When working with things like Email, it is sometimes necessary to decode a string of text that has been HTML-encoded. This is the process where special characters are replaced with their numerical equivalents to prevent misinterpretation of the HTML text.
You use it like this:
string xmlPacket = HttpUtility.HtmlDecode(input);
This method is found inside of System.Web, which seems to require full trust to run properly.
Since I’m running in the sandbox, I can only use partial trust assemblies.
Thankfully, the System.Net assembly has: WebUtility.HtmlDecode, which works exactly the same AND doesn’t cause us security issues.