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ASP.NET MVC Hosting - HostForLIFE.eu :: How to Mapping with Conditional Display in a ASP.NET MVC Application?

clock August 27, 2024 07:47 by author Peter

Keeping resumes organized across several job vacancies is essential in the recruitment business. This blog post explores the effective mapping of resumes to various job listings within a.NET MVC application. We'll go over the structure of the database, the reasoning needed to link resumes to job IDs, and the procedures to make sure that resumes associated with closed jobs are removed from consideration for open positions.

With the help of this guide, you will be able to optimize your job and resume management process in.NET MVC, regardless of whether you're creating a recruiting portal or improving existing HR administration system.

Here's how to approach your.NET MVC project to meet the requirements.

1. Database Design

  • Job Table
    • JobID (Primary Key)
    • JobStatus (e.g., Active, Closed)
  • Resume Table
    • ResumeID (Primary Key)
    • Other resume details.
  • JobResumeMapping Table
    • JobID (Foreign Key to Job Table)
    • ResumeID (Foreign Key to Resume Table)
    • MappingID (Primary Key for the table)

2. Mapping Resumes to Different Job IDs
You would create or update records in the JobResumeMapping table to map resumes to different jobs.
Example method to map a resume to a job.

public void MapResumeToJob(int jobId, int resumeId)
{
    using (var context = new YourDbContext())
    {
        var mapping = new JobResumeMapping
        {
            JobID = jobId,
            ResumeID = resumeId
        };
        context.JobResumeMappings.Add(mapping);
        context.SaveChanges();
    }
}

3. Preventing Resume from Showing in Other Jobs once the Job is closed
You should filter out resumes mapped to closed jobs.
Example of how to do it in a query.

    var openJobsWithResumes = context.JobResumeMappings
                                      .Where(jrm => jrm.Job.JobStatus == "Active")
                                      .Include(jrm => jrm.Resume)
                                      .ToList();


Alternatively, you can use a method to update the status of the job and remove the mapping.
public void CloseJob(int jobId)
{
    using (var context = new YourDbContext())
    {
        var job = context.Jobs.Find(jobId);
        if (job != null)
        {
            job.JobStatus = "Closed";
            context.SaveChanges();
        }
    }
}


4. Ensure UI Logic
In your view, only show resumes linked to jobs that are not closed.

@foreach (var job in Model.Jobs)
{
    if (job.JobStatus == "Active")
    {
        // Display resumes mapped to this job
    }
}

5. Additional Considerations
To preserve referential integrity, you could also choose to use update operations or cascade deletes. The mappings must to be updated or eliminated in the event that a job is deleted.

6. Business Logic in the Controller

Make sure the logic for closing jobs and filtering resumes is handled by your controller methods.
Your demands for matching resumes to various jobs should be met by this configuration, which also makes sure that resumes linked to closed jobs are removed from consideration for open positions.



ASP.NET MVC Hosting - HostForLIFE.eu :: Managing Large Session States in ASP.NET MVC

clock August 20, 2024 07:10 by author Peter

It is crucial to adhere to recommended practices when working with big session states in ASP.NET MVC in order to guarantee optimum speed and scalability. The following are suggested best practices.


Minimize Session Data

Only keep the most important information in the session state. Steer clear of storing bulky items or intricate data structures that can needlessly expand the session size.

// Instead of storing a large object in the session
public IActionResult ActionName()
{
    var largeObject = GetLargeObject(); // Assuming this returns a large object
    HttpContext.Session.SetObject("LargeObject", largeObject); // Avoid storing large objects

    // Store only the essential data
    HttpContext.Session.SetString("UserName", "csharpcorner");
    HttpContext.Session.SetInt32("Age", 25);

    return View();
}

Use Serializable Objects
Ensure that the objects you store in the session state are serializable. This means that the objects can be converted to a stream of bytes for storage and later deserialized when needed.

[Serializable]
public class UserData
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public IActionResult ActionName()
{
    var userData = new UserData
    {
        Name = "Hostforlife",
        Age = 25
    };

    HttpContext.Session.SetObject("UserData", userData);

    return View();
}


Implement Session State Compression
ASP.NET provides built-in support for compressing session data before storing it. This can significantly reduce the size of the session state. You can enable compression in the web.config.
<system.web>
  <sessionState mode="InProc" compressionEnabled="true" />
</system.web>


Use a Distributed Cache
Instead of storing large session data on the server, consider using a distributed cache like Redis or Memcached. These caching solutions can store session data more efficiently and provide better scalability for web farm scenarios.

Install the necessary NuGet packages (e.g., Microsoft.Extensions.Caching.Redis) and configure the distributed cache in the Startup.cs
public void ConfigureServices(IServiceCollection services)
{
    services.AddDistributedRedisCache(options =>
    {
        options.Configuration = "localhost:6379"; // Redis server connection string
    });

    // Other service configurations
}

Then, use the distributed cache in your controller actions.
public IActionResult CacheAction(IDistributedCache cache)
{
    var userData = new UserData
    {
        Name = "Hostforlife",
        Age = 25
    };

    cache.SetString("UserData", JsonConvert.SerializeObject(userData));

    // Retrieve the cached data

    return View();
}


Implement Session State Expiration
Set appropriate expiration times for session data to ensure that stale data is removed from the session state. This can help reduce the overall size of the session state.
public void ConfigureServices(IServiceCollection services)
{
    services.AddSession(options =>
    {
        options.IdleTimeout = TimeSpan.FromMinutes(30); // Session will expire after 30 minutes of inactivity
    });

    // Other service configurations
}

Use Asynchronous Session State
ASP.NET provides an asynchronous session state option that can improve performance by allowing other requests to be processed while waiting for session state operations to complete.
public async Task<IActionResult> AsyncAction()
{
    await HttpContext.Session.LoadAsync();

    // Perform session state operations asynchronously
    HttpContext.Session.SetString("UserName", "Hostforlife");

    return View();
}


Implement Caching Strategies
Implement caching strategies to reduce the need for storing large amounts of data in the session state. For example, you can cache frequently accessed data in memory or use a distributed cache.

