From PictureBox to DB (VB Code)

Dim fs As FileStream = File.Create("profile.jpg")
ProfilePictureBox.Image.Save(fs, Imaging.ImageFormat.Jpeg)
fs.Close()
fs = File.OpenRead("profile.jpg")
Dim ms As MemoryStream = New MemoryStream
fs.CopyTo(ms)

sqlCmd.Parameters.Add("@profilePic", SqlDbType.VarBinary).Value = ms.ToArray()

From Db To PictureBox (VB Code)

Dim readByte As Byte() = sqlReader("IMG_BYTE")
Dim ms As MemoryStream = New MemoryStream(readByte)
PictureBox1.Image= Image.FromStream(ms)

From Db To DatagridView (VB Code)

Dim img As Image    
Dim readByte As Byte() = sqlReader("IMG_BYTE")
Dim ms As MemoryStream = New MemoryStream(readByte)
img = Image.FromStream(ms)

Converting a byte array to base64 when you have the binary byte array (not a JSON string array of the byte values) is ridiculously expensive, and more importantly; it is totally unnecessary work, as you do not have to do convert it at all in modern browsers! The static URL.createObjectURL method creates a DOMString, a short browser-specific url, from the byte array, and you can use the resulting short string in img.src or similar.

This is infinitely faster than solutions that require chaining TextEncoder and btoa when all you need is to display an image received in a byte array form.

var blob = new Blob( [ uint8ArrayBuffer ], { type: "image/jpeg" } );
var imageUrl = URL.createObjectURL( blob );

This is using HTML5 APIs, and so will not work on Node or other JS based servers, of course.

// Simulate a call to Dropbox or other service that can
// return an image as an ArrayBuffer.
var xhr = new XMLHttpRequest();

// Use PlaceKitten as a sample image to avoid complicating
// this example with cross-domain issues.
xhr.open( "GET", "https://placekitten.com/200/140", true );

// Ask for the result as an ArrayBuffer.
xhr.responseType = "arraybuffer";

xhr.onload = function( e ) {
    // Obtain a blob: URL for the image data.
    var arrayBufferView = new Uint8Array( this.response );
    var blob = new Blob( [ arrayBufferView ], { type: "image/jpeg" } );
    var urlCreator = window.URL || window.webkitURL;
    var imageUrl = urlCreator.createObjectURL( blob );
    var img = document.querySelector( "#photo" );
    img.src = imageUrl;
};

xhr.send();

<h1>Demo of displaying an ArrayBuffer</h1>
<p><a href="http://jsfiddle.net/Jan_Miksovsky/yy7Zs/">Originally made by Jan Miksovsky</p>
<img id="photo"/>

Try this.

public Image byteArrayToImage(byte[] byteArrayIn)
{
     MemoryStream ms = new MemoryStream(byteArrayIn);
     Image returnImage = Image.FromStream(ms);
     return returnImage;
}

Source : C# Image to Byte Array and Byte Array to Image Converter Class

Maybe I'm missing something, but for me this one-liner works fine with a byte array that contains an image of a JPEG file.

Image x = (Bitmap)((new ImageConverter()).ConvertFrom(jpegByteArray));

EDIT:

See here for an updated version of this answer: How to convert image in byte array