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Auth0 integration and UI with Xamarin

I'm trying to use Auth0 for my mobile application (Xamarin) and I've been following the quickstart guide provided by Auth0.
I've installed the component via Xamarin market (Visual Studio) and to do the integration, I've created a class file dedicated to Auth0 related operations. I copied and pasted the provided code from the quick start guide but visual studio returns this error:
The contextual keyword 'var' may only appear within a local variable declaration or in script code
The code provided used var instead of a normal variable so I'm not sure what I can substitute with it:
using Auth0.SDK;
namespace Application
{
class LoginHandler
{
var auth0 = new Auth0Client(
"*************",
"************************");
}
}
I'm not sure what I'm doing wrong, I'd also like some help implementing the Login UI as the Xamarin guides are deathly outdated.

Short answer: You can use Auth0Client instead of var.
internal class LoginHandler
{
private Auth0Client auth0 = new Auth0Client("***", "*****");
}
Long answer:
The snippet is assuming you would use the Auth0 client instance in a context where it would be considered a local variable and as such it would be valid code. For example:
internal class LoginHandler
{
public void HandleLogin()
{
var auth0 = new Auth0Client("***", "*****");
// ...
}
}
If you require assistance in solving other specific issues then you should post specific questions that clearly illustrate the problem you're having.

get application path in asp.net vnext

I've been trying to open a file in asp.net 5 and have not been having a lot of success.
In the past you used Server.MapPath or HostingEnvironment.ApplicationPhysicalPath. They are both gone in the OWIN based framework.
There is a HostingEnvironment class but it's in the System.Aspnet but it needs to be initialized by the hosting environment (it no longer has a static member for ApplicationPhysicalPath but I'm guessing the WebRoot member does that now. The problem is I can't find a reference to it anywhere.
I've also looked at Context.GetFeature<> but it doesn't seem to have any feature that would show the application path, just request and response related info. The code listing the features can be found here.
<snark>Is the ability to work with files a discontinued feature in ASP.NET?</snark>
There is also the possibility that I can't brain very well right now and missed something.

You can get it from the ApplicationBasePath property of Microsoft.Framework.Runtime.IApplicationEnvironment serivce.
Example: https://github.com/aspnet/Mvc/blob/9f1cb655f6bb1fa0ce1c1e3782c43a2d45ca4e37/test/WebSites/FilesWebSite/Controllers/DownloadFilesController.cs#L28

There are two approaches now:
using Microsoft.Extensions.PlatformAbstractions;
public Startup(IApplicationEnvironment appEnv)
{
// approach 1
var path01 = PlatformServices.Default.Application.ApplicationBasePath;
// approach 2
var path02 = appEnv.ApplicationBasePath;
}

Bound function call returns InvalidOperationException

I'm following this OData V4 tutorial and now have a problem with the bound function MostExpensive.
This function is bound to the Productscollection and is registered in WebApiConfig.Register() like suggested in the tutorial:
ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
builder.Namespace = "ProductService";
builder.EntityType<Product>().Collection.Function("MostExpensive").Returns<decimal>();
There is only described a rudimentary client for this service in part 2 of this tutorial. So I want to extend it so that I also can call the functions described in the later parts of the tutorial.
I have created the client using OData Client Code Generator as suggested in the tutorial. I then add some products and suppliers and then want to get the most expensive product:
static void Main(string[] args)
{
const string serviceUri = "http://localhost:52542";
Container container = new Container(new Uri(serviceUri));
AddProducts(container, GenerateSomeProducts());
AddSuppliers(container, GenerateSomeSuppliers());
Console.WriteLine("Most expensive product is: {0}", container.Products.MostExpensive().GetValue());
...
}
When calling GetValue() I am getting an InvalidOperationException stating that http://localhost:52542/$metadata refers to a Edm.Decimal type but a Collection(Edm-Decimal) type is expected.
When calling http://localhost:52542/Products/ProductService.MostExpensive() directly in the browser I'm getting
{
"#odata.context":"http://localhost:52542/$metadata#Edm.Decimal","value":40000.95
}
Which seems to be correct.
Do I do anything wrong? I have no idea how to fix this. So any suggestions about that?