Conclusion

In order to manage file upload and download, we constructed a straightforward ASP.NET Core MVC application in this tutorial. To keep the application safe, we went over the fundamentals of building models, controllers, and views as well as security recommended practices.



ASP.NET MVC Hosting - HostForLIFE.eu :: Understanding MVC in ASP.NET Core

clock August 13, 2024 09:22 by author Peter

Model-View-Controller (MVC) is a design pattern that has been widely used in software engineering for creating well-structured and maintainable applications. In the context of .NET Core, MVC provides a robust framework for building web applications, separating concerns between the data (model), the user interface (view), and the business logic (controller).

This article will delve into what MVC is, how it works in .NET Core, and how you can build a simple MVC application.

What is MVC?
MVC stands for Model-View-Controller, a pattern that divides an application into three interconnected components.

Model

  • Represents the data and the business logic of the application.
  • Directly manages the data, logic, and rules of the application.
  • In .NET Core, the model can be an entity class that represents data in the database.

View

  • Represents the presentation layer of the application.
  • Responsible for displaying the data provided by the model in a user-friendly format.
  • Views in .NET Core are typically Razor files (.cshtml) that generate HTML dynamically.

Controller

  • Acts as an intermediary between the Model and the View.
  • Handles user input, processes it using the model, and returns the appropriate view.
  • In .NET Core, controllers are classes that inherit from the Controller and contain action methods.

How does MVC Work in .NET Core?
When a user interacts with an MVC application, the flow of control follows these steps.

User Request: The user sends a request, such as clicking a link or submitting a form.
Controller Action: The request is routed to a controller action method. The controller processes the request, interacts with the model if necessary, and selects a view to render.
View Rendering: The view receives the data from the controller and generates the HTML to be displayed to the user.
Response: The HTML generated by the view is sent back to the user's browser, where it is rendered.

Creating a Simple MVC Application in .NET Core
Let's walk through creating a simple MVC application in .NET Core.

Step 1. Setting Up the Project

You can start by creating a new MVC project in .NET Core using Visual Studio or the .NET CLI.
dotnet new mvc -n MvcDemoApp

This command creates a new MVC project named MvcDemoApp.

Step 2. Understanding the Project Structure
In an MVC project, you'll find three main folders.

  • Models: Contains the classes that represent the application's data and business logic.
  • Views: Contains the .cshtml files that define the HTML structure of the application.
  • Controllers: Contains the controller classes that manage the flow of the application.

Step 3. Creating a Model
Let's create a simple model that represents a product.
namespace MvcDemoApp.Models
{
    public class Product
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public decimal Price { get; set; }
    }
}
Step 4. Creating a ControllerNext, create a controller to handle requests related to products.
using Microsoft.AspNetCore.Mvc;
using MvcDemoApp.Models;

namespace MvcDemoApp.Controllers
{
    public class ProductsController : Controller
    {
        public IActionResult Index()
        {
            var products = new List<Product>
            {
                new Product { Id = 1, Name = "Laptop", Price = 1200 },
                new Product { Id = 2, Name = "Smartphone", Price = 800 }
            };

            return View(products);
        }
    }
}
The Index action method returns a list of products to the view.
Step 5. Creating a View
Finally, create a view to display the list of products. Add an Index.cshtml file under Views/Products.@model IEnumerable<MvcDemoApp.Models.Product>

<h2>Product List</h2>

<table class="table">
    <thead>
        <tr>
            <th>Name</th>
            <th>Price</th>
        </tr>
    </thead>
    <tbody>
        @foreach (var product in Model)
        {
            <tr>
                <td>@product.Name</td>
                <td>@product.Price</td>
            </tr>
        }
    </tbody>
</table>

This view displays the product data in an HTML table.

Step 6. Running the Application
Benefits of Using MVC

  • Separation of Concerns: MVC promotes a clear separation between the application's concerns, making it easier to manage and scale.
  • Reusability: The separation of concerns allows for more reusable code components.
  • Testability: The MVC pattern enhances the testability of your application by decoupling the components.

Conclusion
The MVC pattern in .NET Core provides a clean and organized way to develop web applications by separating the application into three core components: Model, View, and Controller. This separation makes your application more manageable, scalable, and testable. By following the steps outlined in this article, you can start building your own MVC applications in .NET Core and take advantage of the powerful features it offers.

 



About HostForLIFE.eu

HostForLIFE.eu is European Windows Hosting Provider which focuses on Windows Platform only. We deliver on-demand hosting solutions including Shared hosting, Reseller Hosting, Cloud Hosting, Dedicated Servers, and IT as a Service for companies of all sizes.

We have offered the latest Windows 2016 Hosting, ASP.NET Core 2.2.1 Hosting, ASP.NET MVC 6 Hosting and SQL 2017 Hosting.


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