public class Customer
{
    public string Password { get; set; }
    public string Stno { get; set; }
    public int value { get; set; }
    public bool Active { get; set; }
}

public class RequestContext
{
    public int VamValue { get; set; }
    public Customer student { get; set; }
}

public class ResponseContext
{
    public string Response { get; set; }
}

public abstract class GetVam
{
    protected readonly GetVam successor;
    
    public GetVam(GetVam _getVam)
    {
        this.successor = _getVam;
    }

    public abstract ResponseContext execute(RequestContext requestContext);
}

public class CheckUseractive : GetVam
{
    public CheckUseractive(GetVam _getVam) : base(_getVam)
    {
    }

    public override ResponseContext execute(RequestContext requestContext)
    {
        if (requestContext.student.Active == true)
        {
            return successor.execute(requestContext);
        }

        else
        {

            return new ResponseContext
            {
                Response = "student is inactive"
            };
        }
    }
}

public class ChechPassword : GetVam
{
    public ChechPassword(GetVam _getVam) : base(_getVam)
    {
    }

    public override ResponseContext execute(RequestContext requestContext)
    {
        if (requestContext.student.Password == "123")
        {
            return successor.execute(requestContext);
        }
        else
        {
            return new ResponseContext
            {
                Response = "invalid pass",
            };
        }
    }
}

public class ChechUserBedehkar : GetVam
{
    public ChechUserBedehkar(GetVam _getVam) : base(_getVam)
    {
    }

    public override ResponseContext execute(RequestContext requestContext)
    {
        if (requestContext.student.value < requestContext.VamValue)
        {
            return successor.execute(requestContext);
        }
        else
        {
            return new ResponseContext
            {
                Response = "you are dont permission"
            };
        }
    }
}

public class AssignVam : GetVam
{
    public AssignVam(GetVam _getVam) : base(_getVam)
    {
    }

    public override ResponseContext execute(RequestContext requestContext)
    {
        return new ResponseContext
        {
            Response = "value of vam: " + (requestContext.VamValue - requestContext.student.value).ToString();
        };
    }
}

partial class Program
{
    static void Main(string[] args)
    {
        Customer customer = new Customer()
        {
            Active = true,
            Password = "123",
            Stno = "111",
            value = 2000

        };

        RequestContext requestContext = new RequestContext()
        {

            student = customer,
            VamValue = 3000,
        };

        var GetVam = new CheckUseractive(new ChechPassword(new ChechUserBedehkar(new AssignVam(null))));
        var res = GetVam.execute(requestContext);
        Console.Write(res.Response);
        Console.ReadKey();
    }
}

This article will show you how to implement a reverse proxy in C# and .NET Core to overcome specific needs that you could hardly solve with an out-of-the-box software. You can find the code of the final project on this GitHub repository.

Irresponsible ownership of data is the cause of many leaked emails, data, and other damaging information. Securing a user’s personal information is the job of software developers. If you, as a developer, can decrypt the information stored in the database of the system you are working on, then so can anyone else. In Cryptography in .NET Succinctly, Dirk Strauss will take readers through generating cryptographic signatures, hashing and salting passwords, and when and how to use symmetric vs. asymmetric encryption. 

Architecting and Implementing Domain-Driven Design Patterns with Microsoft .NET 

Database Engineering Complete Course | DBMS Complete Course
In this program, you’ll learn:
Core techniques and methods to structure and manage databases.
Advanced techniques to write database driven applications and advanced data modeling concepts.
MySQL database management system (DBMS) and data creation, querying and manipulation.
How to code and use Python Syntax
How to prepare for technical interviews for database engineer roles.
 

These are some key features of the framework itself:

Today we announced the general availability of SQL Server 2016, the world’s fastest and most price-performant database for HTAP (Hybrid Transactional and Analytical Processing) with updateable, in-memory columnstores and advanced analytics through deep integration with R Services. Software applications can now deploy sophisticated analytics and machine learning models in the database resulting in 100x or more speedup in time to insight, compared to deployments of such models outside of the database.