Even after some searching, I am not precisely clear about the differences between the NavigateUrl & EditUrl methods, and when should I use which one???

In would be extremely helpful, if somebody could explain precisely their differences, and intended uses???

Also, I passed a string "Action=Add" in cmdArgs of EdittUrl. How do I retrieve it on the destination control???

Can you please explain the parameters in the following overload of EditUrl:

"Public Function EditUrl(ByVal KeyName As String, ByVal KeyValue As String, ByVal ControlKey As String, ByVal ParamArray AdditionalParameters() As String) As String"

I mean every control (except the primary View Control) has a key associated to it. So, what does KeyName or KeyValue signify here??? What should be passed as their values?

Also, what are AdditionalParameters? Is there any special syntax to be used for strings being passed to AdditionalParameters???

Thanx!!!