CODEWITHSUNDEEP
c#.netmononullreferenceexceptionxamarin-studio
Alex Rice
Alex Rice

Reputation: 173

cannot get stacktrace, source line # information from Mono .dll

I am running some .NET .dlls on Windows Server 2012. The .NET assemblies were compiled from C# code on OS X with Xamarin 4.0. (yeah I know weird setup- but I am a game developer) In general they run perfectly, but when it comes to inspecting Exception information, it's not so good. I am trying to pull info out of an Exception object, but it's all empty. I also tried copying the .mdb files along with the .dlls, and made sure I was building in Debug, and with debug symbols. For example this code

log.Error (ex.ToString ());
var st = new StackTrace(ex, true);
var frame = st.GetFrame(0);
var line = frame.GetFileLineNumber();
log.ErrorFormat ("st: {0}, frame: {1}, line: {2}", st.ToString (), frame.ToString (), line);

Generates output like this, just the method name, basically

System.NullReferenceException: Object reference not set to an instance of an object.
at Mindlube.CD3.RandomMatchMaker.ProcessMatchQueue() [ThreadFiber-1] ERROR Mindlube.CD3.App [(null)] - st:    
at Mindlube.CD3.RandomMatchMaker.ProcessMatchQueue(), frame: ProcessMatchQueue 
at offset 927 in file:line:column <filename unknown>:0:0, line: 0

Any suggestions for getting more detailed Exception information? Using Visual Studio on Windows is not currently an option because I don't have time to re-tool my entire dev environment. So don't say 'use VStudio' :)

Upvotes: 0

Views: 662

Answers (1)

Rolf Bjarne Kvinge
Rolf Bjarne Kvinge

Reputation: 19345

This is because .NET does not understand mdb files.

Unfortunately there is no tool to convert mdb files to pdb files, your only options would be to either write your own or execute your app using Mono on your Windows machine.

Upvotes: 2

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