Although there are useful posts out there on catching CLR errors in X++ for older versions of Dynamics AX, as of this writing, I couldn’t find one that address the current version. It took me a little experimentation and trial-and-error to figure out how to do it; in particular, to actually return a useful error message, instead of just a generic CLR error. Below is the pattern I use. For simplicity, I’m leaving out some of the other types of CATCH you might use, as well as other detail irrelevant to the pattern.
As usual, I would greatly appreciate comments on whether this works for you, and if you know of any improvements.
| System.Exception e; | |
| InteropPermission interopPermission; | |
| try | |
| { | |
| interopPermission = new InteropPermission(InteropKind::ComInterop); | |
| interopPermission.assert(); | |
| // REST OF CODE THAT MIGHT GENERATE A CLR ERROR | |
| } | |
| catch (Exception::CLRError) | |
| { | |
| e = CLRInterop::getLastException(); | |
| if (e != null) | |
| { | |
| e = e.InnerException; | |
| throw error(e.ToString()); | |
| //…or whatever you want to do with that error text | |
| } | |
| else | |
| { | |
| throw error("null CLR error caught blah blah blah"); | |
| } | |
| } | |
| catch | |
| { | |
| //other error handling | |
| } | |
| finally | |
| { | |
| CodeAccessPermission::revertAssert(); | |
| } |
