public class ProductViewModel
{
public int ProductId { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public string ImageUrl { get; set; }
public decimal UnitPrice { get; set; }
} public record ProductDTO(int Id, string Name, string Description);
public record ProductDTO
{
public int Id { get; init; }
public string Name { get; init; }
}
var dto = new ProductDTO { Id = 1, Name = "some name" }; public class Product : DataObject<Product>
{
public Product(int id)
{
Id = id;
InitializeFromDatabase();
}
private void InitializeFromDatabase()
{
DataHelpers.LoadFromDatabase(this);
}
public int Id { get; private set; }
// other properties and methods
} public class Product
{
public Product(int id)
{
Id = id;
}
private Product()
{
// required for EF
}
public int Id { get; private set; }
// other properties and methods
} 
using System;
namespace MyVerboseApp
{
public class Program
{
public static void Main(string[] args)
{
Console.WriteLine("Hello World!");
}
}
} // See https://aka.ms/new-console-template for more information
Console.WriteLine("Hello, World!"); dotnet new console --framework net5.0 --target-framework-override net6.0
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
- <TargetFramework>net5.0</TargetFramework>
+ <TargetFramework>net6.0</TargetFramework>
</PropertyGroup>
</Project> public class User : IdentityUser<Guid, UserLogin, UserRole, UserClaim>
public Guid GetCurrentUserId()
{
return _identity.GetUserId<Guid>();
} The type 'System.Guid' cannot be used as type parameter 'T' in the generic type or method 'Microsoft.AspNet.Identity.IdentityExtensions.GetUserId<T>(System.Security.Principal.IIdentity)'. There is no boxing conversion from 'System.Guid' to 'System.IConvertible'
public class UserListViewComponent : ViewComponent
{
private readonly UserRepository repository;
public UserListViewComponent(UserRepository repository)
{
this.repository = repository;
}
public IViewComponentResult Invoke()
{
var users = repository.GetUsers().Take(10).ToList();
return View(model: users);
}
} @model IList<User>
@foreach (var user in Model)
{
<li>
<a asp-controller="UserManager" asp-action="Edit" asp-route-id="@user.Id">@user.Name</a>
</li>
}
<a class="btn btn-info" asp-controller="UserManager" asp-action="Index">More...</a> public class UserManagerController : Controller
{
private readonly UserRepository repository;
public UserManagerController(UserRepository repository)
{
this.repository = repository;
}
public ViewResult Index()
{
var users = repository.GetUsers().ToList();
return View(users);
}
public ViewResult Edit(int id)
{
var user = repository.GetUsers().FirstOrDefault(u => u.Id == id);
return View(user);
}
[HttpPost]
public IActionResult Edit(User user)
{
repository.Edit(user);
return RedirectToAction("Index", "Home");
}
} // Views/UserManager/Edit.cshtml
@model User
<div class="row">
<div class="col-md-8">
<form method="post">
<input type="hidden" asp-for="Id" />
<div class="form-group">
<label asp-for="Name"></label>
<input asp-for="Name" class="form-control"/>
</div>
<div class="form-group">
<label asp-for="LastName"></label>
<input asp-for="LastName" class="form-control"/>
</div>
<div class="form-group">
<label asp-for="Age"></label>
<input asp-for="Age" class="form-control"/>
</div>
<button type="submit" class="btn btn-primary">Save</button>
</form>
</div>
</div>
// Views/UserManager/Index.cshtml
@model IList<User>
<table class="table">
<tr>
<td>Id</td>
<td>Name</td>
<td>LastName</td>
<td>Age</td>
</tr>
@foreach (var user in Model)
{
<tr>
<td>@user.Id</td>
<td>@user.Name</td>
<td>@user.LastName</td>
<td>@user.Age</td>
</tr>
}
</table> [ViewComponent(Name = "UserList")]
public class UserManagerController : Controller
{
private readonly UserRepository repository;
public UserManagerController(UserRepository repository)
{
this.repository = repository;
}
public ViewResult Index()
{
var users = repository.GetUsers().ToList();
return View(users);
}
public ViewResult Edit(int id)
{
var user = repository.GetUsers().FirstOrDefault(u => u.Id == id);
return View(user);
}
[HttpPost]
public IActionResult Edit(User user)
{
repository.Edit(user);
return RedirectToAction("Index", "Home");
}
public IViewComponentResult Invoke()
{
