A jagged array in C# is an array of array.Its a special kind of two dimensional array in which the length of each row is different.
type[ ] [ ] array-name = new type[size][ ];
Where array-name is the name of the jagged array, and size is the number of rows in that array.
int jaggedArray = new int;
Here jagged array contains 2 rows,where the size of first row is 3 and the size of second row is 4.