in this session, we will discuss how to upload multiple files in asp.net core with file upload controller step by step
Create ASP.NET Core Project: open Visual Studio, create a new ASP.NET Core project
Select Empty Template on next screen and Click Ok button to Finish
Add Configurations: Open Startup.cs file in your project and add new configurations as given below:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
namespace SampleHtml
{
public class Startup
{
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc();
}
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseStaticFiles();
app.UseMvc(routes =>
{
routes.MapRoute(
name: "default",
template: "{controller=Product}/{action=Index}/{id?}");
});
}
}
}
UseStaticFiles(): In asp.net core by default directory for store static files (CSS files, js files, images )in wwwroot and default asp.net core applications will not serve(accessing ) static file for that we will use UsestaticFiles()middleware is required and for accessing default file(HTML files) we need UseDefaultFile() middleware is required Readmore about asp.net core middlewares.
Add a business model class(Entities Class): Create a new folder named as Models. In the Models folder, you will create new entities class as below(name as a like product):
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace SampleHtml.Models
{
public class Product
{
public string Id { get; set; }
public string Name { get; set; }
public double Price { get; set; }
public List<string> Photos { get; set; }
}
}
Add Controller: Create a new folder named Controllers in your project. In this folder, create a new controller named ProductController.cs as given below:
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using SampleHtml.Models;
namespace SampleHtml.controlles
{
[Route("Product")]
public class ProductController : Controller
{
[Route("")]
[Route("index")]
[Route("~/")]
public IActionResult Index()
{
return View("Index", new Product());
}
private IHostingEnvironment ihostingEnvironment;
public ProductController(IHostingEnvironment _ihostingEnvironment)
{
this.ihostingEnvironment = _ihostingEnvironment;
}
[Route("save")]
[HttpPost]
public IActionResult Save(Product product, IFormFile[] photos)
{
if (photos == null || photos.Length == 0)
{
return Content("File(s) not selected");
}
else
{
product.Photos = new List<string>();
foreach (IFormFile photo in photos)
{
var path = Path.Combine(this.ihostingEnvironment.WebRootPath, "images", photo.FileName);
var stream = new FileStream(path, FileMode.Create);
photo.CopyToAsync(stream);
product.Photos.Add(photo.FileName);
}
}
ViewBag.product = product;
return View("Success");
}
}
}
Add View: Add a new folder named Views. In this folder, add a new folder named Product and add new views as given below:
@model SampleHtml.Models.Product
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
<link rel="stylesheet" href="https://tutorialshelper.com/demo/Css/dynamictable.css">
</head>
<body>
<h1>How to upload multiple files in asp.net core</h1>
<form asp-controller="product" asp-action="save" method="post" enctype="multipart/form-data">
<table class="table blueTable" cellpadding="2" cellspacing="2">
<tr>
<td>Id</td>
<td>
<input type="text" asp-for="Id" />
</td>
</tr>
<tr>
<td>Name</td>
<td>
<input type="text" asp-for="Name" />
</td>
</tr>
<tr>
<td>Price</td>
<td>
<input type="text" asp-for="Price" />
</td>
</tr>
<tr>
<td>Photo</td>
<td>
<input type="file" name="photos" multiple="multiple" />
</td>
</tr>
<tr>
<td> </td>
<td><input type="submit" value="Save" /></td>
</tr>
</table>
</form>
</body>
</html>
Add Success Page: In Product folder, create a new view name as like Success.cshtml as given below:
@page
@model SampleHtml.Views.Product.SuccessModel
@{
}
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Success</title>
<link rel="stylesheet" href="https://tutorialshelper.com/demo/Css/dynamictable.css">
</head>
<body>
<h1>How to upload multiple files in asp.net core</h1>
<table class="table blueTable" cellpadding="2" cellspacing="2" border="1">
<tr>
<td>Id</td>
<td>@ViewBag.product.Id</td>
</tr>
<tr>
<td>Name</td>
<td>@ViewBag.product.Name</td>
</tr>
<tr>
<td>Price</td>
<td>@ViewBag.product.Price</td>
</tr>
<tr>
<td>Photo(s)</td>
<td>
@foreach (var photo in ViewBag.product.Photos)
{
<img src="~/images/@photo" width="120" />
}
</td>
</tr>
</table>
</body>
</html>
Add _ViewImports.cshtml page: Select Razor View Imports item and click Add button to Finish and Add Inside _ViewImports.cshtml file and TagHelpers library as given below:
_ViewImports.cshtml page:
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
Structure of your project look like given below:
Run Your project: you will Access Product action in Production controller with the following URL: http://localhost:44370/Demo/Index see the given below output
