웹상에 이미지를 Base64 인코딩해서 저장 할 때
VB.net
WebClient wc = new WebClient();
byte[] bytes = wc.DownloadData("https://blog.kakaocdn.net/dna/r7sss/btquy1QuriI/AAAAAAAAAAAAAAAAAAAAACA3TW7VgXbuG-ic9CExuJqyVJZ_hYyeLzr2xfvp9rgc/img.png?credential=yqXZFxpELC7KVnFOS48ylbz2pIh7yKj8&expires=1785509999&allow_ip=&allow_referer=&signature=%2Fj32hfe%2FyZ%2Ffo8mlPOMJ2Kjk2Sg%3D");
' Base64 인코딩
base64Str = Convert.ToBase64String(bytes)
※ 참고 사이트
https://stackoverflow.com/questions/11801630/how-can-i-convert-image-url-to-system-drawing-image