آیا به این نتیجه رسیدید که اصل DRY  را نقض کرده‌ایم؟ بله همین طور است. تکرار کلاس‌های css مربوط به بوت استرپ، تکرار هلپرهای توکار ASP.NET MVC بارها و بارها، خوانایی کد را پایین میارود و در برخی موارد هم خسته کننده خواهد بود. اگر با مباحث مربوط به EditorTemplate‌ها قبلا آشنا شده باشید، خیلی سریع عنوان خواهید کرد که بهتر است از این امکان بهره برد؛ بله درست است. برای این منظور در مسیر Views/Shared/EditorTemplates، فایل cshtml. همنام با نوع داده مد نظر را ایجاد میکنیم.

String.cshtml

@model string
    @Html.TextBox("",ViewData.TemplateInfo.FormattedModelValue,
    new { @class="form-control",placeholder=ViewData.ModelMetadata.Watermark})

Enum.cshtml

@model Enum
@Html.EnumDropDownListFor(m => Model, new { @class = "form-control" })

حال دوباره به نتیجه حاصل از تغییرات اعمال شده توجه کنید:

این نتیجه امیدوار کننده است ولی  بازهم یکسری از کدها بی دلیل تکرار شده‌اند. هلپرهای زیر نیز میتوانند در کاهش کدها به کمک ما برسند :

public static class BootstrapHelpers
    {
        public static IHtmlString BootstrapLabelFor<TModel,TProp>(
            this HtmlHelper<TModel> helper,
            Expression<Func<TModel,TProp>> property)
        {
            return helper.LabelFor(property, new
            {
                @class = "col-md-2 control-label"
            });
        }
        public static IHtmlString BootstrapLabel(
            this HtmlHelper helper,
            string propertyName)
        {
            return helper.Label(propertyName, new
            {
                @class = "col-md-2 control-label"
            });
        }
    }

از کلاس بالا برای عدم تکرار کلاس‌های بوت استرپ مربوط به Label، استفاده میشود .

حال دوباره نتیجه را مشاهده کنید:

خیلی عالی؛ توانستیم از تکرار یکسری از کلاس‌های بوت استرپ خلاص شویم. اما در ادامه با استفاده از یک Object Template به عنوان EditorTemplate برای نوع داده‌های Complex، کار را تمام خواهیم کرد.

 EditorTemplate‌های تعریف شده در بالا، صرفا برای نوع داده‌های خاصی مورد استفاده قرار خواهند گرفت؛ ولی پیاده سازی یک EditorTemplate جنریک که حتی از ویومدل‌های موجود در پروژه نیز پشتیابی کند، به شکل زیر خواهد بود.

Object.cshtml

@model dynamic

@foreach (var prop in ViewData.ModelMetadata.Properties
                            .Where(p => p.ShowForEdit))
{
    if (prop.TemplateHint == "HiddenInput")
    {
        @Html.Hidden(prop.PropertyName)
    }
    else
    {
        <div class="form-group">
            @Html.BootstrapLabel(prop.PropertyName)
            <div class="col-md-10">
                @Html.Editor(prop.PropertyName)
                @Html.ValidationMessage(prop.PropertyName)
            </div>
        </div>
    }
}

با استفاده از ViewData.ModelMetadata میتوان به خصوصیات مدل مربوط به ویو دسترسی پیدا کرد که در بالا با استفاده از همین خصوصیت به تمام پراپرتی‌های مدل دسترسی پیدا کرده و مقداری کد تکراری باقی مانده را هم در اینجا کپسوله کردیم.

حال کافی است به شکل زیر عمل کنیم:

public class base_CenterType
    {
        public int ID { get; set; }
        public string Title { get; set; }
        public string Dsc { get; set; }
     }

public IList<base_CenterType> GetAll()
        {
            return _base_CenterType.ToList();
        }

StiReport mainreport = new StiReport();            
mainreport.RegBusinessObject("base_CenterType", base_CenterTypeService.GetAll());
mainreport.Load("C:\\StiWebReport2.mrt");
mainreport.Show();

import React, { useState } from "react";

export const Input = () => {
  const [name, setName] = useState("");
  return <input value={name} onChange={(e) => setName(e.target.value)} />;
};

const [name, setName] = useState(0);

const [name, setName] = useState<string>("");

const [name, setName] = useState("");

const [name, setName] = useState<string | null>(null);

import React, { useRef, useState } from "react";

export const Input = () => {
  const [name, setName] = useState("");
  const inputRef = useRef(null);

  if (inputRef && inputRef.current) {
    console.log("ref", inputRef.current.value);
  }
  return (
    <input
      ref={inputRef}
      value={name}
      onChange={(e) => setName(e.target.value)}
    />
  );
};

interface MutableRefObject<T> {
   current: T;
}

const inputRef = useRef<HTMLInputElement>(null);

