How to delete a object from database in ASP.NET MVC?

Question

I want to delete a object from my database using ASP.NET MVC. I have connected to the database with Entity Framework. I have made this code for my controller named Delete.

// DELETE-POST
[HttpPost]
[ValidateAntiForgeryToken]
public IActionResult Delete(int? id)
{
    var obj = _db.Project.Find(id);

    if(obj == null)
    {
        return NotFound();
    }

    _db.Project.Remove(obj);
    _db.SaveChanges();

    return RedirectToAction("Index");
}

Then I created a button with a link to my controller

<a asp-action="Delete" class="btn btn-danger btn-lg text-white w-30">Delete</a>

I had expect that my object should disappear. But I get an issue when I press the button. It only returns a blank site with a message that the site does not work.

Does anyone have any ideas why?

Serge · Accepted Answer · 2021-02-27 17:02:27Z

2

You have to add Id to your ancor tag. Try to use this:

<a asp-controller="...Controller"   asp-action="Delete" 
       asp-route-id="@Model.Id" class="btn btn-danger btn-lg text-white w-30">
Delete</a>

answered Feb 27, 2021 at 17:02

Serge

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Comments

Mubassir Hasan · Accepted Answer · 2021-02-27 17:09:02Z

0

You need to pass id from view.

<a asp-action="Delete" asp-route-id="@Model.Id" class="btn btn-danger btn-lg text-white w-30">Delete</a>

answered Feb 27, 2021 at 17:09

Mubassir Hasan

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1 Comment

Daniel Eriksson Over a year ago

Solved the problem! Thank you so much !

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