Develop Reference

Xamarin Project works fine in Android, throws "405" errors in UWP when calling WCF

I have an App that works fine when I set Android as the startup project but throws an error when I have UWP as the startup project. I have found, by commenting out code here and there, that the error is occurring when I make a call to my WCF. The second line below is causing the error:
_client = new Service1Client(binding, Endpoint);
var result = _client.CreateUser(Txt_UserName.Text , Txt_Password.Text);
The blah error message I can get so far is:
Unhandled exception at 0x0878DC3C (Windows.UI.Xaml.dll) in MyApp.UWP.exe:
0xC000027B: An application-internal exception has occurred (parameters:
0x172E2738, 0x00000006). occurred
Also apparently this was running right before it crashed:
#define BEGIN_DELEGATE_MAP(CLASS)\
ref class delegate_proxy_type;\
msclr::delegate_map::internal::delegate_proxy_factory<CLASS> m_delegate_map_proxy;\
\
ref class delegate_proxy_type\
{\
CLASS* m_p_native_target;\
public:\
delegate_proxy_type(CLASS* pNativeTarget) : m_p_native_target(pNativeTarget) {}\
void detach() { m_p_native_target = NULL; }
#define EVENT_DELEGATE_ENTRY(MEMBER,ARG0,ARG1)\
void MEMBER(ARG0 arg0,ARG1 arg1)\
{\
if(m_p_native_target == NULL)\
throw gcnew System::ArgumentNullException("Delegate call failed: Native sink was not attached or has already detached from the managed proxy (m_p_native_target == NULL). Hint: see if native sink was destructed or not constructed properly");\
\
m_p_native_target->MEMBER(arg0,arg1);\
}
#define END_DELEGATE_MAP()\
};
#define MAKE_DELEGATE(DELEGATE,MEMBER)\
gcnew DELEGATE(m_delegate_map_proxy.get_proxy(this),&delegate_proxy_type::MEMBER)
To further narrow down the cause of this error I created a simple standalone UWP app and I am trying to connect it to a WCF. On this program, I am getting this error message when I make the WCF method call:
'The remote server returned an unexpected response: (405) Method Not Allowed.'
Any ideas on the cause of this error? Thanks in Advance.

Per #Xavier:
Changing the settings in the app manifest solved my problem! It was that simple. Thanks.

How to get a the value of "background-color" property of an element that I have in my NATIVE App

I'm developing a test code in c# (v3.0.02 of Appium) and I need to get the value of "background-color" property of an element that I have in my NATIVE App.
Here is a part of the code:
ReadOnlyCollection obj = driver.FindElementsByName("lblProtocolo");
for(int i=0;i<obj.Count;i++)
{
var str = obj[i].GetCssValue("background-color");
}
but is throwing an exception:
Test method ASEXamarin.Shared.Tests.TelaInicial.TesteRows threw exception:
System.NotImplementedException: Not yet implemented. Please help us: http://appium.io/get-involved.html
There is any form to get this property in NATIVE Apps?
There is a related post in:
Appium Android UI testing - how to verify the style attribute of an element?

ArgumentException on MediaElement AreTransportControlsEnabled property set (Windows Phone 8.1)

I am developing Windows Phone application and I got a really weird exception when I set my MediaElement object property AreTransportControlsEnabled to some value:
_mediaElement.IsFullWindow = fullScreen;
_mediaElement.AreTransportControlsEnabled = fullScreen;
This is what that I get:
Exception thrown: 'System.ArgumentException' in MyApp.ni.EXE WinRT
information: The value cannot be infinite or Not a Number (NaN).
Additional information: The parameter is incorrect.
The value cannot be infinite or Not a Number (NaN).
How boolean value can be a NAN or in finite and why it's allways throws the exception on the AreTransportControlsEnabled boolean property and not on IsFullWindow?
This issue is still hunting me...2 months gone now...

C# VSTO Addin Exception With CurrentItem

When trying to obtain the current item with focus in an outlook 2013 addin I get this exception: An exception of type 'System.MissingMemberException' occurred in System.Dynamic.dll but was not handled in user code
Additional information: Error while invoking [PROPERTYGET, DISPID(0)].
The code throwing the exception is this:
Inspector curObj = Globals.ThisAddIn.Application.ActiveInspector();
Object curItem = curObj.CurrentItem();
The second line throws the exception. The addin is launched from a button on the ribbon when in the create message window.
What is the proper way to access the current item as I think I'm doing it wrong which is causing the issue, since it's saying CurrentItem is not a member. The VBA code examples do it similar to this, but in C# CurrentItem doesn't seem to work the same.

CurrentItem is a property, not a method.

Emgu.CV Not supported Uri format

I have some program on my 1st pc (everytinh works fine)
but when I copy my full project to another PC and try to run application I get this error :
A first chance exception of type 'System.ArgumentException' occurred in mscorlib.dll
Additional information: Formaty identyfikatorów URI nie są obsługiwane.
If there is a handler for this exception, the program may be safely continued.
and than:
A first chance exception of type 'System.BadImageFormatException' occurred in Emgu.CV.dll
Additional information: Próbowano załadować program w niepoprawnym formacie. (Wyjątek od HRESULT: 0x8007000B)
If there is a handler for this exception, the program may be safely continued.
in this code:
BackgroundSubtractorMOG2 pMog11 = new BackgroundSubtractorMOG2(0, 80, false);
I have really have no idea what to do with this. What is the problem with Emgu.CV in the 2nd pc?