How to Read a Text File in ASP.NET MVC

In ASP.NET MVC, reading a text file from the server is a common task. Whether you're fetching configuration data or processing user-uploaded files, accessing text files efficiently is crucial. Let's explore a straightforward method to accomplish this task.

Using System.IO.File Class

The System.IO.File class in C# provides methods for reading and manipulating files. Here's a step-by-step guide:

  1. Identify the File Path:

    • Determine the path to your text file on the server. You can use Server.MapPath() to get the physical path relative to your application's root directory.
  2. Check File Existence:

    • Utilize System.IO.File.Exists() to verify if the file exists at the specified path.
  3. Read File Contents:

    • Once confirmed, employ System.IO.File.ReadAllText() to read the text file's contents into a string variable.
  4. Pass Data to View:

    • Transfer the file contents to the view for further processing or display using ViewBag or a strongly typed model.

Example Implementation

Here's a simple example of reading a text file in ASP.NET MVC:

using System.IO;
using System.Web.Mvc;

namespace YourNamespace.Controllers
    public class HomeController : Controller
        public ActionResult Index()
            string filePath = Server.MapPath("~/App_Data/yourfile.txt");

            if (System.IO.File.Exists(filePath))
                string fileContents = System.IO.File.ReadAllText(filePath);
                ViewBag.FileContents = fileContents;
                ViewBag.FileContents = "File not found.";

            return View();

Displaying File Contents in View

In the corresponding view (e.g., Index.cshtml), you can access ViewBag.FileContents to render the file contents dynamically.

    ViewBag.Title = "Home Page";

    <h2>File Contents:</h2>


Reading text files in ASP.NET MVC is a fundamental operation. By utilizing the System.IO.File class, you can easily access and manipulate text files on the server. Remember to handle file existence and permissions appropriately for robust file operations.

Best quality Asp .Net Ajax Control Toolkit tutorials.

Give your valuable comments.

7 + 5 =

About Us | Terms of Use | Privacy Policy | Disclaimer | Contact Us Copyright © 2012-2024 CodingFusion
50+ C# Programs for beginners to practice