Intro to Error Reporting! Join MVP Russ Fustino in this hot off the metal session as he shares how he used Raygun in a production cross platform app. The app is published to Android, iOS, Windows Store and Windows Phone. Russ will show a Xamarin Forms app written in C# with a hybrid piece that uses JavaScript. Russ shares how he implemented Raygun world class error reporting into this app with proactive email support. See how he used Raygun this during the development cycle to help debug errors and some weird bugs for the Endorsed Jethro Tull app. Be proactive and fix errors before your users hound you down. See an overview of Raygun and the many supported platforms as well as integrations. Topics covered include: • Dashboard for Test • Dashboard for Prod • Initialization • Error Reporting • Xamarin Dependency Injection • Custom Tags • Strategic areas in the code for try / catch • Affected User support • Passing email address from C# to an HTML page with JavaScript for affected user support

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Fustino Brothers, Inc. We Build Powerful Apps!
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Intro to Error Reporting
• Russ Fustino, MVP
• CEO Fustino Brothers, Inc
• @RussFustino
• Russ@FustinoBrothers.com
1www.FustinoBrothers.com | @FustinoBrothers
FBI: 850.366.3232 | Fax: 1.856.267.1568

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A little about me
• Former Developer Evangelist for Microsoft,
Xamarin, Raygun and ComponentOne
• CEO, Fustino Brothers, Inc
• Publisher of Several Windows 8,
Windows Phone 8, iOS, and Android Apps
• MVP Microsoft Platform Developer
• Publisher of Jethro Tull App, Endorsed
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How did I improve app quality?
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Find Bugs Before your Users do.
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Why is this important?
• Common error reporting for many platforms and languages.
• Getting started?
• Need more help in analyzing errors and the cause.
• I need to know how well my apps works in production.
• If my app crashes, I wanted to know about it and what the
cause is?
• Stack traces are great, can I get in production?
• I needed more app specific information in my error reporting.
• Raygun works for Xamarin iOS an Android, but what about
Xamarin Forms?
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What were the Challenges?
• Common error reporting for many platforms and languages.
• Getting started?
• Need more help in analyzing errors and the cause.
• I need to know how well my apps works in production.
• If my app crashes, I wanted to know about it and what the
cause is?
• Stack traces are great, can I get in production?
• I needed more app specific information in my error reporting.
• Raygun works for Xamarin iOS an Android, but what about
Xamarin Forms?

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Agenda
• Error Reporting
• Initialization
• Dashboards for Test and Production environments
• Xamarin Dependency Injection
• Strategic areas in the code for try / catch
• Custom Tags
• Affected User support
• Passing email address from C# to an HTML page with
JavaScript for affected user support

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Error Reporting
• Did you ever send screenshots? It’s only part of the story
• Real Time Notifications, Saving Time… Saves Money
• Retain customers… Convert trials
• Only 1% of your users even tell you that something is
wrong
• If I only had stack trace, that would be gold
• Error grouping is essential, provides sanity for not
exploding my inbox email
• Bottom line… I need to improve developer productivity
and reduce cost

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Raygun Platforms
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Initialization
Generally, one line of code … example for Xamarin iOS

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Raygun Dashboard
180 day retention period
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Dashboards for Test and Production

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Global Dashboard
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Grouping on Errors
• It’s not the message that counts, it’s the cause
• Use stack trace data to group
• Raygun tends to err on side of the error not in the same group
• You can merge groups. IE, stack traces are different, but it’s the
same underlining problem
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If an error is serious, you will know
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Affected Users
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Affected Users Properties

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Stack Trace is Gold
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Try / Catch
• Raygun supports unhandled errors
• Where you want custom messages, use try catch
• Create your own subclasses of Exception to represent
state
• Examples, in my app:
• RSS Feed
• Navigating to other sites
• Handling of images

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Custom Tags
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Passing email address
from C# to HTML Page

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Demos
• Xamarin Forms
• JavaScript

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Resources
• Some useful plugins for Xamarin (Device, Settings, etc..):
• https://github.com/jamesmontemagno/xamarin.plugins
• Affected user tracking:
• https://github.com/MindscapeHQ/raygun4net#affected-user-tracking
• Tags:
https://github.com/MindscapeHQ/raygun4net#tags-and-custom-data
• .NET Platforms:
https://raygun.io/docs/languages/net
• Language support:
https://raygun.io/docs/languages

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Resources
• Plugins:
https://raygun.io/docs/plugins /
• Workflow:
https://raygun.io/docs/workflow/
• Raygun blog:
https://raygun.io/blog/
• Case Studies:
https://raygun.io/blog/case-studies/
• Dependency Injection:
http://developer.xamarin.com/guides/cross-platform/xamarin-
forms/dependency-service/

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Summary
• Error Reporting
• Initialization
• Dashboards for Test and Production environments
• Xamarin Dependency Injection
• Strategic areas in the code for try / catch
• Custom Tags
• Affected User support
• Passing email address from C# to an HTML page with
JavaScript for affected user support

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Monthly online seminars! 2nd Monday of month
on Business and Apps
• Register at:
www.meetup.com/InBusinessLinksNetwork-
FustinoBrothersInc/
• Past presentations
http://www.inbusinessseo.net/tps-blog
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Twitter love
• Xamarin www.Xamarin.com
• Raygun www.Raygun.io
• Xamarin Forms: http://xamarin.com/forms
• Windows App Studio: http://appstudio.windows.com
• If you liked this session:
• @RussFustino
• @Raygunio
• @XamarinHQ
• @FustinoBrothers
• #MicrosoftAppStudio
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…Powerful Apps!
It’s Easy to Connect With Us…
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