Detailed explanation of the conversion method of image .BYTE[] and base64string in C#

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In C

#Conversion of image to byte[] and then to base64string:

Bitmap bmp = new Bitmap(filepath);
  MemoryStream ms = new MemoryStream();
  bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
  byte[] arr = new byte[ms.Length];
  ms.Position = 0;
  ms.Read(arr, 0, (int)ms.Length);
  ms.Close();
string   pic = Convert.ToBase64String(arr);

Conversion from base64string to byte[] and then to image:

byte[] imageBytes = Convert.FromBase64String(pic);
//读入MemoryStream对象
MemoryStream memoryStream = new MemoryStream(imageBytes, 0, imageBytes.Length);
memoryStream.Write(imageBytes, 0, imageBytes.Length);
//转成图片
Image image = Image.FromStream(memoryStream);

In current database development: images are generally stored in CLOB: storing base64string

BLOB: store byte[]

It is generally recommended to use byte[]. Because pictures can be directly converted to byte[] and stored in the database

If you use base64string, you need to convert from byte[] to base64string. More waste of performance.

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