Hi rani,
Check this example. Now please take its reference and correct your code.
Namespaces
using System.Collections.Generic;
using System.IO;
using System.Text;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
Controller
public class HomeController : Controller
{
private IHostingEnvironment Environment;
private IConfiguration Configuration;
public HomeController(IHostingEnvironment _environment, IConfiguration _configuration)
{
Environment = _environment;
Configuration = _configuration;
}
public IActionResult Index()
{
return View();
}
[HttpPost]
public IActionResult Text(List<IFormFile> postedFiles)
{
string path = Path.Combine(this.Environment.WebRootPath, "Uploads");
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
List<string> files = new List<string>();
foreach (IFormFile postedFile in postedFiles)
{
string fileName = Path.GetFileName(postedFile.FileName);
string filePath = Path.Combine(path, fileName);
using (FileStream stream = new FileStream(filePath, FileMode.Create))
{
postedFile.CopyTo(stream);
files.Add(filePath);
}
}
using (StreamWriter writer = new StreamWriter(Path.Combine(path, "Merge.txt")))
{
foreach (string file in files)
{
using (StreamReader reader = System.IO.File.OpenText(file))
{
writer.Write(reader.ReadToEnd() + System.Environment.NewLine);
}
}
}
return File(System.IO.File.ReadAllBytes(Path.Combine(path, "Merge.txt")), "text / plain", "Merge.txt");
}
}
View
@addTagHelper*, Microsoft.AspNetCore.Mvc.TagHelpers
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
</head>
<body>
<form asp-controller="Home" method="post" enctype="multipart/form-data">
<input type="file" name="postedFiles" multiple />
<input type="submit" value="Merge Text" asp-action="Text" />
</form>
</body>
</html>