var users = repository.GetUsers().Take(10).ToList();
return new ViewViewComponentResult
{
ViewData = new ViewDataDictionary<IList<User>>(ViewData, users)
};
}
} UserManagerController: /Views/UserManager/Edit.cshtml /Views/UserManager/Index.cshtml UserListViewComponent: /Views/Shared/Components/UserList/Default.cshtml
"C:\Program Files\Git\usr\bin\openssl.exe" genrsa -out private.key 2048 "C:\Program Files\Git\usr\bin\openssl.exe" req -new -x509 -key private.key -out publickey.cer -days 1398 "C:\Program Files\Git\usr\bin\openssl.exe" pkcs12 -export -out idp.pfx -inkey private.key -in publickey.cer
private static X509Certificate2 loadCertificateFromFile(string filePath, string password)
{
// NOTE:
// You should check out the identity of your application pool and make sure
// that the `Load user profile` option is turned on, otherwise the crypto susbsystem won't work.
// For decryption the certificate must be in the certificate store. It's a limitation of how EncryptedXml works.
using (var store = new X509Store(StoreName.My, StoreLocation.CurrentUser))
{
store.Open(OpenFlags.ReadWrite);
store.Add(new X509Certificate2(filePath, password, X509KeyStorageFlags.Exportable));
}
return new X509Certificate2(
filePath,
password,
keyStorageFlags: X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet
| X509KeyStorageFlags.Exportable);
} services
.AddDataProtection()
.SetDefaultKeyLifetime(...)
.SetApplicationName(...)
.ProtectKeysWithCertificate(loadCertificateFromFile("path ...", "123")); using System;
using System.Windows.Input;
namespace Common.Mvvm
{
public class DelegateCommand<T> : ICommand
{
readonly Func<T, bool> _canExecute;
readonly Action<T> _executeAction;
public DelegateCommand(Action<T> executeAction, Func<T, bool> canExecute = null)
{
if (executeAction == null)
throw new ArgumentNullException("executeAction");
_executeAction = executeAction;
_canExecute = canExecute;
}
public event EventHandler CanExecuteChanged
{
add { if (_canExecute != null) CommandManager.RequerySuggested += value; }
remove { if (_canExecute != null) CommandManager.RequerySuggested -= value; }
}
public bool CanExecute(object parameter)
{
return _canExecute == null || _canExecute((T)parameter);
}
public void Execute(object parameter)
{
_executeAction((T)parameter);
}
}
} public DelegateCommand<object> DoCopyAllLines { set; get; } DoCopyAllLines = new DelegateCommand<object>(CopyAllLines, info => true);
private void CopyAllLines(object data)
{
// ...
} namespace FiltersSample.Filters
{
public class SampleActionFilter : IActionFilter
{
public void OnActionExecuting(ActionExecutingContext context)
{
// انجام کاری پیش از اجرای اکشن متد
}
public void OnActionExecuted(ActionExecutedContext context)
{
// انجام کاری پس از اجرای اکشن متد
}
}
} namespace FiltersSample.Filters
{
public class SampleAsyncActionFilter : IAsyncActionFilter
{
public async Task OnActionExecutionAsync(
ActionExecutingContext context,
ActionExecutionDelegate next)
{
// انجام کاری پیش از اجرای اکشن متد
await next();
// انجام کاری پس از اجرای اکشن متد
}
}
} using Microsoft.AspNetCore.Mvc.Filters;
namespace FiltersSample.Filters
{
public class AddHeaderAttribute : ResultFilterAttribute
{
private readonly string _name;
private readonly string _value;
public AddHeaderAttribute(string name, string value)
{
_name = name;
_value = value;
}
public override void OnResultExecuting(ResultExecutingContext context)
{
context.HttpContext.Response.Headers.Add(
_name, new string[] { _value });
base.OnResultExecuting(context);
}
}
} [AddHeader("Author", "DNT")]
public class SampleController : Controller
{
public IActionResult Index()
{
return Content("با فایرباگ هدر خروجی را بررسی کنید");
}
} public void ConfigureServices(IServiceCollection services)
{
services.AddMvc(options =>
{
options.Filters.Add(typeof(SampleActionFilter)); // by type
options.Filters.Add(new SampleGlobalActionFilter()); // an instance
});
} [MyFilter(Name = "Method Level Attribute", Order=-1)]
[ServiceFilter(typeof(AddHeaderFilterWithDi))]
public IActionResult Index()
{
return View();
} services.AddScoped<AddHeaderFilterWithDi>();
System.InvalidOperationException: No service for type 'FiltersSample.Filters.AddHeaderFilterWithDI' has been registered.
