I want to upload image in "wwwroot/uploads/img" folder but i get error.I wrote the following code:
Create View :
@model imageuploader.Models.Employee
<form method="post" enctype="multipart/form-data" asp-controller="Employee" asp-action="Create">
<div class="form-group">
<div class="col-md-10">
<input asp-for="FirstName" class="form-control" />
</div>
</div>
<div class="form-group">
<div class="col-md-10">
<input asp-for="LastName" Class="form-control" />
</div>
</div>
<div class="form-group">
<div class="col-md-10">
<input asp-for="ImageName" type="file" Class="form-control" />
</div>
</div>
<div class="form-group">
<div class="col-md-10">
<input type="submit" value="Create" />
</div>
</div>
Model :
public class Employee
{
[Key]
public int ID { get; set; }
[Required]
public string FirstName { get; set; }
[Required]
public string LastName { get; set; }
public string ImageName { get; set; }
}
Controller
private readonly RegisterDBContext _context;
private readonly IHostingEnvironment _appEnvironment;
public EmployeeController(RegisterDBContext context, IHostingEnvironment appEnvironment)
{
_context = context;
_appEnvironment = appEnvironment;
}
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Create(Employee emp)
{
if (ModelState.IsValid)
{
var files = HttpContext.Request.Form.Files;
foreach (var Image in files)
{
if (Image != null && Image.Length > 0)
{
var file = Image;
//There is an error here
var uploads = Path.Combine(_appEnvironment.WebRootPath, "uploads\\img");
if (file.Length > 0)
{
var fileName = Guid.NewGuid().ToString().Replace("-", "") + Path.GetExtension(file.FileName);
using (var fileStream = new FileStream(Path.Combine(uploads, fileName), FileMode.Create))
{
await file.CopyToAsync(fileStream);
emp.BookPic = fileName;
}
}
}
}
_context.Add(emp);
await _context.SaveChangesAsync();
return RedirectToAction("Index");
}
else
{
var errors = ModelState.Values.SelectMany(v => v.Errors);
}
return View(emp);
}
When i click on submit button i get an error (error line is marked), how can i upload image or file in Specified path?
Error:
NullReferenceException: Object reference not set to an instance of an object.
imageuploader.Controllers.EmployeeController+<Create>d__2.MoveNext() in EmployeeController.cs
var uploads = Path.Combine(_appEnvironmen.WebRootPath, "uploads\\img\\");
How can i upload image correctly in Specified path?
To upload the image, click on Choose File and then browse to the image which you want to upload. Once the image is selected then the name of the image will be displayed next to the Choose File button as shown in the following screenshot.
I Solved it. I understood i initial bad
_appEnvironment
in Constructor. With repeated edits, all of the codes in question are currently correct.
Thanks @Shyju user.
Here is how to upload an image in C# Asp.net core Web Application 2.1 MVC:
First I'm assuming you've created a model, added to db and now working in the controller.
I've created a Person model person model
For create get:
//Get : Person Create
public IActionResult Create()
{
return View();
}
post Action (please see screen shot) create post action method
Finally the view Create View
Project Output: Here is the output of my project
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