public async static Task OperateAsyncMethod()
{
AsyncMethods asyncM1 = new AsyncMethods();
await asyncM1.RunAsyncMethod();
System.Console.WriteLine("In C# 7.1, To use async method");
System.Console.WriteLine($"Main Method execution started at {System.DateTime.Now}");
await Task.Delay(2000);
System.Console.WriteLine($"Main Method execution ended at {System.DateTime.Now}");
}
public void ChainMethodsAsynchronously()
{
int result = 0;
AsyncMethods.AddTwoNumbersAsync(5, 10)
.SelectMany(aPlusB => AsyncMethods.MultiplyByFiveObservable(aPlusB))
.Subscribe(x => result = x);
// This isn't a good idea in general, see chapter 9!
Thread.Sleep(1000);
Assert.AreEqual(75, result);
}
public async Task <IActionResult> GetPageLengthAsync()
{
var length1 = await AsyncMethods.GetPageLength();
var length2 = await AsyncMethods.GetPageLengthAsync();
ViewBag.Title = "Async Demo";
var message = new[]
{
$"Page length. First method: {length1}",
$"Page length. Second method: {length2}",
};
return(View("NextPage", message));
}
private async Task InvokeActions()
{
try {
while (!ActionList.Items.IsEmpty)
{
if (ActionList.Items[0] is ActionConfig action)
{
if (double.IsNaN(action.range1))
{
await AsyncMethods.DriveAsync(
action.v, action.w,
TimeSpan.FromSeconds(action.range0),
x => _windowContext.Progress = x,
e => _windowContext.ErrorInfo = e.Message
).ConfigureAwait(true);
}
else
{
await AsyncMethods.DriveAsync(
action.v, action.w,
action.range0, action.range1,
x => _windowContext.Progress = x,
e => _windowContext.ErrorInfo = e.Message
).ConfigureAwait(true);
}
}
else if (ActionList.Items[0] is RudderControlConfig rudderControl)
{
await AsyncMethods.AdjustRudderAsync(
rudderControl.value,
x => _windowContext.Progress = x,
e => _windowContext.ErrorInfo = e.Message
).ConfigureAwait(true);
}
ActionList.Dispatch(it => {
try { it.Items.RemoveAt(0); } catch (ArgumentOutOfRangeException) { }
});
}
} finally {
task = null;
}
}
public void SetUp()
{
_methods = new AsyncMethods();
}
public async Task <ViewResult> Index()
{
long?length = await AsyncMethods.GetPageLength();
return(View(new string[] { $"Length : {length}" }));
}
//public IActionResult Index()
//{
// // var productsString = Product.GetProducts().Select(product => string.Format($"Name = {product?.Name ?? "No Product"} In stock = {product?.InStock.ToString() ?? "No Product"}"));
// // new way to initialise dictionaries
// //var products = new Dictionary<string, Product>
// //{
// // ["Kayak1"] = new Product { Name = "Kayak", Price = 275m},
// // ["Lifejacket1"] = new Product { Name = "LifeJacket", Price = 48.95m }
// //};
// // var totalPrice = new string[] { Product.GetProducts().TotalPrice().ToString() };
// var minimumPrice = 50;
// // bool filterByPrice(Product product) { return product.Price > minimumPrice; }
// // local function
// bool filterByPrice(Product product) => product?.Price > minimumPrice;
// // use of null conditional operator and coalesce operator together pretty powerful!
// bool filterByName(Product product) => product?.Name?.ToLower().StartsWith("ka") ?? false;
// var shoppingCart = new ShoppingCart
// {
// Products = Product.GetProducts()
// };
// // var totalPrice = new string[] { shoppingCart.TotalPrice().ToString() };
// // var filteredProducts = shoppingCart.FilterBy(filterByPrice);
// // var filteredProducts = shoppingCart.FilterBy(filterByName);
// // return View("Index", new string[] { filteredProducts.TotalPrice().ToString() });
// return View("Index", new string[] { pageLengthTask.ToString() });
// }
public async Task <IActionResult> Index()
{
var pageLength = await AsyncMethods.GetPageLength();
return(View("Index", new string[] { $"pageLength={pageLength}" }));
}
//public IActionResult Index()
//{
// //lambda func
// bool FilterByPriceUsingLambda(Product p)
// {
// return ((p?.Price ?? 0) >= 20);
// }
// ShoppingCart cart = new ShoppingCart()
// {
// Products = Product.GetProducts()
// };
// Product[] productArray =
// {
// new Product {Name = "Kayak", Price = 120M},
// new Product {Name = "Lifejacket", Price = 32.44M},
// new Product { Name = "Toyota Rav4", Price = 900.40M}
// };
// decimal totalProductArray = productArray.TotalPrice(); // extension applies to array list
// decimal totalCart = cart.TotalPrice();
// decimal lambdaTotal = productArray.FilterByPriceLambda(FilterByPriceUsingLambda).TotalPrice(); //using lambda
// decimal yieldedTotalPrice = productArray.FilterByPrice(700).TotalPrice();
// return View("Index", new string[] { $"Total filter: {yieldedTotalPrice:C2}, Lambda total: {lambdaTotal:C2}"});
// //return View("Index", new string[] { $"Cart Total: {totalCart:C2}", $"Array Total: {totalProductArray:C2}"});
////}
public async Task <ViewResult> Index()
{
long?httpCallLength = await AsyncMethods.GetPageLength();
return(View("Index", new string[] { $"length from http call: {httpCallLength}" }));
}
public MainPage()
{
this.InitializeComponent();
_methods = new AsyncMethods();
_methods.StateEvent += UpdateStateHandler;
}
private void ThrottleInnerTest()
{
AsyncMethods.Throttle(() => _throttleCount--, 10);
}
private void DeBounceInnerTest()
{
AsyncMethods.DeBounce(() => _deBounceCount--, 10, true);
}