[TypeFilter(typeof(AddHeaderAttribute), Arguments = new object[] { "Author", "DNT" })]
public IActionResult Hi(string name)
{
return Content($"Hi {name}");
} using Microsoft.AspNetCore.Mvc.Filters;
using Microsoft.Extensions.Logging;
namespace Core1RtmEmptyTest.StartupCustomizations
{
public class CustomExceptionLoggingFilterAttribute : ExceptionFilterAttribute
{
private readonly ILogger<CustomExceptionLoggingFilterAttribute> _logger;
public CustomExceptionLoggingFilterAttribute(ILogger<CustomExceptionLoggingFilterAttribute> logger)
{
_logger = logger;
}
public override void OnException(ExceptionContext context)
{
_logger.LogInformation($"OnException: {context.Exception}");
base.OnException(context);
}
}
} public void ConfigureServices(IServiceCollection services)
{
services.AddMvc(options =>
{
options.Filters.Add(typeof(CustomExceptionLoggingFilterAttribute)); public void Configure(ILoggerFactory loggerFactory)
{
loggerFactory.AddDebug(minLevel: LogLevel.Debug); public IActionResult GetData()
{
throw new Exception("throwing an exception!");
} 
در این قسمت به پیاده سازی و توضیح مدل‌های انجمن خواهیم پرداخت. قبل از شروع پیشنهاد می‌کنم مقالات قبلی را مطالعه کنید.
همکاران این قسمت:
سلمان معروفی
سید مجتبی حسینی
پیشنیاز این قسمت:
مقالات SQL Antipattern
سعی کردیم چندین پروژه‌ی سورس باز را هم بررسی کنیم و در نهایت کاملترین و بهترین روش را پیاده سازی کنیم. NForum ، MyBB ، MVCForum ، بخش CMS مربوط به SmartStore و ساختار دیتابیس StackOverFlow ازجمله‌ی آنها هستند.
/// <summary>
/// Represents the Forum
/// </summary>
public class Forum
{
#region Properties
/// <summary>
/// gets or sets Id that Identify Forum
/// </summary>
public virtual long Id { get; set; }
/// <summary>
/// gets or sets Forum's title
/// </summary>
public virtual string Title { get; set; }
/// <summary>
/// gets or sets Description of forum
/// </summary>
public virtual string Description { get; set; }
/// <summary>
/// gets or sets value indicating Custom Slug
/// </summary>
public virtual string SlugUrl { get; set; }
/// <summary>
/// gets or sets order for display forum
/// </summary>
public virtual long DisplayOrder { get; set; }
/// <summary>
/// Indicating This Forum is Active or Not
/// </summary>
public virtual bool IsActive { get; set; }
/// <summary>
/// Indicating This Forum is Close or Not
/// </summary>
public virtual bool IsClose { get; set; }
/// <summary>
/// Indicating This Forum is Private or Not
/// </summary>
public virtual bool IsPrivate { get; set; }
/// <summary>
/// sets or gets password for login to Private forums
/// </summary>
public virtual string PasswordHash { get; set; }
/// <summary>
/// sets or gets depth of forum in tree structure of forums
/// </summary>
public virtual int Depth { get; set; }
/// <summary>
/// sets or gets Count of posts That they are Approved
/// </summary>
public virtual long ApprovedPostsCount { get; set; }
/// <summary>
/// sets or gets Count of topics That they are Approved
/// </summary>
public virtual long ApprovedTopicsCount { get; set; }
/// <summary>
/// Gets or sets the id of last topic
/// </summary>
public virtual long LastTopicId { get; set; }
/// <summary>
/// gets or sets date of creation of last topic
/// </summary>
public virtual DateTime? LastTopicCreatedOn { get; set; }
/// <summary>
/// gets or sets title of last topic
/// </summary>
public virtual string LastTopicTitle { get; set; }
/// <summary>
/// gets or sets creator of last topic
/// </summary>
public virtual string LastTopicCreator { get; set; }
/// <summary>
/// gets or sets id of creator that create last topic
/// </summary>
public virtual long LastTopicCreatorId { get; set; }
/// <summary>
/// Indicate in this Forum Moderate Topics Before Display
/// </summary>
public virtual bool ModerateTopics { get; set; }
