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using Definition.Interfaces;
using Mobile.ViewModel;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;

namespace Mobile.View

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// Pass parameter to view model 
var model = page.BindingContext as BaseViewModel; 
if (model != null) 
    await model.OnNavigated(parameter); 

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<Button Command="{Binding LoginCommand}" Text="Login" />

        private RelayCommand _loginCommand;
        public RelayCommand LoginCommand
        {
            get
            {
                return _loginCommand
                       ?? (_loginCommand = new RelayCommand(
                           async () =>

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        private LoginModel _model = null;
        public LoginModel Model
        {
            get
            {
                return _model;
            }
            set
            {
                if (value != _model)

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        public string Username
        {
            get
            {
                return _model.Username;
            }
            set
            {
                _model.Username = value;

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var uniqueKey = System.Guid.NewGuid().ToString();
var model = SimpleIoc.Default.GetInstance<LoginModel>(uniqueKey);

// Must remmeber to cleanup, otherwise all new instances are cached
SimpleIoc.Default.Unregister(uniqueKey);

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public partial class BindablePicker : Picker
    {

        public BindablePicker()
        {
            InitializeComponent();
            this.SelectedIndexChanged += OnSelectedIndexChanged;
        }

        public static BindableProperty ItemsSourceProperty =

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public interface ISQLite {

        void CloseConnection();
		    SQLiteAsyncConnection GetAsyncConnection();
		    void DeleteDatabase();

	}

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public class SQLite_WinPhone : ISQLite
    {

        private static SQLiteConnectionWithLock _conn;

        public SQLite_WinPhone() { }

        private static Object _connectionLock = new Object();

        private string DatabaseName = "DatabaseName.db3";

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public class SQLite_Android : ISQLite
    {

        private SQLiteConnectionWithLock _conn;

        public SQLite_Android()
        {
        }