Convert Image to Base64 string and Base64 string to Image in asp.net MVC application | ASPMANTRA | Asp.Net,MVC,AngularJs,Jquery,Javascript,Sql Server AND WCF snippets and tutorial

Convert Image to Base64 string and Base64 string to Image in asp.net MVC application

In this article I am going to explain how to convert Image to Base64 string and Base64 string to Image in asp.net MVC application.

Description:
In MVC application want to convert Image to Base64 and Base64 encoded string to Image.

Implementation:
Add empty controller to project. Create method to convert Image and Base64 encoded string.

Complete code to Controller :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using MvcApplication2017.Models;
using System.Security.Cryptography;
using System.Configuration;
using System.Net.Mail;
using System.Net;
using System.IO;
using System.Web.Security;
  
using System.Drawing;
namespace mvcapplication2017.Controllers
{
  
    public class LoginController : Controller
    {
        //
        // GET: /Login/
        DemoEntities db = new DemoEntities();
        public ActionResult Index()
        {
            return View();
        }

        public ActionResult ConvertImage()
        {
            ViewData["image"] = "/images/1.jpg";
            ViewData["base64"] = "false";
            return View();
        }
        [HttpPost]
        public ActionResult ConvertImage(string aspmantra)
        {
            string path = Server.MapPath(aspmantra);
            ViewData["base64"] = AspMantraImageToBase64(path);
            return View();
        }
        //Convert Image to base64
        public string AspMantraImageToBase64(string imagepath)
        {
            using (System.Drawing.Image image = System.Drawing.Image.FromFile(imagepath))
            {
                using (MemoryStream ms = new MemoryStream())
                {
                    string base64String;
                    image.Save(ms, image.RawFormat);
                    byte[] imageBytes = ms.ToArray();
                    base64String = Convert.ToBase64String(imageBytes);
                    return base64String;
                }
            }
        }
        [HttpPost]
        public ActionResult ConvertToBase64(string base64)
        {
            Image img = AspMantraBase64ToImage(base64);
            img.Save(Server.MapPath("~/images/aspmantra.jpg"));
            ViewData["image"] = "/images/aspmantra.jpg";
            ViewData["base64"] = "false";
            return View("ConvertImage");
        }
        //Convert base64 to image
        public System.Drawing.Image AspMantraBase64ToImage(string base64String)
        {
            byte[] imageBytes = Convert.FromBase64String(base64String);
            MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);
            ms.Write(imageBytes, 0, imageBytes.Length);
            System.Drawing.Image image = System.Drawing.Image.FromStream(ms, true);
            return image;
        }
    }
}



Complete source of View:

@{
    ViewBag.Title = "Convert Image to Base64 ";
}

@if (ViewBag.image != null)
{
using (Html.BeginForm("ConvertImage", "login", FormMethod.Post, new { enctype = "multipart/form-data" }))
{   <table>
    <tr><td>Image : </td><td><img src="@ViewBag.image" id="logo" name="logo" width="500px" /></td></tr>
        <tr><td></td><td><input id="aspmantra" name="aspmantra" type="hidden" value="@ViewBag.image" /></td></tr>
        <tr><td></td><td><input type="submit" id="base" value="Convert to Base64" /></td></tr>
    </table>   
}
}
@if (ViewBag.base64 != "false")
{
    using (Html.BeginForm("ConvertToBase64", "login", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    <table>
        <tr>
            <td>Base64 </td><td><textarea id="base64" name="base64" rows="10" cols="60">@ViewBag.base64</textarea>
            </td>
        </tr>
        <tr>
            <td></td>
            <td><input type="submit" id="image" value="Convert to Image" /></td>
        </tr>
    </table> 
}  
}



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