They are written in many languages, such as C, C++, C#, Delphi, Visual Basic, Visual Basic.Net, and so forth. To edit DLL files is not as easy as you think. DLLs must be called from other code that is already executing." 2 When need to edit DLL files? Unlike an executable (EXE) file, a DLL cannot be directly run. Programmers use DLLs to provide code that they can reuse and to parcel out distinct jobs. "A Dynamic Link Library (DLL) is a file of code containing functions that can be called from other executable code (either an application or another DLL). Though there are different explanations given from Microsoft, this one could be the better one: Proven solutions 1 What's the DLL File?ĭLL stands for "Dynamic Link Library".That is, you can either load your Add-in with AutoCAD's auto plug-in loading mechanism, or setup "TrustedDomains/Paths", so that the code is considered by AutoCAD as safe code. You really need to understand the latest security settings for AutoCAD, instead of trying to use in, or trying to programmingly bypass security (which is equivalent to write virus/malicious code:-(). Since later AutoCAD versions added tigher code execution security, a DLL would not be considered safe not only when it locates outside of local drive, but also when it locates in local drive as long as it is not in a folder specified by "TrustedDomains" and "TrustedPaths". NET add-in, originally, when the DLL is placed in a network location, one can use his as quick/dirty solution. NET framework 4.0 when the code security execution in "sand box" mode, as an "security compromised" backward compatibility. String appDirectory = // get the application directory _("myDrawingPath", Type.Missing, Type.Missing) _acadApp = (AcadApplication)Activator.CreateInstance(acType, true) ĬommonOperations.Log("Exception", ex.ToString()) Type acType = Type.GetTypeFromProgID(progID) ĪcType = Type.GetTypeFromProgID("AutoCAD.Application")
_acadApp = (AcadApplication)Marshal.GetActiveObject(progID) Is there any other way to fix this error programmatically to avoid editing the config file manually? or is there a better way to load my plug-in DLL and call the lisp functions from it?Ĭonst string progID = "AutoCAD.Application" //for all AutoCAD versions I'm using the following C# code and it works fine in my device but when I tried to run it another machines, I got the attached error message " Cannot load file or assembly.".īut it worked fine after editing AutoCAD config file "" by adding :
I'm developing a windows form application that needs to open AutoCAD and load my plug-in DLL to send custom commands and lisp functions to it. AutoCAD Mechanical : Insert PartReference and list PartReference in BOM 2.
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