Just a followup to what I blogged earlier today. Using System.DateTime, one can implement a generic kind of caching in a snap. In the class of your choice:
string oldFile = "/path/to/file"
DateTime fileTime;
DateTime timeNow;
DateTime fileTimePlus;
if ( File.Exists( oldFile )) {
fileTime = File.GetLastWriteTime( oldFile );
timeNow = DateTime.Now;
fileTimePlus = fileTime.AddDays( 1 );
if ( timeNow > fileTimePlus ) {
...do stuff...
So at the do stuff part then you can make a descision about downloading another file, generating another file…on and on.
