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public class HtmlBuilder {
    public static final String COLOR = "[color]";

    public enum Type{
        BOLD("strong"),
        ITALIC("em"),
        COLOR("font color=\"#"+ HtmlBuilder.COLOR + "\""),
        SMALL("small")
        ;
        public final String stringType;

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System directories

Method	Result
Environment.getDataDirectory()	/data
Environment.getDownloadCacheDirectory()	/cache
Environment.getRootDirectory()	/system

External storage directories

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1. Go to %LOCALAPPDATA%\Xamarin

2. If it doesn't already exist, create a new folder named after the support library NuGet package, e.g. Xamarin.Android.Support.v4

3. Repeat for every support library package in your project:

4. Open the Xamarin Android SDK Manager and download the Android Support Repository (under Tools > Extras):

5. Go to [Android SDK location]\extras\android\m2repository\com\android\support and open the directory for the support library you need

6. Find the correct version and copy the entire folder to directory you created in step 2. The correct version is the one that matches or is nearest to the NuGet package version. For example, if the package version is 23.4.0.1 the support library version would be 23.4.0. If you did not create a folder in

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[HttpPost]
public HttpResponseMessage CreateCustomer(string name, string billingInfo)
{
    Result<BillingInfo> billingInfoResult = BillingInfo.Create(billingInfo);
    Result<CustomerName> customerNameResult = CustomerName.Create(name);

    return Result.Combine(billingInfoResult, customerNameResult)
        .OnSuccess(() => _paymentGateway.ChargeCommission(billingInfoResult.Value))
        .OnSuccess(() => new Customer(customerNameResult.Value))
        .OnSuccess(

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static void Main(string[] args)
{
    var breakFast = await Task.Run( () => MakeBreakFast());
    // once here I know breakfast is ready
    Eat(breakFast);
}
private static async Task<BreakFast> MakeBreakFast()
{
    var taskToastBread = ToastBreadAsync();
    // do not await. As soon as the procedure awaits come back to do the next statement:

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static void Main(string[] args)
{
    var result = await SumAsync(1,2);
    Console.WriteLine(result);
}

public static int Sum(int a, int b) => a + b;

public static Task<int> SumAsync(int a, int b) => Task.Run(() => Sum(a, b));

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static void async Main(string[] args)
{
    await FireAndForget();
    Console.WriteLine("Caller");
    
    FireAndForget();
    Console.WriteLine("Caller");
}

public static async Task FireAndForget()

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static void async Main(string[] args)
{
    try
    {
        await ThrowExceptionAfterAsync();
    }
    catch(Exception e)
    {
        //Gonna catch SHU
        Console.WrileLine(e.Message);//SHU

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static async void FireAndForget(this Task task)
{
   try
   {
        await task;
   }
   catch (Exception e)
   {
       // log errors
   }

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using System.Threading;

namespace System.Globalization
{
    public static class CultureInfo_Setters
    {
        public static void SetForApplication(this CultureInfo @this)
        {
            @this.SetForCurrentThread();
            @this.SetForThreadPoolThreads();