I guess you are using T4 2.2.0, right?
There is a bug in T4 2.2.0 which causes this issue. You can use the content in following link to replace your ttinclude file and regenerate your proxy to work around the issue.
https://raw.githubusercontent.com/LaylaLiu/odata.net/T4TempFix/src/CodeGen/ODataT4CodeGenerator.ttinclude

PhluffyFotos does not work on Azure SDK 1.3

I have tried PhluffyFotos example on Azure SDK 1.2 and it works perfect. Today I have installed on another (clen) computer Azure SDK 1.3 and I have also want to try PhluffyFotos on it but it does not work. I have problem with this part:
if (!Roles.GetAllRoles().Contains("Administrator"))
{
Roles.CreateRole("Administrator");
}
It seems it somehow does not load the custom RoleProvider (TableStorageRoleProvider). Do you have any idea what it could be?
I get the following error: "The Role Manager feature has not been enabled.", because of the following exception "'System.Web.Security.Roles.ApplicationName' threw an exception of type 'System.Configuration.Provider.ProviderException'".
Can someone test this example and see what is the problem? http://phluffyfotos.codeplex.com/
Firsty I have the "SetConfigurationSettingPublisher" problem with this example, but I have successfully resole it.
EDIT:
I have look deeper into it and I am sure there are a problem with Role provider. Somehow the Roles class do not read config file. Have anyone any idea why?

I have the exact same problem with my own project. I verified with Fusion logs that the assembly which contains the custom providers dont even load. so it seems the problem is somehow related to the web.config settings being ignored.

To run PhluffyFotos example on Azure SKD 1.3 you have to the following:
Change reference Microsoft.WindowsAzure.StorageClient from 1.0 to 1.1
Move "GetConfigurationSettingValue" to the Global.asax "Application_Start" event.
Move Role related initialization to the Global.asax "Application_BeginRequest" event, but you have to ensure that it executes only once. Example:
private static object gate = new object();
private static bool initialized = false;
protected void Application_BeginRequest()
{
if (initialized)
{
return;
}
lock (gate)
{
if (!initialized)
{
// We need to check if this is the first launch of the app and pre-create
// the admin role and the first user to be admin (still needs to register).
if (!Roles.GetAllRoles().Contains("Administrator"))
{
Roles.CreateRole("Administrator");
}
if (!Roles.GetUsersInRole("Administrator").Any())
{
Roles.AddUserToRole(RoleEnvironment.GetConfigurationSettingValue("DefaultAdminRoleUser"), "Administrator");
}
initialized = true;
}
}
}

I posted a version of the code with the fixes suggested by Peter to rapidshare here:
http://rapidshare.com/files/434649379/PhluffyFotos.zip
For those who don't want to fuss around fixing the dependencies etc.
Cheers,
Daniel

How can we get DynamicData working with EFPocoAdapter?

My team is hoping to use the EFPocoAdapter, but are also hoping to use the DynamicData tools with it but are having some issues.
We basically added a "Dynamic Data Entities Web Application" project to the EFPocoAdapter Northwind sample solution (I am using the latest version, 1.03), referenced the needed assemblies and then uncommented and edited the line in the Global.asax.cs file that registers a context with the MetaModel to look like this:
model.RegisterContext(typeof(NorthwindEF.NorthwindEntities),
new ContextConfiguration() { ScaffoldAllTables = true });
We get this error: "The context type 'NorthwindEF.NorthwindEntities' is not supported."
The question we have is, how can we make this a valid context or how else can we hack things to make this work for us?
Any pointers are appreciated, thanks.

You need to add the DynamicData.EFCodeFirstProvider, available from Nuget, just search for EFCodeFirstProvider. Then you use:
DefaultModel.RegisterContext(
new EFCodeFirstDataModelProvider(() => new NorthwindEF.NorthwindEntities()),
new ContextConfiguration() { ScaffoldAllTables = true });