Can you do an APPLOAD from a C# program?

[ganderson]

Hi,

   I have some AutoLisp functions that I use in conjunction with my .NET c# program. Is there a way to load them from the C# program. Right now I'm using APPLOAD before I run my dll, but it occurs to me that I might be able to load them from the dll. Any suggestions? Code samples?

     Thanks,

                  ~Vonnie A.

[SENL1362]

is this what you are loooking after:
var lispPathname="c:\temp\x.lsp".Replace('\','/');
var loadLispCmd=string.format("(load {0} {1}",Quote(lispPathname),Quote("Failed to load Lisp"));
doc.SendStringToExecute(loadLispCmd);
...

public static string Quote(string str)
{
string quoted = string.Format("\"{0}\"", str);
return quoted;
}

[ganderson]

Not sure I understand your code. Is public static string Quote(string str) what I call to load the lisp program? I understand the var statements, I just don't see the call.

           Thanks for the help,

                     ~Giovonnae

[_gile]

Hi,

From .NET, you can use SendStringToExecute() to load your LISP files.

SENL 1362 reply focuses on the string format of the LISP expression to pass to the SendStringToExecute() method.

Using the same path example (C:\Temp\x.lsp), it can be written:

doc.SendStringToExecute("(load \"C:\\\\Temp\\\\x.lsp\") ", false, false, true);

or:

doc.SendStringToExecute(@"(load ""C:\\Temp\\x.lsp"") ", false, false, true);

Anyway, you have to keep in mind SendStringToExecute() runs asynchronously, and a .NET app is loaded once per session while a LISP function have to be loaded in each document.

By my side I won't load LISP files from .NET but use some LISP auto loading mechanism instead.

[erdem_babayigit]

Hello Folks, I swear yesterday my code was working and I was able to load .FAS files on command from my dll file. Can anyone see in my code what could be wrong I keep getting the error message VLA-OBJECT nil

[CommandMethod("LoadFAS")]
public void LoadFAS()
{
Document doc = Application.DocumentManager.MdiActiveDocument;
Editor ed = doc.Editor;

string getpathdynamically = doc.Name;
string FasFolder = "FAS Dateien";
string relativePath = Path.Combine(Path.GetDirectoryName(getpathdynamically), FasFolder);

string[] FasFiles = new string[]
{
"KARISDAT_DB64",
"KARISDAT_INF64",
"KARISDAT_DB64",
"KARISDAT_INF64",

};

foreach (string fileName in FasFiles)
{
string filePath = Path.Combine(relativePath, fileName + ".FAS");

ed.WriteMessage("\nFILEPATH: " + filePath);

if (File.Exists(filePath))
{
filePath = ReplaceBackslashes(filePath);
doc.SendStringToExecute($"(load \"{filePath}\") ", false, false, true);
}
else
{
ed.WriteMessage("\nThe file does not exist.");
Application.ShowAlertDialog($"The file '{filePath}' does not exist.");
}
}
}

[erdem_babayigit]

string ReplaceBackslashes(string input)
{
return input.Replace("\\", "\\\\");
}

[norman.yuan]

The SendStringToExecute() is executed asyncly, as @_gile mentioned in previous reply. That means, it only gets called AFTER your command method ends, thus, only one of the *.FAS file is loaded. That is, you CANNOT run SendStringToExecye() inside a "for/do/while" loop, unless there is only one loop and the loop is the LAST statement of your command method.

[a.kouchakzadeh]

nicely explained! 

[erdem_babayigit]

I must say I am very surprised and very happy that we do get such a quick response to a question to a post thats 8 years old, for me it was just a shot into the blue, but here we go! I shall edit the code and report here soon! Best wishes, from Germany, Erdem.

[erdem_babayigit]

Dismissing the loop for now or dll script for now, when I simply put the command (load "C:\\Karisdat\\FAS Dateien\\Karisdat_db64.fas") into the autocad command line; I get following ERROR message:

Command: (load "C:\\Karisdat\\FAS Dateien\\Karisdat_db64.fas")
; Error: ActiveX-Server returns: Error loading type library/DLL

[erdem_babayigit]

the file definitely exist btw

[erdem_babayigit]

Okay it seems I found out why, when opening another version of autocad ( MAP 2020 ) it does work and asks me if I want to load it. So now I wonder if there is purge feature, or some other debugging issues, or perhaps it has to do with which drawing I'm loading?