using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
 
public class IPBlockModule : IHttpModule
{
       public IPBlockModule()
       {
              // TODO: Add constructor logic here
       }
    public void Dispose()
    {
        //Dispose
    }
 
    public void Init(HttpApplication context)
    {
        context.BeginRequest += new EventHandler(Application_BeginRequest);
    }
 
    private void Application_BeginRequest(object source, EventArgs e)
    {
        HttpContext context = ((HttpApplication)source).Context;
        string ipAddress = context.Request.UserHostAddress;
        if (IsBlockedIpAddress(ipAddress))
        {
            context.Response.StatusCode = 403;
            context.Response.Write("Forbidden : The server understood the request, but It is refusing to fulfill it.");
        }
    }
 
    private bool IsBlockedIpAddress(string ipAddress)
    {
        //Here I have stored Ip addresses in String[]. you can also Store in database.
        string[] IPs = {            "117.196.35.121",
                                    "117.196.35.122",
                                    "117.196.35.123",
                                    "117.196.35.124",
                                    "127.0.0.1"
                       };
 
        foreach(string IP in IPs)
        {
            if(IP == ipAddress)
                return true;
        }
        return false;
   
    }
    
}

 <configuration>
       <system.web>
              <compilation debug="true" targetFramework="4.0"/>
              <httpModules>
                     <add name="IPBlockModule" type="IPBlockModule"/>
              </httpModules>
       </system.web>
</configuration>

angular.module('app').controller('SomeLazyController', function($scope)
{
    $scope.key = '...';
});

Error: Argument ‘SomeLazyController’ is not a function, got undefined

// Registering a controller after app bootstrap
$controllerProvider.register('SomeLazyController', function($scope)
{
   $scope.key = '...'; 
});
 
// Registering a directive after app bootstrap
$compileProvider.directive('SomeLazyDirective', function()
{
    return {
        restrict: 'A',
        templateUrl: 'templates/some-lazy-directive.html'
    }
})
 
// etc

    <PackageReference Include="Swashbuckle.AspNetCore" Version="4.0.1" />
    <PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="4.0.1" />
    <PackageReference Include="Swashbuckle.AspNetCore.Filters" Version="4.5.2" />

    public static class ServiceCollectionExtensions
    {
        public static void AddCustomSwagger(this IServiceCollection services)
        {
            services.AddSwaggerGen(options =>
            {
                options.EnableAnnotations();
                options.DocumentFilter<AuthenticationDocumentFilter>();
                options.SwaggerDoc("v1", new Info { Version = "v1", Title = "Test API" });
            });
        }
        public static void UseSwaggerAndUI(this IApplicationBuilder app)
        {
            app.UseSwagger();
            app.UseSwaggerUI(options =>
            {
                options.DocExpansion(DocExpansion.None);
                options.SwaggerEndpoint("/swagger/v1/swagger.json", "Test API Docs");
            });
        }
    }

        public void Apply(SwaggerDocument swaggerDoc, DocumentFilterContext context)
        {
            if (!httpContextAccessor.HttpContext.User.Identity.IsAuthenticated)
            {
                foreach (var item in swaggerDoc.Paths)
                {
                    item.Value.Post = null;
                    item.Value.Put = null;
                }
            }
        }

    public void ConfigureServices(IServiceCollection services)
        {
            services.AddHttpContextAccessor();
            services.AddAuthorization();
            services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
                .AddCookie(options=>
            {
                options.AccessDeniedPath = "/Login";
                options.Cookie.HttpOnly = true;
                options.LoginPath = "/Login";
                options.LogoutPath = "/Login";
                options.ExpireTimeSpan = TimeSpan.FromDays(15);
                options.SlidingExpiration = true;
                options.Cookie.IsEssential = true;
                options.ReturnUrlParameter = "returnUrl";
            });
            services.AddMvc();
            services.AddCustomSwagger();
        }