//if (inputRef && inputRef.current) {
  console.log("ref", inputRef.current.value);
//}

console.log("ref", inputRef?.current?.value);

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>@ViewBag.Title - My ASP.NET Application</title>
    <link href="~/Content/Site.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <div>
        @RenderBody()
    </div>

    <script src="~/Scripts/jquery-1.11.1.min.js"></script>
    <script src="~/Scripts/jquery.unobtrusive-ajax.js"></script>
    <script src="~/Scripts/ajaxfileupload.js"></script>
    @RenderSection("Scripts", required: false)
</body>
</html>

namespace MVCAjaxFormUpload.Models
{
    public class Product
    {
        public int Id { set; get; }
        public string Name { set; get; }
    }
}

using System.Threading;
using System.Web;
using System.Web.Mvc;
using MVCAjaxFormUpload.Models;

namespace MVCAjaxFormUpload.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        [HttpPost]
        public ActionResult Index(Product product)
        {
            var isAjax = this.Request.IsAjaxRequest();

            return Json(new { result = "ok" }, JsonRequestBehavior.AllowGet);
        }

        [HttpPost]
        public ActionResult UploadFiles(HttpPostedFileBase image1, int id)
        {
            var isAjax = this.Request.IsAjaxRequest();
            Thread.Sleep(3000); //شبیه سازی عملیات طولانی
            return Json(new { FileName = "/Uploads/filename.ext" }, "text/html", JsonRequestBehavior.AllowGet);
        }
    }
}

@model MVCAjaxFormUpload.Models.Product
@{
    ViewBag.Title = "Index";
}

<h2>Ajax Form Upload</h2>

@using (Ajax.BeginForm(actionName: "Index",
                       controllerName: "Home",
                       ajaxOptions: new AjaxOptions { HttpMethod = "POST" },
                       routeValues: null,
                       htmlAttributes: new { id = "uploadForm" }))
{
    <label>Name:</label>
    @Html.TextBoxFor(model => model.Name)
    <br />
    <label>Image:</label>
    <br />
    <input type="file" name="Image1" id="Image1" />
    <br />
    <input type="submit" value="Submit" />
    <img id="loading" src="~/Content/Images/loading.gif" style="display:none;">
}

@section Scripts
{
    <script type="text/javascript">
        $(function () {
            $('#uploadForm').submit(function () {
                $("#loading").show();
                $.ajaxFileUpload({
                    url: "@Url.Action("UploadFiles", "Home")", // مسیری که باید فایل به آن ارسال شود
                    secureuri: false,
                    fileElementId: 'Image1', // آی دی المان ورودی فایل
                    dataType: 'json',
                    data: { id: 1, data: 'test' }, // اطلاعات اضافی در صورت نیاز
                    success: function (data, status) {
                        $("#loading").hide();
                        if (typeof (data.FileName) != 'undefined') {
                            alert(data.FileName);
                        }
                    },
                    error: function (data, status, e) {
                        $("#loading").hide();
                        alert(e);
                    }
                });
            });
        });
    </script>
}

SELECT
    [Id], 
    (SELECT top 1  * FROM  [AppUsers] FOR XML auto),
    HASHBYTES ('SHA2_256', (SELECT top 1  * FROM  [AppUsers] FOR XML auto)) AS [hash] -- varbinary(n), since 2012
FROM
    [AppUsers]

using System.Collections.Generic;

namespace EFCoreRowIntegrity
{
    public interface IAuditableEntity
    {
        string Hash { set; get; }
    }

    public static class AuditableShadowProperties
    {
        public static readonly string CreatedDateTime = nameof(CreatedDateTime);
        public static readonly string ModifiedDateTime = nameof(ModifiedDateTime);
    }

    public class Blog : IAuditableEntity
    {
        public int BlogId { get; set; }
        public string Url { get; set; }

        public List<Post> Posts { get; set; }

        public string Hash { get; set; }
    }

    public class Post : IAuditableEntity
    {
        public int PostId { get; set; }
        public string Title { get; set; }
        public string Content { get; set; }

        public int BlogId { get; set; }
        public Blog Blog { get; set; }

        public string Hash { get; set; }
    }
}

using System.Collections.Generic;
using Microsoft.EntityFrameworkCore.ChangeTracking;

