What is ContentResult Asp.Net MVC? How to use ContentResult in Asp.Net Core MVC?

 In ASP.NET, the ContentResult class is used to return a plain string or a custom object as a response to an HTTP request. You can use it to return any content as the result of a controller action.

Here is an example of how to use ContentResult in ASP.NET:

csharp
using System.Web.Mvc;

public class HomeController : Controller
{
    public ActionResult Index()
    {
        string content = "Hello, world!";
        return Content(content);
    }
}

In this example, the Index action of the HomeController returns a string "Hello, world!" as the response content using the Content method.

You can also specify the content type of the response by passing a second parameter to the Content method, like this:

csharp
public ActionResult Index()
{
    string content = "<h1>Hello, world!</h1>";
    string contentType = "text/html";
    return Content(content, contentType);
}

In this example, the Index action returns an HTML string as the response content with the content type of "text/html".

You can also set the HTTP status code of the response by passing a third parameter to the Content method, like this:

csharp
public ActionResult Index()
{
    string content = "Hello, world!";
    string contentType = "text/plain";
    int statusCode = 200;
    return Content(content, contentType, statusCode);
}

In this example, the Index action returns a plain text string as the response content with the content type of "text/plain" and the HTTP status code of 200.

I hope this helps you understand how to use ContentResult in ASP.NET.