/// <summary>
/// Indicate in this Forum Moderate Posts Before Dipslay
/// </summary>
public virtual bool ModeratePosts { get; set; }
/// <summary>
/// gets or sets Count of posts that they are UnApproved
/// </summary>
public virtual long UnApprovedPostsCount { get; set; }
/// <summary>
/// gets or sets Count of topics that they are UnApproved
/// </summary>
public virtual long UnApprovedTopicsCount { get; set; }
/// <summary>
/// gets or sets Rowversion
/// </summary>
public virtual byte[] RowVersion { get; set; }
/// <summary>
/// gets or sets icon name with size 200*200 px for snippet
/// </summary>
public virtual string SocialSnippetIconName { get; set; }
/// <summary>
/// gets or sets title for snippet
/// </summary>
public virtual string SocialSnippetTitle { get; set; }
/// <summary>
/// gets or sets description for snippet
/// </summary>
public virtual string SocialSnippetDescription { get; set; }
/// <summary>
/// gets or sets path for tree structure antipattern (1/3/4/23)
/// </summary>
public virtual string Path { get; set; }
/// <summary>
/// Indicate this forum inherit moderators from parent forum
/// </summary>
public virtual bool IsModeratorsInherited { get; set; }
/// <summary>
/// gets or set datetime that Last Post is Created In this forum. used for ForumTracking
/// </summary>
public virtual DateTime? LastPostCreatedOn { get; set; }
#endregion
#region NavigationProperties
/// <summary>
/// sets or gets identifier forum's parent
/// </summary>
public virtual long? ParentId { get; set; }
/// <summary>
/// sets or gets forum's parent
/// </summary>
public virtual Forum Parent { get; set; }
/// <summary>
/// sets or gets sub forums of forum
/// </summary>
public virtual ICollection<Forum> Children { get; set; }
/// <summary>
/// set or get topics of forum
/// </summary>
public virtual ICollection<ForumTopic> Topics { get; set; }
/// <summary>
/// get or set moderators of this forum
/// </summary>
public virtual ICollection<ForumModerator> Moderators { get; set; }
/// <summary>
/// get or set Subscriptions List
/// </summary>
public virtual ICollection<User> Subscribers { get; set; }
/// <summary>
/// get or set Announcements Collection of this Forum
/// </summary>
public virtual ICollection<ForumAnnouncement> Announcements { get; set; }
/// <summary>
/// get or set Trackers List Of this Forum
/// </summary>
public virtual ICollection<ForumTracker> Trackers { get; set; }
/// <summary>
/// get or set Posts List that Posted in this forum for increase Performance for get Posts Count
/// </summary>
public virtual ICollection<ForumPost> Posts { get; set; }
/// <summary>
/// get or set
/// </summary>
public virtual ICollection<ForumTopicTracker> TopicTrackers { get; set; }
#endregion /// <summary>
/// Represents The Moderator For Forum
/// </summary>
public class ForumModerator
{
#region NavigationProperties
/// <summary>
/// gets or sets Forum
/// </summary>
public virtual Forum Forum { get; set; }
/// <summary>
/// gets or sets identifier of forum
/// </summary>
public virtual long ForumId { get; set; }
/// <summary>
/// gets or sets user that moderate forum
/// </summary>
public virtual User Moderator { get; set; }
/// <summary>
/// gets or sets id of user that moderate forum
/// </summary>
public virtual long ModeratorId { get; set; }
/// <summary>
/// gets or sets permission of user that moderate forum
/// </summary>
public virtual ForumModeratorPermissions Permissions { get; set; }
/// <summary>
/// indicate moderator's permissions in this forum apply with
/// </summary>
public virtual bool ApplyChildren { get; set; }
#endregion
}
[Flags]
public enum ForumModeratorPermissions
{
CanEditPosts=1,
CanDeletePosts=2,
CanManageTopics=4,
CanOpenCloseTopics=8,
...
