# How to access the inner exception information from .NET exceptions? **URL:** \ **Category:** IronRuby\ **Created:** [January 26, 2011, 2:17pm UTC](https://www.ruby-forum.com/t/how-to-access-the-inner-exception-information-from-net-exceptions/202298 "2011-01-26T14:17:17Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![luislavena](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/0ea827/32.png) [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Post date:** [January 26, 2011, 2:17pm UTC](https://www.ruby-forum.com/t/how-to-access-the-inner-exception-information-from-net-exceptions/202298/1 "2011-01-26T14:17:17Z")
Hi, I am wondering how I can expose the inner exception information within IronRuby. My program is throwing an exception only on one user’s computer, the exception originates in a SelectItem method in WPF RibbonControlsLibrary, ComboBox. I am able to catch the exception and log it, by using a begin; (code); rescue =\> e; logger.debug [e.class, e.message, e.backtrace.join("\n")].join(" "); end. However this seems to only give me superficial information about exceptions thrown by .NET. I would like to be able to log all the exception information, incl each inner exception, so I can evaluate the problem and hopefully solve it. Is this possible or are there any other suggestions? Thanks for any help! This is the current exception output; System::TypeInitializationException The type initializer for ‘System.Windows.Automation.InvokePatternIdentifiers’ threw an exception. PresentationCore:0:in `Initialize' PresentationCore:0:in`.ctor’ PresentationCore:0:in `.ctor' PresentationFramework:0:in`.ctor’ RibbonControlsLibrary:0:in `.ctor' RibbonControlsLibrary:0:in`OnCreateAutomationPeer’ PresentationCore:0:in `CreateAutomationPeer' PresentationCore:0:in`CreatePeerForElement’ RibbonControlsLibrary:0:in `OnSelected' RibbonControlsLibrary:0:in`ChangeSelection’ RibbonControlsLibrary:0:in `CoerceSelectedItem' WindowsBase:0:in`ProcessCoerceValue’ WindowsBase:0:in `UpdateEffectiveValue' WindowsBase:0:in`SetValueCommon’ WindowsBase:0:in `SetValue' RibbonControlsLibrary:0:in`set\_SelectedItem’ C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/dialog\_util.rb:60:in `select_item' C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/ui_logic.rb:1124:in`load\_combobox’ C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/ui\_logic.rb:1051:in `load_data' C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/ui_logic.rb:1051:in`each\_pair’ C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/ui\_logic.rb:1051:in `load_data' C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/ui_logic.rb:174:in`initialize’ WindowsBase:0:in `InternalRealCall' WindowsBase:0:in`TryCatchWhen’ WindowsBase:0:in `InvokeImpl' WindowsBase:0:in`InvokeInSecurityContext’ mscorlib:0:in `runTryCode' mscorlib:0:in`ExecuteCodeWithGuaranteedCleanup’ mscorlib:0:in `RunInternal' mscorlib:0:in`Run’ mscorlib:0:in `Run' WindowsBase:0:in`Invoke’ WindowsBase:0:in `ProcessQueue' WindowsBase:0:in`WndProcHook’ WindowsBase:0:in `WndProc' WindowsBase:0:in`DispatcherCallbackOperation’ WindowsBase:0:in `InternalRealCall' WindowsBase:0:in`TryCatchWhen’ WindowsBase:0:in `InvokeImpl' WindowsBase:0:in`SubclassWndProc’ WindowsBase:0:in `DispatchMessage' WindowsBase:0:in`PushFrameImpl’ WindowsBase:0:in `PushFrame' WindowsBase:0:in`Run’ PresentationFramework:0:in `RunDispatcher' PresentationFramework:0:in`RunInternal’ PresentationFramework:0:in `Run’ ---
