Picture in C. Conversion method between BYTE [] and base64string

In C #

Image conversion 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 [] to Picture:

byte[] imageBytes = Convert.FromBase64String(pic);
// Read in MemoryStream Object 
MemoryStream memoryStream = new MemoryStream(imageBytes, 0, imageBytes.Length);
memoryStream.Write(imageBytes, 0, imageBytes.Length);
// Turn into a picture 
Image image = Image.FromStream(memoryStream);

In the current database development: the storage mode of pictures is CLOB: base64string

BLOB: Store byte []

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

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