Hi,
I have written an external application to drive autocad with a dll that was registered for COM. I have followed this codes to write my application however i have replaced the following code with AddNumbers() method:
public string OpenDWGFile(string MyDWGFilePath)
{
DocumentCollection dm = Application.DocumentManager;
Document doc = null;
if(File.Exists(MyDWGFilePath))
{
doc = dm.Open(MyDWGFilePath, false);
Application.DocumentManager.MdiActiveDocument = doc;
return "This file is exists";
}
else
return "This file is not exist";
}
but when i run my application the autocad software open and then close immediatly and this error message is shown : Exception has been thrown by the target of an invocation.
but if i comment the following lines of my code the application works without any errors:
doc = dm.Open(MyDWGFilePath, false);
Application.DocumentManager.MdiActiveDocument = doc;
please help me.
