MainPage.xaml.cs

namespace WeatherApp;

public partial class MainPage : ContentPage
{
	RestService _restService;

	public MainPage()
	{
		InitializeComponent();
		_restService = new RestService();
		BindingContext = new WeatherData();

    }

	async void OnGetWeatherButtonClicked(object sender,EventArgs e) {
		
        if (!string.IsNullOrWhiteSpace(_cityEntry.Text))
		{
            var _BindingContext = BindingContext as WeatherData;
            if (!_BindingContext.IsEnabled)
            {
                DisplayAlert("", "Please Wait", "close");
                return;
            }
            _BindingContext.IsEnabled = false;

			WeatherData weatherData = await
				_restService.
				GetWeatherData(GenerateRequestURL(Api.Endpoint));
            weatherData.IsEnabled = true;
            BindingContext = weatherData;
		}
		else
		{
			DisplayAlert("", "Please enter the city","close");
		}
	}

	string GenerateRequestURL(string endPoint) {
		string requestUri = endPoint;
		requestUri += $"?query={_cityEntry.Text}";
		requestUri += $"&unit={Api.unit}";
        requestUri += $"&version=today";
        requestUri += $"&language={Api.Language}";
        requestUri += $"&appid={Api.AppId}"; 
		requestUri += $"&appsecret={Api.Appsecret}";
		return requestUri;
	}
}