        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            app.UseAuthentication();
            app.UseSwaggerAndUI();
            app.UseMvc(routes =>
            {
                routes.MapRoute(
                          name: "default",
                          template: "{controller=Home}/{action=Index}/{id?}");
            });
        }

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Image2Base64Converter
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnOpen_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Multiselect = false;
            ofd.Filter = "Pictures |*.bmp;*.jpg;*.jpeg;*.png";

            if (ofd.ShowDialog(this) == DialogResult.OK)
            {
                txtImagePath.Text = ofd.FileName;
            }
        }

        private void btnConvert_Click(object sender, EventArgs e)
        {
            if (!File.Exists(txtImagePath.Text))
            {
                MessageBox.Show("File not found!");
                return;
            }

            btnCopy.Enabled = false;
            btnConvert.Enabled = false;
            txtOutput.Enabled = false;

            BackgroundWorker bworker = new BackgroundWorker();
            bworker.DoWork += (o, a) =>
            {
                string header = "data:image/{0};base64,";
                header = string.Format(header, txtImagePath.Text.GetExtension());

                StringBuilder data = new StringBuilder();

                byte[] buffer;
                BinaryReader head = new BinaryReader(
                    new FileStream(txtImagePath.Text, FileMode.Open));

                buffer = head.ReadBytes(6561);
                while (buffer.Length > 0)
                {
                    data.Append(Convert.ToBase64String(buffer));
                    buffer = head.ReadBytes(6561);
                }

                head.Close();
                head.Dispose();

                this.Invoke(new Action(() =>
                {
                    txtOutput.ResetText();
                    txtOutput.AppendText(header);
                    txtOutput.AppendText(data.ToString());

                    btnCopy.Enabled = true;
                    btnConvert.Enabled = true;
                    txtOutput.Enabled = true;
                }));
            };

            bworker.RunWorkerAsync();
        }

        private void btnCopy_Click(object sender, EventArgs e)
        {
            Clipboard.SetText(txtOutput.Text);
        }
    }

    public static class ExtensionMethods
    {
        public static string GetExtension(this string str)
        {
            string ext = string.Empty;
            for (int i = str.Length - 1; i >= 0; i--)
            {
                if (str[i] == '.')
                {
                    break;
                }

                ext = str[i] + ext;
            }

            return ext;
        }
    }
}

• استفاده از Extention Method ها و JQuery در MVC | www.30sharp.com

• اولین گوشی های ویندوز فون نوکیا با نام Lumia + عکس و قیمت | علی پارسا | www.winbeta.net

• جامعه برنامه نویسان افغانستان | امیر مددی | itbazaar.persianblog.ir

• دیتاسنتر فیس بوک در سوئد | Mostafa Daneshvar | mostafadaneshvar.com

• نحوه ایجاد Rss با استفاده از ASP.Net | (فرزاد) | vcsharp.ir

• Document Databases? | msdn.microsoft.com

• NoSQL Document Database | msdn.microsoft.com

• Semantic search in SQL Server 2012 | blogs.msdn.com

• Silverlight 3D | msdn.microsoft.com

• NHibernate Mapping Generator 2.1 منتشر شد | nmg.codeplex.com

• امکانات اسکریپت نویسی را به برنامه خود به کمک Roslyn اضافه کنید | www.codeproject.com

• ساخت افزونه به کمک Rosyln | www.infoq.com

• مثال‌های کتاب iText in Action به زبان سی شارپ | kuujinbo.info

• نکاتی در مورد استفاده از SQL Server Compact در برنامه‌های وب | erikej.blogspot.com

