Tag: mvc

To force Web API to read a simple type from the request body, add the [FromBody] attribute to the parameter:

public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

[Route("hello2"), HttpPost]
public JsonResult Hello2([FromBody] Person person)
{
    string output = $@"Hello {person.FirstName} {person.LastName}";
    return Json(output);
}

When a parameter has [FromBody], Web API uses the Content-Type header to select a formatter. In this example, the content type is “application/json” and the request body is a raw JSON string (not a JSON object).

References
https://docs.microsoft.com/en-us/aspnet/web-api/overview/formats-and-model-binding/parameter-binding-in-aspnet-web-api

Send JSON Content welcome note based on user type

using System;  
using System.Collections.Generic;  
using System.Text;  
using System.Web.Mvc;  
using System.Web.Script.Serialization;  
using JsonResultDemo.Models;  
  
namespace JsonResultDemo.Controllers  
{  
    public class JsonDemoController : Controller  
    {  
        #region ActionControllers  
  
        /// <summary>  
        /// Welcome Note Message  
        /// </summary>  
        /// <returns>In a Json Format</returns>  
        public JsonResult WelcomeNote()  
        {  
            bool isAdmin = false;  
            //TODO: Check the user if it is admin or normal user, (true-Admin, false- Normal user)  
            string output = isAdmin ? "Welcome to the Admin User" : "Welcome to the User";  
  
            return Json(output, JsonRequestBehavior.AllowGet);  
        }  
     }  
}

Get the list of users in JSON Format

/// <summary>  
/// Update the user details  
/// </summary>  
/// <param name="usersJson">users list in JSON Format</param>  
/// <returns></returns>  
[HttpPost]  
public JsonResult UpdateUsersDetail(string usersJson)  
{  
    var js = new JavaScriptSerializer();  
    UserModel[] user = js.Deserialize<UserModel[]>(usersJson);  
  
    //TODO: user now contains the details, you can do required operations  
    return Json("User Details are updated");  
}

References
https://www.c-sharpcorner.com/UploadFile/2ed7ae/jsonresult-type-in-mvc/
https://stackoverflow.com/questions/227624/asp-net-mvc-controller-actions-that-return-json-or-partial-html