![]() ![]() Open the blocktable, get the modelspace Create a database and try to load the fileĭatabase db = new Database( false, true) ĭb.TransactionManager.StartTransaction() "\nEnter the path of a DWG or DXF file: " Static public void ExtractObjectsFromFile()Ī Let's take a very simple example, where we open a particular file on disk, and iterate through the model-space, listing a little bit of data about each object: When reading a DWG you will need to pass False as the first argument - what you pass as the second depends on your need.įrom there you work with the Database object, accessing the header variables and the objects stored in the various dictionaries and symbol tables, just as you would inside AutoCAD. ![]() Please remember to use the appropriate constructor: the standard constructor without arguments creates a Database object that cannot be used in this manner (it creates one that you would typically use to create a new DWG file). The basic technique is to create a Database object, and read a DWG file into it. #Autocad unable to save drawing code#Although any code that's intermingled which accesses AutoCAD-resident functionality will not work, of course. ![]() NET to access side databases can be used with almost no modification on top of RealDWG to access the same data outside AutoCAD. One interesting point to note, is that any code you write using ObjectARX or. NET (when we introduced the managed layer in 2005, I believe). perhaps it was in AutoCAD 2000 but it might have been later) and. Side databases have been available through ObjectARX since it was introduced in R13, but were introduced more recently in COM (the AxDb implementation was introduced several releases back, although I can't remember exactly when. You may also hear the term "lazy loaded" - these DWG files are not loaded completely into memory (unless you choose to access all the data stored in them), they are brought in, as needed, making the access very efficient. Basically they're DWG files that are not open in the AutoCAD editor, but ones we want to access programmatically to load geometry or settings. What we're talking about today are often referred to as "side databases" or "external databases". So now it's time to do the topic a little more justice. But at the time this topic wasn't the main thrust of the post, it was really more of an implementation detail. ![]() I then looked into the code a little further in a follow-up post. This topic was briefly introduced almost a year ago, in this post. ![]()
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