Array creation must have array size or array initializer error is caused by a line similar to the following:

string[] strMyArray = new string[];

And the problem with this line is that you create a new array but you don’t define a size. When you create an array you have to either define a size for the array, or declare its elements.

An example of defining the size of the array (in this case 4 elements) can be seen below:

string[] strMyArray = new string[3];

Remember that the count starts from 0, so the first element of the array is 0, the second is 1, the third is 2 and the fourth is 3.

For a multidimensional array, here’s an example:

string[] strMyArray = new string[3,5];

If you don’t want to specify the size of the array, you must specify the elements of the array at the same time of declaring it:

string[] strMyArray = {"Chrysler", "Dodge", "Cadillac", "GM"};