This books shows all the steps necessary for the development of SPA (Single Page Application) applications with the Aurelia. With this book you will learn:

• How to create a project in Aurelia
• How to create Aurelia plugin
• Understand how the SystemJS imports works
• Using HTTP to connect to a server
• HttpClient
• FetchClient
• How to use Firebase
• Offline the app data
• Working with loopback
• ... 

Learning new development processes can be difficult, but switching to Agile doesn’t need to be complicated. Explore the theories behind Agile and learn how to make it work for you. In Agile Software Development Succinctly, author Stephen Haunts will guide you to a fuller understanding of Agile, its advantages and disadvantages, and how to get the most out of it. 

How to Convert Your Existing WinForms/WPF Project to .NET Core?  

AspNetCore.Unobtrusive.Ajax 

Unobtrusive Ajax Helpers (like MVC5 Ajax.BeignForm and Ajax.ActionLink) for ASP.NET Core 

Features

• Works with Upload file.
• Works with [AntiForgeryTokenValidation].
• Has [AjaxOnly] attribute to limit actions.
• Has httpRequest.IsAjaxRequest() extension method to check request is ajax and decide return PartialView or JSON result.
• Additional overloads for ease of use.
• Adds necessary JS script automatically when you use a Ajax Helpers and remove JS script when you no longer use it (Optional - is by default).
• Uses CDN url instead of Embedded script (Optional - isn't by default). 

@typeparam T
@inherits InputBase<T>

    protected override bool TryParseValueFromString(
        string? value,
        [MaybeNullWhen(false)] out T result,
        [NotNullWhen(false)] out string? validationErrorMessage)
    {
      // ...
    }

    protected override string FormatValueAsString(T? value)
    {
      // ...
    }

<link href="_content/BlazorPersianJavaScriptDatePicker.Lib/css/PersianDatePicker.css" rel="stylesheet"/>
<script src="_content/BlazorPersianJavaScriptDatePicker.Lib/js/PersianDatePicker.js?v=1"></script>

@using BlazorPersianJavaScriptDatePicker.Lib

@typeparam T
@inherits InputBase<T>

<div>
    <span style="cursor:pointer"
          onclick="PersianDatePicker.Show(document.getElementById('@ElementId'), '@Today')">
        📅
    </span>
    <input
        @attributes="@AdditionalAttributes"
        type="text" dir="ltr"
        @ref="ElementReference"
        name="@ElementId" id="@ElementId"
        autocapitalize="off" autocorrect="off" autocomplete="off"
       
        value="@EnteredValue"
        @oninput="OnInput"/>

    @if (ValueExpression is not null)
    {
        <ValidationMessage For="@ValueExpression"/>
    }
</div>

<script src="_content/BlazorPersianJavaScriptDatePicker.Lib/js/activateDatePicker.js?v=1"></script>

public partial class PersianDatePicker<T> : IDisposable
{
    private bool _isDisposed;
    private DotNetObjectReference<PersianDatePicker<T>>? _objectReference;
    private string ElementId { get; } = Guid.NewGuid().ToString("N");
    private ElementReference? ElementReference { set; get; }
    private string Today { get; } = DateTime.Now.ToShortPersianDateString();

    [Inject] private IJSRuntime JsRuntime { set; get; } = default!;

    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            _objectReference = DotNetObjectReference.Create(this);
            await JsRuntime.InvokeVoidAsync("activateDatePicker.enableDatePicker", ElementReference, _objectReference);
            EnteredValue = CurrentValueAsString;
            StateHasChanged();
        }
    }

    protected override void Dispose(bool disposing)
    {
        base.Dispose(disposing);
        if (!_isDisposed)
        {
            try
            {
                _objectReference?.Dispose();
            }
            finally
            {
                _isDisposed = true;
            }
        }
    }
}

[JSInvokable]
public void OnInputFieldChanged(string? value)

public partial class PersianDatePicker<T> : IDisposable
{
    private string? _enteredValue;

    private string? EnteredValue
    {
        set => _enteredValue = value;
        get => UsePersianNumbers ? _enteredValue.ToPersianNumbers() : _enteredValue;
    }

    [Parameter] public bool UsePersianNumbers { set; get; }

    [Parameter] public string ParsingErrorMessage { get; set; } = "لطفا در ورودی {0} تاریخ شمسی معتبری را وارد نمائید.";

    [Parameter] public int BeginningOfCentury { set; get; } = 1400;

    private void OnInput(ChangeEventArgs e)
    {
        SetCurrentValue(e.Value as string);
    }

    private void SetCurrentValue(string? value)
    {
        EnteredValue = value;
        CurrentValueAsString = value;
    }

    [JSInvokable]
    public void OnInputFieldChanged(string? value)
    {
        SetCurrentValue(value);
    }

    protected override void OnInitialized()
    {
        base.OnInitialized();
        SanityCheck();
    }

    protected override bool TryParseValueFromString(
        string? value,
        [MaybeNullWhen(false)] out T result,
        [NotNullWhen(false)] out string? validationErrorMessage)
    {
        validationErrorMessage = string.Format(CultureInfo.InvariantCulture, ParsingErrorMessage, DisplayName);
        if (!value.TryParsePersianDateToDateTimeOrDateTimeOffset(out result, BeginningOfCentury))
        {
            return false;
        }

        if (result is null)
        {
            throw new InvalidOperationException(validationErrorMessage);
        }

        validationErrorMessage = null;
        return true;
    }

    protected override string FormatValueAsString(T? value)
    {
        return !string.IsNullOrWhiteSpace(EnteredValue) ? EnteredValue : value.FormatDateToShortPersianDate();
    }

    private void SanityCheck()
    {
        if (!Value.IsDateTimeOrDateTimeOffsetType())
        {
            throw new InvalidOperationException(
                "The `Value` type is not a supported `date` type. DateTime, DateTime?, DateTimeOffset and DateTimeOffset? are supported.");
        }
    }

    // ...
}

using System.ComponentModel.DataAnnotations;

namespace BlazorPersianJavaScriptDatePicker.ViewModels;

public class InputPersianDateViewModel
{
    [Required] public string Name { set; get; } = default!;

    [Required] public DateTime BirthDayGregorian { set; get; } = DateTime.Now.AddYears(-40);

    public DateTime? LoginAt { set; get; } = DateTime.Now.AddMinutes(-2);

    [Required] public DateTimeOffset LogoutAt { set; get; }

    public DateTimeOffset? RegisterAt { set; get; } = DateTimeOffset.Now.AddMinutes(-10);
}

<EditForm Model="Model" OnValidSubmit="DoSave">
    <DataAnnotationsValidator/>

    <div>
        <label>تاریخ تولد</label>
        <div>
            <PersianDatePicker
                @bind-Value="Model.BirthDayGregorian"
                UsePersianNumbers="false"
               />
        </div>
    </div>

    <button type="submit">ارسال</button>
</EditForm>

<pages validaterequest="false"></pages>

[Required]
[StringLength(50)]
[RegularExpression(@"^[a-zA-Z0-9 -']*$")]
public string Name {get;set;}