# Xamarin Forms - Desenvolvimento de Aplicações

**URL:** <https://forum.casadocodigo.com.br/t/xamarin-forms-desenvolvimento-de-aplicacoes/486>\
**Category:** Livros\
**Tags:** xamarin\
**Created:** [Abril 19, 2017, 5:52pm UTC](https://forum.casadocodigo.com.br/t/xamarin-forms-desenvolvimento-de-aplicacoes/486 "2017-04-19T17:52:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Pita](https://avatars.discourse-cdn.com/v4/letter/p/3ec8ea/32.png) [@Pita](https://forum.casadocodigo.com.br/u/Pita)\
**Post date:** [Abril 19, 2017, 5:52pm UTC](https://forum.casadocodigo.com.br/t/xamarin-forms-desenvolvimento-de-aplicacoes/486/1 "2017-04-19T17:52:46Z")

</div>

Fiz o download indicado no livro mas na hora de executar o código não esta funcionando, estou usando

Microsoft Visual Studio Community 2015 Version 14.0.25425.01 Update 3  
Microsoft .NET Framework Version 4.6.01586  
Xamarin 4.4.0.34 (3f99c5a) Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.  
Xamarin.Android 7.2.0.7 (b16fb82) Visual Studio extension to enable development for Xamarin.Android.  
Xamarin.iOS 10.8.0.174 (7656cc6) Visual Studio extension to enable development for Xamarin.iOS.

São vários erros:

Severity Code Description Project File Line Suppression State  
Error CS0234 The type or namespace name ‘Forms’ does not exist in the namespace ‘Xamarin’ (are you missing an assembly reference?) Modulo1.Droid C:\FontesCS\Android\xamarin-casa-do-codigo-master\capitulo 03\Modulo1\Droid\MainActivity.cs 14 Active  
Error CS0115 ‘MainActivity.OnCreate(Bundle)’: no suitable method found to override Modulo1.Droid C:\FontesCS\Android\xamarin-casa-do-codigo-master\capitulo 03\Modulo1\Droid\MainActivity.cs 16 Active  
Error CS0103 The name ‘TabLayoutResource’ does not exist in the current context Modulo1.Droid C:\FontesCS\Android\xamarin-casa-do-codigo-master\capitulo 03\Modulo1\Droid\MainActivity.cs 18 Active  
Error CS0103 The name ‘ToolbarResource’ does not exist in the current context Modulo1.Droid C:\FontesCS\Android\xamarin-casa-do-codigo-master\capitulo 03\Modulo1\Droid\MainActivity.cs 19 Active  
Error CS0234 The type or namespace name ‘Forms’ does not exist in the namespace ‘Xamarin’ (are you missing an assembly reference?) Modulo1.Droid C:\FontesCS\Android\xamarin-casa-do-codigo-master\capitulo 03\Modulo1\Droid\MainActivity.cs 23 Active  
Error CS0103 The name ‘LoadApplication’ does not exist in the current context Modulo1.Droid C:\FontesCS\Android\xamarin-casa-do-codigo-master\capitulo 03\Modulo1\Droid\MainActivity.cs 25 Active

Obrigado