Hi, If you allow, I would like to ask a question. Even though I did not provide action information in the form post operation in the View of the "Index Action" in the "Login Controller", the Index Action is running in the post operation. Although I did not provide action information in the post action in the "SubscribeMail View", the Subscribe Action to which it is connected does not work. Shouldn't the Action Method in the control it is connected to work by default? Note: SubscribeMail View is a partial view. Thanks

Different situations occur when action information is not given when the form is posted.

Accepted answer

AgaveJoe 29,361

Partial Views are rendered within another View. The code you've shared does not show the View that contains the partial or the controller that rendered the parent View. It would help if you provided this information.

With that being said, the browser will POST to the URL in the browser's address bar when the form element does not specify an action attribute. For example, if the SubscribeMail partial is rendered within the Views/Login/Index view then the URL in the browser is /Login assuming you are not using Areas. Clicking a submit button in this situation POSTs to the /Login/Index route.

It is important to mention that nested HTML forms is invalid HTML. I can't tell from the screenshots if you have this problem or not but it is possible given the partial contains a form element. Be careful to not nest HTML forms.

Lastly, when posting question on these forums it is best to post all the relevant source code using the "code block" button because gives the community an opportunity to copy the code and run a test based on your source code.

Yalçın Mete 80

I am very sorry.You are right.

Login/Index and SubscribeMail partial view pages are independent of each other. If I don't provide "action" information when I post the form under normal conditions (Login/Index), it goes to the default post method in the controller. Why doesn't this work in SubscribeMail, which has a partial view? I wanted to ask this. Is this because "SubscribeMail" is a partial view?

The page where the SubscribeMail partial view is located is BlogReadAll.cshtml :

 @model IEnumerable<EntityLayer.Concrete.Blog>
@{
    ViewData["Title"] = "BlogDetails";
    Layout = "~/Views/Shared/UserLayout.cshtml";
}
<!DOCTYPE html>
<html lang="zxx">
<body>
	<!--//banner-->
	<section class="banner-bottom">
		<!--/blog-->
		<div class="container">
			<div class="row">
				<!--left-->
				<div class="col-lg-8 left-blog-info-w3layouts-agileits text-left">
					@foreach (var item in Model)
					{	
					<div class="blog-grid-top">
						<div class="b-grid-top">
							<div class="blog_info_left_grid">
								<a href="single.html">
									<img src="~/CoreBlogTema/web/images/b1.jpg" class="img-fluid" alt="">
								</a>
							</div>
							<div class="blog-info-middle">
								<ul>
									<li>
										<a href="#">
												<i class="far fa-calendar-alt"></i> @(((DateTime)item.BlogCreateDate).ToString("dd-MMM-yyyy"))
										</a>
									</li>
									<li class="mx-2">
										<a href="#">
											<i class="far fa-thumbs-up"></i> 0 Beğeni
										</a>
									</li>
									<li>
										<a href="#">
											<i class="far fa-comment"></i> 0 Yorum
										</a>
									</li>
								</ul>
							</div>
						</div>
						<h3>
							<a href="single.html">@item.BlogTitle </a>
						</h3>
						<p>
							@item.BlogContent
						</p>
						<a href="single.html" class="btn btn-primary read-m">Blog Listesi</a>
					</div>
					}
					@await Component.InvokeAsync("CommentListByBlog", new {id = ViewBag.i})
					@* @await Html.PartialAsync("~/Views/Comment/_CommentListByBlog.cshtml") *@
					@await Html.PartialAsync("~/Views/Comment/PartialAddComment.cshtml")
				</div>
				<!--//left-->
				<!--right-->
				<aside class="col-lg-4 agileits-w3ls-right-blog-con text-right">
					<div class="right-blog-info text-left">
						<div class="tech-btm">
							<img src="/CoreBlogTema/web/images/banner1.jpg" class="img-fluid" alt="">
						</div>
						
						@await Html.PartialAsync("~/Views/NewsLetter/SubscribeMail.cshtml")
						
						@await Component.InvokeAsync("CategoryList")
						@await Component.InvokeAsync("WriterLastBlog")
						
