Save base64-encoded embedded picture to file

[Jörn Willhöft]

Hi there,

I have a form that has embedded picture attachments. IP stores these
internally as base64-encoded xml. Now I need to save these pictures into
files.

I tried the following JScript:

var node =
primaryDom.selectSingleNode("/dfs:myFields/myictures/my:rep_pict");

var fileSystem = new ActiveXObject("Scripting.FileSystemObject");
var file = fileSystem.CreateTextFile("c:\\test.jpeg", true);
file.write(node.text);
file.close();
fileSystem = null;

This does save the contents of the node to the file test.jpeg, BUT it is
still base64 encoded.

How do I decode the base64?
AND, if necessary, how do I create a non-text file from JScript?

Thank you very much,
Jörn

 

[S.Y.M. Wong-A-Ton]

The easiest way to do this is to let your form pass the base64string to a web
service or web page and let the web service/page do the rest. You can use the
Convert.FromBase64String method in your web service/page to decode the
base64string
(http://msdn.microsoft.com/library/e...vertClassFromBase64StringTopic.asp?frame=true).