How to get the MaxValue using LINQ ?!

Question

Hi there .

i am useing the following Code trying to get the maxValue from a list but it gives me an Exception (At least one object must implement IComparable) !

I need help to get a solution and explanation why this Exception

Hide Copy Code

public static TheQFromDB GetMaxWithLINQ (List<TheQFromDB> input)

{

TheQFromDB GetItem = input.First();

foreach (var item in input)

{

var max = input.OrderByDescending(s=> s.SecondsDiff).Max();

GetItem = item;

}

return GetItem;

}