• نوکیا و دو محصول ویندوز فون جدید | windowsteamblog.com

using System;

namespace Pivot.Sample1
{
    public class Expense
    {
        public DateTime Date { set; get; }
        public string Department { set; get; }
        public decimal Expenses { set; get; }
    }
}

using System;
using System.Collections.Generic;

namespace Pivot.Sample1
{
    public class ExpenseDataSource
    {
        public static IList<Expense> ExpensesDataSource()
        {
            return new List<Expense>
            {
                new Expense { Date = new DateTime(2011,11,1), Department = "Computer", Expenses = 100 },
                new Expense { Date = new DateTime(2011,11,1), Department = "Math", Expenses = 200 },
                new Expense { Date = new DateTime(2011,11,1), Department = "Physics", Expenses = 150 },

                new Expense { Date = new DateTime(2011,10,1), Department = "Computer", Expenses = 75 },
                new Expense { Date = new DateTime(2011,10,1), Department = "Math", Expenses = 150 },
                new Expense { Date = new DateTime(2011,10,1), Department = "Physics", Expenses = 130 },

                new Expense { Date = new DateTime(2011,9,1), Department = "Computer", Expenses = 90 },
                new Expense { Date = new DateTime(2011,9,1), Department = "Math", Expenses = 95 },
                new Expense { Date = new DateTime(2011,9,1), Department = "Physics", Expenses = 100 }
            };
        }
    }
}

using System.Collections;
using System.Linq;

namespace Pivot.Sample1
{
    public class PivotTable
    {
        public static IList ExpensesCrossTab()
        {
            return ExpenseDataSource
                        .ExpensesDataSource()
                        .GroupBy(t =>
                                   new
                                   {
                                       Year = t.Date.Year,
                                       Month = t.Date.Month
                                   })
                        .Select(myGroup =>
                                   new
                                   {
                                       //Year = myGroup.Key.Year,
                                       Month = myGroup.Key.Month,
                                       ComputerDepartment = myGroup.Where(x => x.Department == "Computer").Sum(x => x.Expenses),
                                       MathDepartment = myGroup.Where(x => x.Department == "Math").Sum(x => x.Expenses),
                                       PhysicsDepartment = myGroup.Where(x => x.Department == "Physics").Sum(x => x.Expenses)
                                   })
                        .ToList();
        }
    }
}

using System;

namespace Pivot.Sample2
{
    public class StudentStat
    {
        public int Id { set; get; }
        public string Name { set; get; }
        public DateTime Date { set; get; }
        public bool IsPresent { set; get; }
    }
}

using System;
using System.Collections.Generic;

namespace Pivot.Sample2
{
    public class StudentsStatDataSource
    {
        public static IList<StudentStat> CreateMonthlyReportDataSource()
        {
            var result = new List<StudentStat>();
            var rnd = new Random();

            for (int day = 1; day < 6; day++)
            {
                for (int student = 1; student < 6; student++)
                {
                    result.Add(new StudentStat
                    {
                        Id = student,
                        Date = new DateTime(2011, 11, day),
                        IsPresent = rnd.Next(-1, 1) == 0 ? true : false,
                        Name = "student " + student
                    });
                }
            }

            return result;
        }
    }
}

using System.Collections;
using System.Linq;

namespace Pivot.Sample2
{
    public class PivotTable
    {
        public static IList StudentsStatCrossTab()
        {
            return StudentsStatDataSource
                        .CreateWeeklyReportDataSource()
                        .GroupBy(x =>
                                  new
                                  {
                                      x.Id
                                  })
                        .Select(myGroup =>
                                  new
                                  {
                                      myGroup.Key.Id,
                                      Name = myGroup.First().Name,
                                      Day1IsPresent = myGroup.Where(x => x.Date.Day == 1).First().IsPresent,
                                      Day2IsPresent = myGroup.Where(x => x.Date.Day == 2).First().IsPresent,
                                      Day3IsPresent = myGroup.Where(x => x.Date.Day == 3).First().IsPresent,
                                      Day4IsPresent = myGroup.Where(x => x.Date.Day == 4).First().IsPresent,
                                      Day5IsPresent = myGroup.Where(x => x.Date.Day == 5).First().IsPresent,
                                      PresentsCount = myGroup.Where(x => x.IsPresent).Count(),
                                      AbsentsCount = myGroup.Where(x => !x.IsPresent).Count()
                                  })
                        .ToList();
        }
    }
}