FAQ: How do I convert between an image object and Byte Array?

Question

How do I convert between an image object and Byte Array?

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Answer 1

You can convert between an image object and Byte Array by means of MemoryStream class.

Imports System.IO
Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim myImage As Image = Image.FromFile("D:\1.jpg")
        Dim imgByteArray As Byte() = Nothing

        'Image to byte[]      
        Dim imgMemoryStream As MemoryStream = New MemoryStream()
        myImage.Save(imgMemoryStream, System.Drawing.Imaging.ImageFormat.Jpeg)
        imgByteArray = imgMemoryStream.GetBuffer()

        'Byte[] to image      
        imgMemoryStream = New MemoryStream(imgByteArray)
        myImage = Drawing.Image.FromStream(imgMemoryStream)

    End Sub
End Class

 

For more FAQ about Visual Basic .NET General, please see Visual Basic .NET General FAQ 

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