I have browsed and uploaded a png/jpg file in my MVC web app. I have stored this file as byte[] in my database. Now I want to read and convert the byte[] to original file. How can i achieve this?
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4 Answers
- Create a MemoryStream passing the array in the constructor.
- Read the image from the stream using Image.FromStream.
- Call theImg.Save("theimage.jpg", ImageFormat.Jpeg).
Remember to reference System.Drawing.Imaging and use a using block for the stream.
1 Comment
CodeCaster
The Image roundtrip makes no sense if the byte array already contains a valid image. Just ues
File.WriteAllBytes() or whatever to directly write the byte array's contents to a file.Create a memory stream from the byte[] array in your database and then use Image.FromStream.
byte[] image = GetImageFromDatabase();
MemoryStream ms = new MemoryStream(image);
Image i = Image.FromStream(ms);
answered Jun 23, 2010 at 13:27
George Johnston
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Comments
May you have trouble with the mentioned solutions on DotNet Core 3.0 or higher
so my solution is:
using(var ms = new MemoryStream(yourByteArray)) {
using(var fs = new FileStream("savePath", FileMode.Create)) {
ms.WriteTo(fs);
}
}
Comments
Or just use this:
System.IO.File.WriteAllBytes(string path, byte[] bytes)
File.WriteAllBytes(String, Byte[]) Method (System.IO) | Microsoft Docs
