Injecting a service into a view in MVC 6

 

Asp.net MVC 6 supports injecting service to view using a class.

Example :- When country combo box value get changed , region com

Only restriction is that class should be

• Public
• Non-nested
• Non-Abstract

1. Create a Asp.Net Project in Visual Studio 2015

 

 

2. Create a folder name services and add a service class.

1. using System;
2. using System.Threading.Tasks;
3.  
4. namespace ViewInjection.Services
5. {
6.     public class EmployeeService
7.     {
8.         public async Task<int> GetEmployeesOnLeaveCount()
9.         {
10.             return await Task.FromResult(5);
11.         }
12.  
13.         public async Task<int> GetEmployeesOnSiteCount()
14.         {
15.             return await Task.FromResult(
16.                 10);
17.         }
18.  
19.         public async Task<int> GetEmployeesOnWorkCount()
20.         {
21.             return await Task.FromResult(97);
22.         }
23.     }
24. }

 

2. Create a View to show Employee statistics and add the inject statement to the top of the file.

1. @inject ViewInjection.Services.EmployeeService EmployeeService
2. @{
3.      ViewBag.Title = "Employee Page";
4. }

3. Call the service as below

1.  
2. @inject ViewInjection.Services.EmployeeService EmployeeService
3. @{
4.      ViewBag.Title = "Employee Page";
5. }
6.  
7. <h3>Employee Stats</h3>
8. <ul>
9.     <li>On Leave: @await EmployeeService.GetEmployeesOnLeaveCount()</li>
10.     <li>On Site:@await EmployeeService.GetEmployeesOnSiteCount()</li>
11.     <li>On Work:@await EmployeeService.GetEmployeesOnWorkCount()</li>
12. </ul>

4. Register the EmployeeService class in the Startup.cs file.

1. public void ConfigureServices(IServiceCollection services)
2.       {
3.           // Add EF services to the services container.
4.           services.AddEntityFramework(Configuration)
5.               .AddSqlServer()
6.               .AddDbContext<ApplicationDbContext>();
7.  
8.           // Add Identity services to the services container.
9.           services.AddDefaultIdentity<ApplicationDbContext, ApplicationUser, IdentityRole>(Configuration);
10.  
11.           // Add MVC services to the services container.
12.           services.AddMvc();
13.           
14.           services.AddTransient<ViewInjection.Services.EmployeeService>();
15.  
16.       }

5. Add a action method in HomeController.cs

1.  
2. public IActionResult EmployeeStaticstics()
3. {
4.     return View();
5. }

6.Run your code you will see the output as below.

Happy Coding !!