programming, .Net interoperability, True Scale, and standard definitions for working units (as the new file format stored everything internally in meters, but can recognize rational unit conversions so that it can know the size of geometry)(some of these features were also available in MicroStation 95 to MicroStation/J). It also included the ability to work natively with DWG files.
MicroStation V8 2004 Edition (V8.5) followed nearly three years later with support for newer DWG releases, Multi-snaps, PDF creation, the Standards Checker and Feature modeling. MicroStation V8 XM Edition (V8.9) was released in May 2006. It builds upon the changes made by V8. The XM edition includes a completely revised Direct3d-based graphics subsystem, PDF References, task navigation, element templates, color books, support for PANTONE and RAL color systems and keyboard mapping.
In MicroStation V8i (V8.11) the task navigation was overhauled and the then newest DWG format was supported. MicroStation now contains a module for GPS data.
The current version is MicroStation CONNECT Edition (V10). This version updated the application architecture to 64-bit and changed to a Ribbon Interface. Future versions are being delivered as (roughly) quarterly updates.
File format support
Its native format is the DGN format, though it can also read and write a variety of standard CAD formats including DWG, DXF, SKP and OBJ and produce media output in such forms as rendered images (JPEG and BMP), animations (AVI), 3D web pages in Virtual Reality Modeling Language (VRML), and Adobe Systems PDF.
At its inception, MicroStation was used in the engineering and architecture fields primarily for creating construction drawings; however, it has evolved through its various versions to include advanced parametric modeling and rendering features, including Boolean solids, VUE Rendering, raytracing, pathtracing, PBR Materials, and keyframe animation. It can provide specialized environments for architecture, civil engineering, mapping, or plant design, among others.
In 2000, Bentley made revisions to the DGN file format in V8 to add additional features like Digital Rights and Design History - a revision control ability that allows reinstating previous revisions either globally or by selection, and to better support import/export of Autodesk's DWG format. Additionally, the V8 DGN file format removed many data restrictions from earlier releases such as limited design levels and drawing area. CONNECT Edition versions continue to use the V8 DGN file format.
What is a DGN file?
A file with a .dgn (Design) extension is a drawing file created by and supported by CAD applications such as MicroStation and Intergraph Interactive Graphics Design System. It is used for creating and saving designs for construction projects such as highways, bridges, and buildings. The format is similar to Autodesk’s DWG file format and is considered its competitor. DNG files can either be saved as Intergraph Standard File Format or V8 DGN. DGN can be converted to several other formats such as DWG, BMP, JPEG, PDF, GIF and others. It can be opened with Autodesk AutoCAD, Bentley View and Bentley Systems MicroStation in addition to other software applications such as Corel PaintShop Photo Pro and IMSI TurboCAD Deluxe versions.
V8 DGN File Format
A MicroStation V8 DGN file is composed of one or more models. A model is a container for elements. The V8 DGN removes all file format-based constraints that were present in previous versions of MicroStation. Following is a list of improvements in the DGN file format.
- Limit on the number of levels in a DGN file has been removed, and each level is named and stored as an element.
- The maximum physical size of the DGN file does not have any limitation and is only limited by the operating system (such as NT limit is 4 GB)
- The maximum size of a single element is 128 KB.
- There is no limit on the maximum size of a cell.
- Cell names are limited to approximately 500 characters.
- There is no limit to the number of references that can be attached to a DGN file.
- A line string, shape, or point curve can have up to 5000 vertices.
- There is no limit to the number of components in a complex chain or complex shape.
- There is no limit to the number of graphic groups in a DGN file.
- The fence is parallel to the view in which it is placed.
- A single line of text can contain 65,535 characters.
- There is no limit on the maximum size of a text node.
- There is no limit to the number of text nodes in a DGN file.
- Each element has a unique 64-bit identifier that does not change through the life-cycle of the element.
- Each element has a time stamp that indicates the time of the most recent change.
See AlsoSours: https://docs.fileformat.com/cad/dgn/
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