namespace EFCoreRowIntegrity
{
    public class AuditEntry
    {
        public EntityEntry EntityEntry { set; get; }
        public IList<AuditProperty> AuditProperties { set; get; } = new List<AuditProperty>();

        public AuditEntry() { }

        public AuditEntry(EntityEntry entry)
        {
            EntityEntry = entry;
        }
    }

    public class AuditProperty
    {
        public string Name { set; get; }
        public object Value { set; get; }

        public bool IsTemporary { set; get; }
        public PropertyEntry PropertyEntry { set; get; }

        public AuditProperty() { }

        public AuditProperty(string name, object value, bool isTemporary, PropertyEntry property)
        {
            Name = name;
            Value = value;
            IsTemporary = isTemporary;
            PropertyEntry = property;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Text;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.ChangeTracking;
using Newtonsoft.Json;

namespace EFCoreRowIntegrity
{
    public static class HashingExtensions
    {
        public static string GenerateObjectHash(this object @object)
        {
            if (@object == null)
            {
                return string.Empty;
            }

            var jsonData = JsonConvert.SerializeObject(@object, Formatting.Indented);
            using (var hashAlgorithm = new SHA256CryptoServiceProvider())
            {
                var byteValue = Encoding.UTF8.GetBytes(jsonData);
                var byteHash = hashAlgorithm.ComputeHash(byteValue);
                return Convert.ToBase64String(byteHash);
            }
        }

        public static string GenerateEntityEntryHash(this EntityEntry entry, string propertyToIgnore)
        {
            var auditEntry = new Dictionary<string, object>();
            foreach (var property in entry.Properties)
            {
                var propertyName = property.Metadata.Name;
                if (propertyName == propertyToIgnore)
                {
                    continue;
                }
                auditEntry[propertyName] = property.CurrentValue;
            }
            return auditEntry.GenerateObjectHash();
        }

        public static string GenerateEntityHash<TEntity>(this DbContext context, TEntity entity, string propertyToIgnore)
        {
            return context.Entry(entity).GenerateEntityEntryHash(propertyToIgnore);
        }
    }
}

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.ChangeTracking;
using Microsoft.Extensions.Logging;

namespace EFCoreRowIntegrity
{
    public class BloggingContext : DbContext
    {
        public BloggingContext()
        { }

        public BloggingContext(DbContextOptions options)
            : base(options)
        { }

        public DbSet<Blog> Blogs { get; set; }
        public DbSet<Post> Posts { get; set; }

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            if (!optionsBuilder.IsConfigured)
            {
                optionsBuilder.EnableSensitiveDataLogging();
                var path = Path.Combine(Directory.GetCurrentDirectory(), "app_data", "EFCore.RowIntegrity.mdf");
                optionsBuilder.UseSqlServer($"Server=(localdb)\\mssqllocaldb;Database=EFCore.RowIntegrity;AttachDbFilename={path};Trusted_Connection=True;");
                optionsBuilder.UseLoggerFactory(new LoggerFactory().AddConsole((message, logLevel) =>
                logLevel == LogLevel.Debug &&
                           message.StartsWith("Microsoft.EntityFrameworkCore.Database.Command")));
            }
        }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);

            foreach (var entityType in modelBuilder.Model
                                                   .GetEntityTypes()
                                                   .Where(e => typeof(IAuditableEntity)
                                                   .IsAssignableFrom(e.ClrType)))
            {
                modelBuilder.Entity(entityType.ClrType)
                            .Property<DateTimeOffset?>(AuditableShadowProperties.CreatedDateTime);
                modelBuilder.Entity(entityType.ClrType)
                            .Property<DateTimeOffset?>(AuditableShadowProperties.ModifiedDateTime);
            }
        }

        public override int SaveChanges()
        {
            var auditEntries = OnBeforeSaveChanges();
            var result = base.SaveChanges();
            OnAfterSaveChanges(auditEntries);
            return result;
        }

        private IList<AuditEntry> OnBeforeSaveChanges()
        {
            var auditEntries = new List<AuditEntry>();

            foreach (var entry in ChangeTracker.Entries<IAuditableEntity>())
            {
                if (entry.State == EntityState.Detached || entry.State == EntityState.Unchanged)
                {
                    continue;
                }

                var auditEntry = new AuditEntry(entry);
                auditEntries.Add(auditEntry);

                var now = DateTimeOffset.UtcNow;

                foreach (var property in entry.Properties)
                {
                    var propertyName = property.Metadata.Name;
                    if (propertyName == nameof(IAuditableEntity.Hash))
                    {
                        continue;
                    }

