modelBuilder.Entity<Blog>()
    .Property(b => b.Url)
    .HasField("_validatedUrl")
    .UsePropertyAccessMode(PropertyAccessMode.Field);

public class Blog
{
    private string _validatedUrl;

    public int BlogId { get; set; }

    public string GetUrl()
    {
        return _validatedUrl; 
    }

    public void SetUrl(string url)
    {
        using (var client = new HttpClient())
        {
            var response = client.GetAsync(url).Result;
            response.EnsureSuccessStatusCode();
        }

        _validatedUrl = url;
    }
}

modelBuilder.UsePropertyAccessMode(PropertyAccessMode.Property);

<div class="alert alert-warning alert-dismissable">
  <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>
  نمایش اعلان
</div>

public class Alert
{
        public const string TempDataKey = "TempDataAlerts";
        public string AlertStyle { get; set; }
        public string Message { get; set; }
        public bool Dismissable { get; set; }
}

https://plus.google.com/u/0/userId/posts 

https://plus.google.com/_/stream/getactivities/?&sp=[1,2,"userId",null,null,null,null,"social.google.com",[]]

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Net;
//needs a ref. to System.Web.Extensions asm.
using System.Web.Script.Serialization;

namespace GooglePlus
{
    [DebuggerDisplay("{DateTime}-{Title}-{Comment}-{Url}")]
    public class GooglePlusItem
    {
        public DateTime DateTime { set; get; }
        public string Url { set; get; }
        public string Title { set; get; }
        public string Comment { set; get; }
    }

    public static class Utils
    {
        public static DateTime ConvertFromUnixTimestamp(this long data)
        {
            return new DateTime(1970, 1, 1, 0, 0, 0, 0).AddSeconds(data);
        }

        public static string ToSafeString(this object data)
        {
            return data == null ? string.Empty : data.ToString();
        }
    }

    public class GooglePlusJsonParser
    {
        public static IList<GooglePlusItem> GetMyPublicItemsList(string userId)
        {
            var url = string.Format("https://plus.google.com/_/stream/getactivities/?&sp=[1,2,\"{0}\",null,null,null,null,\"social.google.com\",[]]", userId);
            var jsonData = new WebClient().DownloadString(url);
            return ParsePublicData(jsonData);
        }

        public static IList<GooglePlusItem> ParsePublicData(string jsonData)
        {
            jsonData = removeRedundantData(jsonData);
            var posts = parseJson(jsonData);
            return createItemsList(posts);
        }

        private static IList<GooglePlusItem> createItemsList(object[] posts)
        {
            var result = new List<GooglePlusItem>();
            foreach (object[] post in posts)
            {
                var items = (object[])((object[])post[66])[0];
                result.Add(new GooglePlusItem
                {
                    DateTime = (((Int64)post[5]) / 1000).ConvertFromUnixTimestamp(),
                    Title = items[3].ToSafeString(),
                    Url = items[1].ToSafeString(),
                    Comment = post[4].ToSafeString()
                });
            }
            return result;
        }

        private static object[] parseJson(string jsonData)
        {
            var jsonObject = new JavaScriptSerializer().Deserialize<object[]>(jsonData);
            var posts = (object[])(((object[])jsonObject[1])[0]);
            return posts;
        }

        private static string removeRedundantData(string jsonData)
        {
            return jsonData.Replace(")]}'", string.Empty)
                           .Replace("[,", "[\"\",")
                           .Replace(",,", ",\"\",")
                           .Replace(",,", ",\"\",");
        }
    }
}

using System;
using System.Web.Mvc;

namespace MvcApplication13.Controllers
{
    public class HomeController : Controller
    {
        [HandleError]
        public ActionResult Index()
        {
            throw new InvalidOperationException();
            return View();
        }
    }
}

<system.web>
   <customErrors mode="On" />

GlobalFilters.Filters.Add(new HandleErrorAttribute());

[HandleError(View = "CustomErrorView")]

[HandleError(ExceptionType = typeof(NullReferenceException), View = "ErrorHandling")]

