C# Finding 3 largest values in a 2D Array -

currently, have 2d array assigned random values. know how find largest values this:

public static int largest( int[,] c) {     int largest = 0;     (int row = 0; row < c.getlength(0); row++)     {         (int col = 0; col < c.getlength(1); col++)         {             if( largest < c[ row, col])             {                 largest = c[ row, col];             }         }     }     return largest; } 

but want find 3 largest values , return sum. don't have restrictions in how find it, going method similar largest method wrote?

in c# have linq can in breeze:

var sum = c.cast<int>().orderbydescending(i => i).take(3).sum(); 

and that's all, converts array one-dimensional enumerable, orders biggest smalles, takes first 3 elements , sums them.