title: how to fix conflict system.Net.http
body: <p>Hello I try to install the todo list azure <a href="https://developer.xamarin.com/samples/xamarin-forms/WebServices/TodoAzure/" rel="nofollow noreferrer">https://developer.xamarin.com/samples/xamarin-forms/WebServices/TodoAzure/</a></p>
  
  <p>when i compile i get a warning about systeme.net.http i found this about it but i do not see any web.config in my project should i create it?
  <a href="https://stackoverflow.com/questions/12893854/system-net-http-version-conflict-causing-build-warning">System.Net.Http version conflict causing build warning</a></p>
  
  <p>i also have 50 warning about skipping documentDBTodo.droid.Ressource...</p>
  
  <p>and my preview view say an exception occurred</p>
  
  <p><a href="https://gyazo.com/058dfeac6a2561ef799e03f6e2430853" rel="nofollow noreferrer">https://gyazo.com/058dfeac6a2561ef799e03f6e2430853</a></p>
  
  <p>Thank you</p>
  
  <p>I fixed the device.os is obsolet</p>
  
  <p>i updated : 
  xamarin.Forms
  Microsoft.Azure.DocumenDbCore</p>
  
  <p>I just want a todo list preconfigured for online server with xamarin</p>