**Author:** ![Sick\_Boy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/3d9bf3/32.png) [@Sick\_Boy](https://www.ruby-forum.com/u/Sick_Boy)\ **Post date:** [January 26, 2011, 2:48pm UTC](https://www.ruby-forum.com/t/how-to-access-the-inner-exception-information-from-net-exceptions/202298/2 "2011-01-26T14:48:06Z")
Answered my own question after inspecting the exception methods, and the .NET System.Exception class. Base/Inner exception seems to be what I was mostly after: logger.debug [ “#{e.class}: #{e.message}”, “Base Exception: #{e.GetBaseException}”, “Inner Exception: #{e.InnerException}”, “StackTrace: #{e.StackTrace}”, “Source: #{e.Source}”, “TargetSite: #{e.TargetSite}”, “Data: #{e.Data}”, “BackTrace: #{e.backtrace.join(”\n")}" ].join("\n") From: removed\_email\_address@domain.invalid To: removed\_email\_address@domain.invalid Date: Wed, 26 Jan 2011 13:08:29 +0000 Subject: [Ironruby-core] How to access the inner exception information from .NET exceptions? Hi, I am wondering how I can expose the inner exception information within IronRuby. My program is throwing an exception only on one user’s computer, the exception originates in a SelectItem method in WPF RibbonControlsLibrary, ComboBox. I am able to catch the exception and log it, by using a begin; (code); rescue =\> e; logger.debug [e.class, e.message, e.backtrace.join("\n")].join(" "); end. However this seems to only give me superficial information about exceptions thrown by .NET. I would like to be able to log all the exception information, incl each inner exception, so I can evaluate the problem and hopefully solve it. Is this possible or are there any other suggestions? Thanks for any help! This is the current exception output; System::TypeInitializationException The type initializer for ‘System.Windows.Automation.InvokePatternIdentifiers’ threw an exception. PresentationCore:0:in `Initialize' PresentationCore:0:in`.ctor’ PresentationCore:0:in `.ctor' PresentationFramework:0:in`.ctor’ RibbonControlsLibrary:0:in `.ctor' RibbonControlsLibrary:0:in`OnCreateAutomationPeer’ PresentationCore:0:in `CreateAutomationPeer' PresentationCore:0:in`CreatePeerForElement’ RibbonControlsLibrary:0:in `OnSelected' RibbonControlsLibrary:0:in`ChangeSelection’ RibbonControlsLibrary:0:in `CoerceSelectedItem' WindowsBase:0:in`ProcessCoerceValue’ WindowsBase:0:in `UpdateEffectiveValue' WindowsBase:0:in`SetValueCommon’ WindowsBase:0:in `SetValue' RibbonControlsLibrary:0:in`set\_SelectedItem’ C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/dialog\_util.rb:60:in `select_item' C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/ui_logic.rb:1124:in`load\_combobox’ C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/ui\_logic.rb:1051:in `load_data' C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/ui_logic.rb:1051:in`each\_pair’ C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/ui\_logic.rb:1051:in `load_data' C:/Program Files (x86)/Six Updater/Lib/ruby/gems/1.9.1/gems/six-updater-gui-0.2.0/lib/six/updater-gui/ui_logic.rb:174:in`initialize’ WindowsBase:0:in `InternalRealCall' WindowsBase:0:in`TryCatchWhen’ WindowsBase:0:in `InvokeImpl' WindowsBase:0:in`InvokeInSecurityContext’ mscorlib:0:in `runTryCode' mscorlib:0:in`ExecuteCodeWithGuaranteedCleanup’ mscorlib:0:in `RunInternal' mscorlib:0:in`Run’ mscorlib:0:in `Run' WindowsBase:0:in`Invoke’ WindowsBase:0:in `ProcessQueue' WindowsBase:0:in`WndProcHook’ WindowsBase:0:in `WndProc' WindowsBase:0:in`DispatcherCallbackOperation’ WindowsBase:0:in `InternalRealCall' WindowsBase:0:in`TryCatchWhen’ WindowsBase:0:in `InvokeImpl' WindowsBase:0:in`SubclassWndProc’ WindowsBase:0:in `DispatchMessage' WindowsBase:0:in`PushFrameImpl’ WindowsBase:0:in `PushFrame' WindowsBase:0:in`Run’ PresentationFramework:0:in `RunDispatcher' PresentationFramework:0:in`RunInternal’ PresentationFramework:0:in `Run’