                    if (property.IsTemporary)
                    {
                        // It's an auto-generated value and should be retrieved from the DB after calling the base.SaveChanges().
                        auditEntry.AuditProperties.Add(new AuditProperty(propertyName, null, true, property));
                        continue;
                    }

                    switch (entry.State)
                    {
                        case EntityState.Added:
                            entry.Property(AuditableShadowProperties.CreatedDateTime).CurrentValue = now;
                            auditEntry.AuditProperties.Add(new AuditProperty(propertyName, property.CurrentValue, false, property));
                            break;
                        case EntityState.Modified:
                            auditEntry.AuditProperties.Add(new AuditProperty(propertyName, property.CurrentValue, false, property));
                            entry.Property(AuditableShadowProperties.ModifiedDateTime).CurrentValue = now;
                            break;
                    }
                }
            }

            return auditEntries;
        }

        private void OnAfterSaveChanges(IList<AuditEntry> auditEntries)
        {
            foreach (var auditEntry in auditEntries)
            {
                foreach (var auditProperty in auditEntry.AuditProperties.Where(x => x.IsTemporary))
                {
                    // Now we have the auto-generated value from the DB.
                    auditProperty.Value = auditProperty.PropertyEntry.CurrentValue;
                    auditProperty.IsTemporary = false;
                }
                auditEntry.EntityEntry.Property(nameof(IAuditableEntity.Hash)).CurrentValue =
                    auditEntry.AuditProperties.ToDictionary(x => x.Name, x => x.Value).GenerateObjectHash();
            }
            base.SaveChanges();
        }
    }
}

public override int SaveChanges()
{
    var auditEntries = OnBeforeSaveChanges();
    var result = base.SaveChanges();
    OnAfterSaveChanges(auditEntries);
    return result;
}

if (property.IsTemporary)
{
   // It's an auto-generated value and should be retrieved from the DB after calling the base.SaveChanges().
   auditEntry.AuditProperties.Add(new AuditProperty(propertyName, null, true, property));
   continue;
}

private static void CheckRow1IsAuthentic()
{
    using (var context = new BloggingContext())
    {
        var blog1 = context.Blogs.Single(x => x.BlogId == 1);
        var entityHash = context.GenerateEntityHash(blog1, propertyToIgnore: nameof(IAuditableEntity.Hash));
        var dbRowHash = blog1.Hash;
        Console.WriteLine($"entityHash: {entityHash}\ndbRowHash:  {dbRowHash}");
        if (entityHash == dbRowHash)
        {
            Console.WriteLine("This row is authentic!");
        }
        else
        {
            Console.WriteLine("This row is tampered outside of the application!");
        }
    }
}

entityHash: P110cYquWpoaZuTpCWaqBn6HPSGdoQdmaAN05s1zYqo=
dbRowHash: P110cYquWpoaZuTpCWaqBn6HPSGdoQdmaAN05s1zYqo=
This row is authentic!

entityHash: tdiZhKMJRnROGLLam1WpldA0fy/CbjJaR2Y2jNU9izk=
dbRowHash: P110cYquWpoaZuTpCWaqBn6HPSGdoQdmaAN05s1zYqo=
This row is tampered outside of the application!

var blogs = (from blog in context.Blogs.ToList() // Note: this `ToList()` is necessary here for having Shadow properties values, otherwise they will considered `null`.
             let computedHash = context.GenerateEntityHash(blog, nameof(IAuditableEntity.Hash))
             select new
             {
               blog.BlogId,
               blog.Url,
               RowHash = blog.Hash,
               ComputedHash = computedHash,
               IsAuthentic = blog.Hash == computedHash
             }).ToList();

 var ctx = new Entities();
            var Fields = ctx.ENTITIES_FEILDS.ToList();
            var assemblyBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(
                                    name: new AssemblyName("Demo"), access: AssemblyBuilderAccess.Run);

            var moduleBuilder = assemblyBuilder.DefineDynamicModule(name: "Module");

            var typeBuilder = moduleBuilder.DefineType(name: Fields.First(c=>c.FEILD_ID==1).ENTITIES.ENTITY_NAME, attr: TypeAttributes.Public);

            foreach (var item in Fields)
            {
                   
            }

 PM> Install-Package Microsoft.AspNetCore.ResponseCompression

{
    "dependencies": {
        "Microsoft.AspNetCore.ResponseCompression": "1.0.0"
    }
}

public void ConfigureServices(IServiceCollection services)
{
    services.AddResponseCompression(options =>
    {
        options.MimeTypes = Microsoft.AspNetCore.ResponseCompression.ResponseCompressionDefaults.MimeTypes;
    });
}

