Phone dialer issues in xamarin.plugins.messaging - visual-studio

Question

I am new for Xamarin and I just wanted to directly make a phone call from my Xamarin app.
I just wanted to include the hashtag(#) symbol in the phone number as a string, but it doesn't include the symbol when the program is executed.
Here is the code,
private void Button_Clicked(object sender, EventArgs e)
{
var phoneDialer = CrossMessaging.Current.PhoneDialer;
if (phoneDialer.CanMakePhoneCall)
phoneDialer.MakePhoneCall("*999#");
}
Any help would be appreciated!

Answer 1

Have a look at this thread:
Specifically, if a URL contains the * or # characters, the Phone
application does not attempt to dial the corresponding phone number.
There is also an answer in Swift which says iOS11 now allows us to call number with * or # , I translate it to C# and you can have a try with dependency service:
In shared Project:
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
DependencyService.Get<IPhoneCallTask>().DoPhoneCall();
}
}
public interface IPhoneCallTask
{
void DoPhoneCall();
}
In iOS Project:
[assembly: Dependency(typeof(phoneCall))]
namespace App591.iOS
{
class phoneCall : IPhoneCallTask
{
public void DoPhoneCall()
{
if (UIDevice.CurrentDevice.CheckSystemVersion(11, 0))
{
NSString number = new NSString("*111*12345#");
NSString encode = number.CreateStringByAddingPercentEncoding(NSUrlUtilities_NSCharacterSet.UrlHostAllowedCharacterSet);
NSString header = new NSString("tel://");
string tmp = string.Format("{0}{1}", encode, header);
NSString urlTemp = new NSString(tmp);
if (UIApplication.SharedApplication.CanOpenUrl(new Uri(urlTemp)))
{
UIApplication.SharedApplication.OpenUrl(new Uri(urlTemp));
}
}
}
}
}