This is topic that has been discussed thousand times, however.
Classic approach is to use HttpPostedFile object, check if it's not null,
and save it.
Something like:

I am building a composite server control. I have defined an event for
my child control with Custom Event Arguments. I am using the bubbling
method to access the child control's events in the Parent control.
Still, my child control is not raising the event. What am I missing?

I need to alert the user when code behind in a user control encounters
certain data conditions. I'd like to do this with a MsgBox but I know that
code behind cannot call this function, at least not directly. Is there a way
to do this?

I was given the following code in response to a request to retrieving the
Web Root for a Project while at design time. However this does not do what I
need it to do. I am looking for the Current Project (which i assume is
objProject) and I am looking for its "Project Folder" ?

Hi All;
I am attempting to figure out how to add a user created control (test.ascx) to an ASP.NET page based on a user choice. I have created a simple page that uses session to keep track of the instantiated class. i have added to the class a simple public property (action) ...