URL image convert to Base64 String

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=1788188399&allow_ip=&allow_referer=&signature=TaoNDWDIECD4NU%2BN4cPCTNIqQhM%3D");

' Base64 인코딩
base64Str  = Convert.ToBase64String(bytes)

※ 참고 사이트

https://stackoverflow.com/questions/11801630/how-can-i-convert-image-url-to-system-drawing-image