InfoPath Dev

Pretty fuzzy on my C# so I'm looking for an example code that takes date from datepicker and subtracts from Today and writes to read only text box.  Days would be good but ideally it would compute years months and days as a pretty little string for the txtbox.   Im alos looking for the best resources for writing code in ...

I am trying to make a set of controls requied based on a users input.  They select an option and depending on their selection a set of controls is now required. 

Looks like it worked just fine, thank you very much - do you know of a good site or book to explain working with XML and C#?  My C# is a littel rusty but I have very little experience coding with XML

I have a form that is going to be updated on a regular basis and I would like to be able to reflect the date a certain text box was last updated for use in a dashboard.  I have some C# experience but I'm not sure the best way to go about it.  I'm not sure if the 'Changed' event will be able to handle it or what.  Any ...