						<div class="single-gd my-5 tech-btm">
							<h4>Our Progress</h4>
							<div class="progress">
								<div class="progress-bar progress-bar-striped" role="progressbar" style="width: 10%" aria-valuenow="10" aria-valuemin="0"
									 aria-valuemax="100"></div>
							</div>
							<div class="progress">
								<div class="progress-bar progress-bar-striped bg-success" role="progressbar" style="width: 25%" aria-valuenow="25" aria-valuemin="0"
									 aria-valuemax="100"></div>
							</div>
							<div class="progress">
								<div class="progress-bar progress-bar-striped bg-info" role="progressbar" style="width: 50%" aria-valuenow="50" aria-valuemin="0"
									 aria-valuemax="100"></div>
							</div>
							<div class="progress">
								<div class="progress-bar progress-bar-striped bg-warning" role="progressbar" style="width: 75%" aria-valuenow="75" aria-valuemin="0"
									 aria-valuemax="100"></div>
							</div>
							<div class="progress">
								<div class="progress-bar progress-bar-striped bg-danger" role="progressbar" style="width: 100%" aria-valuenow="100" aria-valuemin="0"
									 aria-valuemax="100"></div>
							</div>
						</div>
						<div class="single-gd tech-btm">
							<h4>Son yazılar</h4>
							<div class="blog-grids">
								<div class="blog-grid-left">
									<a href="single.html">
										<img src="images/b1.jpg" class="img-fluid" alt="">
									</a>
								</div>
								<div class="blog-grid-right">
									<h5>
										<a href="single.html">Pellentesque dui, non felis. Maecenas male</a>
									</h5>
								</div>
								<div class="clearfix"> </div>
							</div>
						</div>
					</div>
				</aside>
				<!--//right-->
			</div>
		</div>
	</section>
	<!--//main-->
	<!--footer-->
</body>
</html>

SubscribeMail.cshtml:

<div class="tech-btm">
	<form  method="post">
		<input type="email" id="txtmail" placeholder="Email" name="Mail">
		<input type="submit" id="btn" value="Abone Ol">
	</form>
</div>

NewsLetterController.cs (The controller where the SubscribeMail action is located)

using BusinessLayer.Concrete;
using DataAccessLayer.EntityFramework;
using EntityLayer.Concrete;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
namespace CoreDemo07062024.Controllers
{
	[AllowAnonymous]
	public class NewsLetterController : Controller
	{
		NewsLetterManager nm = new NewsLetterManager(new EfNewsLetterRepository());
		
		[HttpGet]
		public PartialViewResult SubscribeMail()
		{
			return PartialView();
		}

[HttpPost]
public IActionResult SubscribeMail(NewsLetter p)
{
	p.MailStatus = true;
	nm.AddNewsLetter(p);
	return PartialView();
}

Thanks

AgaveJoe 29,361 Reputation points

2024-06-28T14:52:26.37+00:00
Why doesn't this work in SubscribeMail, which has a partial view? I wanted to ask this. Is this because "SubscribeMail" is a partial view?

A partial view is a reusable block of HTML that can be rendered in any view. Basically all your doing is replacing the following line of code...

@await Html.PartialAsync("~/Views/NewsLetter/SubscribeMail.cshtml")

...with this block of code on the server...

<div class="tech-btm"> <form method="post"> <input type="email" id="txtmail" placeholder="Email" name="Mail"> <input type="submit" id="btn" value="Abone Ol"> </form> </div>

I think the concept you misunderstand is MVC routing. Views and partial views are not bound to a controller action. Rather routes (URL) invoke a controller action and the action returns a view.

There are other issues with your approach. For example, if the form actually POSTed to the SubscribeMail action, the result is HTML with no CSS, Layout, or the parent view's HTML. The browser would contain only HTML found in the partial.
Yalçın Mete 80 Reputation points

2024-06-28T15:23:02.0766667+00:00

"..With that being said, the browser will POST to the URL in the browser's address bar when the form element does not specify an action attribute..."

"..Views and partial views are not bound to a controller action. Rather routes (URL) invoke a controller action and the action returns a view..."

I understand now . I thought that if we did not provide action information in the form, it would call the "post action" to which view() is connected. But the important thing is the URL address. As you said, if the action information is empty, the post action is performed to the post method (/Blog/BlogReadAll/) in the URL address.

Thank you very much for your help

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Different situations occur when action information is not given when the form is posted.

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