@model System.Web.Mvc.HandleErrorInfo
            
@{
    ViewBag.Title = "DbError";
}
 
<h2>An Error Has Occurred</h2>
 
@if (Model != null)
{
    <p>@Model.Exception.GetType().Name<br />
    thrown in @Model.ControllerName @Model.ActionName</p>
}

<customErrors mode="On" defaultRedirect="error">
      <error statusCode="404" redirect="error/notfound" />
      <error statusCode="403" redirect="error/forbidden" />
</customErrors>

using System.Web.Mvc;

namespace MvcApplication13.Controllers
{
    public class ErrorController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        public ActionResult NotFound()
        {
            return View();
        }

        public ActionResult Forbidden()
        {
            return View();
        }
    }
}

<configuration>
  <configSections>
    <sectionGroup name="elmah">
      <section name="security" requirePermission="false" type="Elmah.SecuritySectionHandler, Elmah"/>
      <section name="errorLog" requirePermission="false" type="Elmah.ErrorLogSectionHandler, Elmah"/>
      <section name="errorMail" requirePermission="false" type="Elmah.ErrorMailSectionHandler, Elmah"/>
      <section name="errorFilter" requirePermission="false" type="Elmah.ErrorFilterSectionHandler, Elmah"/>
      <section name="errorTweet" requirePermission="false" type="Elmah.ErrorTweetSectionHandler, Elmah"/>
    </sectionGroup>
  </configSections>

<elmah>
    <security allowRemoteAccess="1"/>
    <errorLog type="Elmah.XmlFileErrorLog, Elmah" logPath="~/App_Data/ErrorsLog"/>
  </elmah>

<httpModules>
      <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah"/>      
</httpModules>
<httpHandlers>
      <add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah"/>      
</httpHandlers>

<system.webServer>
    <validation validateIntegratedModeConfiguration="false"/>
    <modules runAllManagedModulesForAllRequests="true">
      <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah"/>
    </modules>
    <handlers>
      <add name="Elmah" verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah"/>
    </handlers>
</system.webServer>

public static void RegisterRoutes(RouteCollection routes)
{
    //routes.IgnoreRoute("elmah.axd");
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

filters.Add(new HandleErrorAttribute());

using System.Web.Mvc;
using Elmah;

namespace MvcApplication13.CustomFilters
{
    public class ElmahHandledErrorLoggerFilter : IExceptionFilter
    {
        public void OnException(ExceptionContext context)
        {
            if (context.ExceptionHandled)
                ErrorSignal.FromCurrentContext().Raise(context.Exception);
            // all other exceptions will be caught by ELMAH anyway
        }
    }
}

public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
      filters.Add(new ElmahHandledErrorLoggerFilter());
      filters.Add(new HandleErrorAttribute());
}

PS /> $env:PSModulePath -Split ":"

/Users/sirwanafifi/.local/share/powershell/Modules
/usr/local/share/powershell/Modules
/usr/local/microsoft/powershell/7/Modules

PS /> Import-Module ./PingModule.psm1

PS /> Get-Module PingModule

ModuleType Version    PreRelease Name                                ExportedCommands
---------- -------    ---------- ----                                ----------------
Script     0.0                   PingModule                          Get-PingReply

PS /> Import-Module ./PingModule.ps1
PS /> Get-Module PingModule

ModuleType Version    PreRelease Name                                ExportedCommands
---------- -------    ---------- ----                                ----------------
Script     0.0                   PingModule

Function Get-PingReply {
    // as before
}

Function Get-PrivateFunction {
    Write-Debug 'This is a private function'
}

Export-ModuleMember -Function @(
    'Get-PingReply'
)

          Membership.CreateUser(userName, password, email);  
          Roles.AddUserToRoles(userName, "IdentityServerUsers");

        void CreateUser(string userName, string password, string email = null);
        void DeleteUser(string userName);
        
        IEnumerable<string> GetUsers(int start, int count, out int totalCount);
        IEnumerable<string> GetUsers(string filter, int start, int count, out int totalCount);

        void SetPassword(string userName, string password);

        void SetRolesForUser(string userName, IEnumerable<string> roles);
        IEnumerable<string> GetRolesForUser(string userName);

        IEnumerable<string> GetRoles();
        void CreateRole(string roleName);
        void DeleteRole(string roleName);