namespace Microsoft.AspNetCore.ResponseCompression
{
    /// <summary>
    /// Defaults for the ResponseCompressionMiddleware
    /// </summary>
    public class ResponseCompressionDefaults
    {
        /// <summary>
        /// Default MIME types to compress responses for.
        /// </summary>
        // This list is not intended to be exhaustive, it's a baseline for the 90% case.
        public static readonly IEnumerable<string> MimeTypes = new[]
        {
            // General
            "text/plain",
            // Static files
            "text/css",
            "application/javascript",
            // MVC
            "text/html",
            "application/xml",
            "text/xml",
            "application/json",
            "text/json",
        };
    }
}

services.AddResponseCompression(options =>
{
    options.MimeTypes = ResponseCompressionDefaults.MimeTypes.Concat(new[]
                                {
                                    "image/svg+xml",
                                    "application/font-woff2"
                                });
            });

services.AddResponseCompression(options =>
{
  //If no compression providers are specified then GZip is used by default.
  //options.Providers.Add<GzipCompressionProvider>();

services.Configure<GzipCompressionProviderOptions>(options =>
{
  options.Level = System.IO.Compression.CompressionLevel.Optimal;
});

 options.EnableForHttps = true;

public void Configure(IApplicationBuilder app)
{
   app.UseResponseCompression()  // Adds the response compression to the request pipeline
   .UseStaticFiles(); // Adds the static middleware to the request pipeline  
}

public void Configure(IApplicationBuilder app,
                      IHostingEnvironment env,
                      ILoggerFactory loggerFactory)
{
    app.UseResponseCompression()
       .UseStaticFiles(
           new StaticFileOptions
           {
               OnPrepareResponse =
                   _ => _.Context.Response.Headers[HeaderNames.CacheControl] = 
                        "public,max-age=604800" // A week in seconds
           })
       .UseMvc(routes => routes.MapRoute("default", "{controller=Home}/{action=Index}/{id?}"));
}

 PM> Install-Package Microsoft.AspNetCore.Rewrite

public void Configure(IApplicationBuilder app)
{
    app.UseRewriter(new RewriteOptions()
                            .AddRedirectToHttps()
                            .AddRewrite(@"app/(\d+)", "app?id=$1", skipRemainingRules: false) // Rewrite based on a Regular expression
                            //.AddRedirectToHttps(302, 5001) // Redirect to a different port and use HTTPS
                            .AddRedirect("(.*)/$", "$1")  // remove trailing slash, Redirect using a regular expression
                            .AddRedirect(@"^section1/(.*)", "new/$1", (int)HttpStatusCode.Redirect)
                            .AddRedirect(@"^section2/(\\d+)/(.*)", "new/$1/$2", (int)HttpStatusCode.MovedPermanently)
                            .AddRewrite("^feed$", "/?format=rss", skipRemainingRules: false));

 app.UseRewriter(new RewriteOptions()
.AddIISUrlRewrite(env.ContentRootFileProvider, "web.config")
.AddApacheModRewrite(env.ContentRootFileProvider, ".htaccess"));

public class RedirectWwwRule : Microsoft.AspNetCore.Rewrite.IRule
{
    public int StatusCode { get; } = (int)HttpStatusCode.MovedPermanently;
    public bool ExcludeLocalhost { get; set; } = true;
    public void ApplyRule(RewriteContext context)
    {
        var request = context.HttpContext.Request;
        var host = request.Host;
        if (host.Host.StartsWith("www", StringComparison.OrdinalIgnoreCase))
        {
            context.Result = RuleResult.ContinueRules;
            return;
        }
        if (ExcludeLocalhost && string.Equals(host.Host, "localhost", StringComparison.OrdinalIgnoreCase))
        {
            context.Result = RuleResult.ContinueRules;
            return;
        }
        string newPath = request.Scheme + "://www." + host.Value + request.PathBase + request.Path + request.QueryString;
 
        var response = context.HttpContext.Response;
        response.StatusCode = StatusCode;
        response.Headers[HeaderNames.Location] = newPath;
        context.Result = RuleResult.EndResponse; // Do not continue processing the request
    }
}

 app.UseRewriter(new RewriteOptions().Add(new RedirectWwwRule()));

 var options = new RewriteOptions().Add(app.ApplicationServices.GetService<RedirectWwwRule>());

git remote add [alias][URL]

git remote

git fetch [alias][alias/branch name]

pull [alias][remote branch name ]

git tag [tag name]