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eliteKit: ProductViewModel.cs
using System.Windows.Input;
using System.Threading.Tasks;
using Xamarin.Forms;
using Acr.UserDialogs;
namespace DemoEliteKit.ViewModels
{
public class ProductViewModel : BaseViewModel
{
private string headerImage;
public string HeaderImage
{
get { return headerImage; }
set { headerImage = value; OnPropertyChanged(); }
}
private string footerImage;
public string FooterImage
{
get { return footerImage; }
set { footerImage = value; OnPropertyChanged(); }
}
private string productName;
public string ProductName
{
get { return productName; }
set { productName = value; OnPropertyChanged(); }
}
private int productStock;
public int ProductStock
{
get { return productStock; }
set { productStock = value; OnPropertyChanged(); }
}
private bool discontinued;
public bool Discontinued
{
get { return discontinued; }
set { discontinued = value; OnPropertyChanged(); }
}
private bool isTechnology;
public bool IsTechnology
{
get { return isTechnology; }
set { isTechnology = value; OnPropertyChanged(); }
}
private bool isFood;
public bool IsFood
{
get { return isFood; }
set { isFood = value; OnPropertyChanged(); }
}
private int saveProgress;
public int SaveProgress
{
get { return saveProgress; }
set { saveProgress = value; OnPropertyChanged(); }
}
private bool isValid;
public bool IsValid
{
get { return isValid; }
set { isValid = value; OnPropertyChanged(); }
}
public ICommand RegisterCommand { private set; get; }
public ICommand ValidateCommand { private set; get; }
public ProductViewModel()
{
RegisterCommand = new Command(async () => await Register());
ValidateCommand = new Command(() => Validate());
Task.Run(async () => await LoadData());
}
private async Task LoadData()
{
IsBusy = true;
IsValid = false;
await Task.Delay(5000);
HeaderImage = "xamarin.png";
FooterImage = "monkey.png";
IsBusy = false;
}
private void Validate()
{
IsValid = !string.IsNullOrEmpty(ProductName);
}
private async Task Register()
{
SaveProgress = 0;
for (int i = 0; i < 5; i++)
{
await Task.Delay(1000);
SaveProgress += 20;
}
var alert = new AlertConfig()
{
Message = $"Name: {ProductName} \nCategory: {(IsFood ? "Food" : IsTechnology ? "Technology" : "N/A" )} \nStock: {ProductStock} \nDiscontinued? {Discontinued}",
Title = "Product Details",
OkText = "Great!"
};
await UserDialogs.Instance.AlertAsync(alert);
}
}
}
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