Convert Image to byte or Base64 String

• We have to just provide input stream as "FileUpload1.PostedFile.InputStream" to below function

Image Stream to Byte :-

public static byte[] StreamToByte(Stream input)
        {
            byte[] buffer = new byte[input.Length];
            using (MemoryStream ms = new MemoryStream())
            {
                int read;
                while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
                {
                    ms.Write(buffer, 0, read);
                }
                return ms.ToArray();
            }
        }

Image Stream to Base64String :-

public static string StreamToBase64(Stream input)
        {
            byte[] buffer = new byte[input.Length];
            using (MemoryStream ms = new MemoryStream())
            {
                int read;
                while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
                {
                    ms.Write(buffer, 0, read);
                }
                string temp_inBase64 = Convert.ToBase64String(ms.ToArray());
                return temp_inBase64;
            }
        }