Convert 2 dimensional array

Solution 1:

If you mean a jagged array (T[][]), SelectMany is your friend. If, however, you mean a rectangular array (T[,]), then you can just enumerate the date data via foreach - or:

int[,] from = new int[,] {{1,2},{3,4},{5,6}};
int[] to = from.Cast<int>().ToArray();

Solution 2:

SelectMany is a projection operator, an extension method provided by the namespace System.Linq.

It performs a one to many element projection over a sequence, allowing you to "flatten" the resulting sequences into one.

You can use it in this way:

int[][] twoDimensional = new int[][] { 
                                      new int[] {1, 2},
                                      new int[] {3, 4},
                                      new int[] {5, 6}
                                     };

int [] flattened = twoDimensional.SelectMany(x=>x).ToArray();