[Mono-dev] Unable to debug

Nogginboink mono at companies.mucker.net
Thu Feb 2 19:18:04 UTC 2012

I am new to Mono. I have written a C# app in Visual Studio 2005 that works
fine when run under Windows. However, when I launch the app under Mono I get
a divide by zero exception in the Resize() event handler of a usercontrol
that I wrote. (I surmise that Mono is calling the Resize event at startup
when Windows doesn't. I fully believe the divide by zero error is in my

I am running MonoDevelop version 2.2.1 on Ubuntu 10.04. According to Ubuntu
Software Center, I have mono-debugger version 2.4.3-2 and
monodevelop-debugger-mdb version 2.2.1-1 installed . In the MonoDevelop
Add-in Manager, I see two debugging add-ins: MDB support for Mono.debugging
version 2.2, and Asp.Net Debugging Support version 2.2 I am able to load my
VS2005 solution in MonoDevelop. 

The Run menu has an option for Debug, but Step Over, Step Into, etc. are
greyed out. When I set a breakpoint and select Debug from the run menu, I
get the exception record in the Application Output window in MonoDevelop,
but I had expected source-code debugging to be triggered when the exception
was hit, and the offending line to be displayed in the code editor.

I'm afraid that I don't know what I'm doing wrong here. I'm reasonably
certain that I didn't configure something properly, but I've no idea what
that something might be. Can anyone help me figure this out?

(Oddly, I have also noticed that calls to
System.Diagnostics.Debug.WriteLine() don't send output to the Application
Output window, either. Is this expected?)

I sincerely appreciate any help that the group could offer. Thanks in

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