generically convert to target type

[John A Grandy]

How to generically convert an object to a target type ?

So .... I'm looking for something like :

DateTime value = new DateTime( 2008, 9, 18, 8, 35, 31, 10 );
System.Type targetType = typeof(TimeSpan);
object convertedValue = ConvertToType( value, targetType );

public static object ConvertToType( object value, System.Type targetType )
{
return Convert.ToType( value, targetType ); // Convert.ToType()
doesn't exist
}

[Marc Gravell]

Well, there is Convert.ChangeType which works in the way you ask - but
note that there is no sensible conversion defined from DateTime to
TimeSpan. If you /want/ a timespan from a DateTime, then you usually
mean "the offset from [this] origin", so just use subtraction
(DateTime - DateTime =TimeSpan).

Marc