} /// <summary>
/// Represents the Announcement that shown Top Of Forums
/// </summary>
public class ForumAnnouncement
{
#region Ctor
/// <summary>
/// create one instance of <see cref="ForumAnnouncement"/>
/// </summary>
public ForumAnnouncement()
{
Id = SequentialGuidGenerator.NewSequentialGuid();
CreatedOn = DateTime.Now;
}
#endregion
#region Properties
/// <summary>
/// gets or sets Identifier
/// </summary>
public virtual Guid Id { get; set; }
/// <summary>
/// gets or sets DateTime That this Announcement Will be Shown
/// </summary>
public virtual DateTime StartOn { get; set; }
/// <summary>
/// gets or sets DateTime That this Announcement Will be Finished
/// </summary>
public virtual DateTime? ExpireOn { get; set; }
/// <summary>
/// gets or sets Content of this Announcement
/// </summary>
public virtual string Message { get; set; }
/// <summary>
/// Indicate this Announcement Will be shown on Children Forums
/// </summary>
public virtual bool ApplyChildren { get; set; }
/// <summary>
/// gets or sets datetime that this record created
/// </summary>
public virtual DateTime CreatedOn { get; set; }
#endregion
#region NavigationProperties
/// <summary>
/// gets or sets Forum that associated With this Announcement
/// </summary>
public virtual Forum Forum { get; set; }
/// <summary>
/// gets or sets Identifier of Forum that associated With this Announcement
/// </summary>
public virtual long ForumId { get; set; }
#endregion
} /// <summary>
/// Represents a base class for AuditLog
/// </summary>
public abstract class AuditBaseEntity
{
#region Properties
/// <summary>
/// sets or gets identifier
/// </summary>
public virtual long Id { get; set; }
/// <summary>
/// gets or sets datetime that is created
/// </summary>
public virtual DateTime CreatedOn { get; set; }
/// <summary>
/// gets or sets datetime that is modified
/// </summary>
public virtual DateTime? LastModifiedOn { get; set; }
/// <summary>
/// gets or sets reason of Last Update for increase performance
/// </summary>
public virtual string LastModifyReason { get; set; }
/// <summary>
/// gets or sets displayName of Last Modifier for increase performance
/// </summary>
public virtual string LastModifier{ get; set; }
/// <summary>
/// indicate this entity is Locked for Modify
/// </summary>
public virtual bool ModifyLocked { get; set; }
/// <summary>
/// gets or sets rowversion for synchronization problem
/// </summary>
public virtual byte[] RowVersion { get; set; }
/// <summary>
/// gets or sets count of this content's Updates
/// </summary>
public virtual int ModifyCount { get; set; }
#endregion
#region NavigationProperties
/// <summary>
/// gets or sets creator of this record
/// </summary>
public virtual User Creator { get; set; }
/// <summary>
/// gets or sets creator's Id of this record
/// </summary>
public virtual long CreatorId { get; set; }
#endregion
} /// <summary>
/// Represents the Topic in the Forums
/// </summary>
public class ForumTopic
{
#region Ctor
/// <summary>
/// create one instance of <see cref="ForumTopic"/>
/// </summary>
public ForumTopic()
{
CreatedOn = DateTime.Now;
}
#endregion
#region Properties
/// <summary>
/// sets or gets identifier
/// </summary>
public virtual long Id { get; set; }
/// <summary>
/// gets or sets datetime that is created
/// </summary>
public virtual DateTime CreatedOn { get; set; }
/// <summary>
/// gets or sets Title Of this topic
/// </summary>
public virtual string Title { get; set; }
/// <summary>
/// gets or sets name of tags that assosiated with
/// this content fo increase performance
/// </summary>
public virtual string TagNames { get; set; }
