C#: Upload a File in .NET MVC and Read the Contents of the File (ex: csv file)

The following will create an upload form on an MVC .NET view page and create the controller action to read the uploaded file line by line. This code is expecting a csv file.

copy
//form on page
<h1>Upload a CSV File</h1>
@using (Html.BeginForm("uploadfile", "home", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    <div>
        <input type="file" name="files" />
        <input type="submit" value="Upload" />
    </div>
}

//controller and action to handle the upload
[HttpPost]
public ActionResult UploadFile()
{
	//open file
	if (Request.Files.Count == 1)
	{
		//get file
		var postedFile = Request.Files[0];
		if (postedFile.ContentLength > 0)
		{
			//read data from input stream
			using (var csvReader = new System.IO.StreamReader(postedFile.InputStream))
			{
				string inputLine = "";

				//read each line
				while ((inputLine = csvReader.ReadLine()) != null)
				{
					//get lines values
					string[] values = inputLine.Split(new char[] { ',' });
					
					for (int x = 0; x < values.Length; x++)
					{
						//do something with each line and split value
					}
				}

				csvReader.Close();
			}
		}
	}

	return Redirect("/home/uploadfilepage");            
}