WebCal | web calculator that demonstrates state pattern

Using your code, I'm able to cast with no problem, even with generics. Here's an example:

1. Please refer to the RFC5545 shared calendar (ics)n specification https://tools.ietf.org/html/rfc5545 for the format of contents of the ics calendar files.

2. Note that webcal is an unofficial apple protocol for ics calendar files. Google and other calendar providers use https for their shared calendars. These can be hosted on most servers. An ics url is literally just a file (or active url). If you persist in using webcal protocol only, some calendar applications may not accept so I strongly suggest the official 'alternative'.

From page 5 of the specification

"The iCalendar format is suitable as an exchange format between
applications or systems. The format is defined in terms of a MIME
content type. This will enable the object to be exchanged using
several transports, including but not limited to SMTP, HTTP,....."

It works kind of... Instead of getting id=1, it gets id=0. I think it gets the id of the object count from the json. How does this work and why can't I parse multiple objects at once and return it into an array list or something?

JSON (or at least GSON) always expects a string as key (as far as I know). What comes behind the String does not matter, as long as it conforms to the JSON standard.

What you mention would be possible, if you declared something like

{"persons" : [ + rest of your content + ]}, however I'm unsure whether you could automatically parse that into a List.

I solved it at the end by switching to system.net.httpclient. That way I still repect any custom proxy-settings and also avoid the above mentioned 64kb-limit in any error-response. Here a sample how to use it:

The annotation @WebServiceRef is used with java EE not SE

So in order to use the service from java SE you need to generate the client for the service from the wsdl

see this tutorial about wsimport : Java Brains wsimport tool And this one too will help : Calling the service from generated client

Just encode the unaccepted characters, for example: '[' = '%5B'

First i don't think it is necessary to use private event EventHandler loadingAgents.Then you get Agents is an asynchronous operation,so MainPage = new MainPage(); has been executed when the method is called(at this time, the Agents may be null).And in general we don't call asynchronous tasks in the constructor to get the data,you could do it in the OnStart() method.

You could try to change like below :

Flip your logic and uppercase everything and then recursively lower case the values:

The problem is that Xamarin can't handle asynchronous await calls in the constructor and as such it will complete before the asynchronous call will.

In fact you need to be careful when calling asynchronous / long running functions in anything relating to the UI as you can end up with deadlocks or slow UI interaction if your trying to force usage of a result.

I would suggest that you change your code such that this function is called before you require it or at the very least don't allow any function that relies upon its results to run until it has done so.