/// <summary>
/// indicate this topic is Sticky and will be shown top of forum
/// </summary>
public virtual bool IsSticky { get; set; }
/// <summary>
/// indicate this topic is closed
/// </summary>
public virtual bool IsClosed { get; set; }
/// <summary>
/// gets or sets identifier of last post in this topic
/// </summary>
public virtual long LastPostId { get; set; }
/// <summary>
/// gets or sets identifier of Last user that post in this topic
/// </summary>
public virtual long LastPosterId { get; set; }
/// <summary>
/// gets or sets title of last Post in this topic
/// </summary>
public virtual string LastPostTitle { get; set; }
/// <summary>
/// gets or sets displayName of user that create lastpost in this topic
/// </summary>
public virtual string LastPoster { get; set; }
/// <summary>
/// gets or sets datetime that last post posted in this topic
/// </summary>
public virtual DateTime? LastPostCreatedOn { get; set; }
/// <summary>
/// indicate this topic is approved
/// </summary>
public virtual bool IsApproved { get; set; }
/// <summary>
/// indicate this topic is type of Announcements and shown in Annoucements sections
/// </summary>
public virtual bool IsAnnouncement { get; set; }
/// <summary>
/// gets or sets viewed count
/// </summary>
public virtual long ViewCount { get; set; }
/// <summary>
/// gets or sets count of posts that they are approved
/// </summary>
public virtual int ApprovedPostsCount { get; set; }
/// <summary>
/// gets or sets count of posts that they are Unapproved
/// </summary>
public virtual int UnApprovedPostsCount { get; set; }
/// <summary>
/// gets or sets specifications of this topic's rating
/// </summary>
public virtual Rating Rating { get; set; }
/// <summary>
/// gets or sets datetime that this topic closed
/// </summary>
public virtual DateTime? ClosedOn { get; set; }
/// <summary>
/// gets or sets reason that this topic colsed
/// </summary>
public virtual string ClosedReason { get; set; }
/// <summary>
/// gets or sets count of reports
/// </summary>
public virtual int ReportsCount { get; set; }
/// <summary>
/// indicate the posts of this topic should be Moderate Before Dipslay
/// </summary>
public virtual bool ModeratePosts { get; set; }
/// <summary>
/// gets or sets Level of this topic
/// </summary>
public virtual ForumTopicLevel Level { get; set; }
/// <summary>
/// gets or sets type of this topic
/// </summary>
public virtual ForumTopicType Type { get; set; }
#endregion
#region NavigationProperties
/// <summary>
/// gets or sets Collection of tags that associated with this topic
/// </summary>
public virtual ICollection<Tag> Tags { get; set; }
/// <summary>
/// gets or sets forum
/// </summary>
public virtual Forum Forum { get; set; }
/// <summary>
/// gets or sets identifier of Forum
/// </summary>
public virtual long ForumId { get; set; }
/// <summary>
/// gets or sets Posts Of this topic
/// </summary>
public virtual ICollection<ForumPost> Posts { get; set; }
/// <summary>
/// get or set Subscriptions List
/// </summary>
public virtual ICollection<User> Subscribers { get; set; }
/// <summary>
/// get or set Trackkers list of this Topic
/// </summary>
public virtual ICollection<ForumTopicTracker> Trackers { get; set; }
/// <summary>
/// gets or sets creator of this record
/// </summary>
public virtual User Creator { get; set; }
/// <summary>
/// gets or sets creator's Id of this record
/// </summary>
public virtual long CreatorId { get; set; }
#endregion
}
public enum ForumTopicType
{
Non,
Tutorial,
Conversation,
Question,
News,
Article
}
public enum ForumTopicLevel
{
Professional,
Intermediate,
Beginner
} 