Declaring
Fixed Size Arrays
In C# the number inside the bracket represents the number of items in the array
int[] myArray1 = new int[3] { 1, 2, 3 };
int[] myArray2 = new int[] { 1, 2, 3 };
int[] myArray3 = { 1, 2, 3 };
var myArray4 = new[] {1, 2, 3}; // implicitly typed, inferred from items
System.Array myArray5 = System.Array.CreateInstance(typeof(System.Int32), 3);
When isize = 5, there are 5 elements, myArray(0) to myArray(4).
long[] myArray = new long[5];
int isize = 5;
long[] myArray = new long[isize];
long[] myArray = new long[3];
myArray[0] = 5;
myArray[1] = 10;
myArray.SetValue(15,2);
Not Zero Based
//1 dimensional - zero based
System.Array i2 = Array.CreateInstance(typeof(int), new int[] { 2 }, new int[] { 100 });
//1 dimensional - non zero based
System.Array myArray = Array.CreateInstance(typeof(double), new int[1] { 12 }, new int[1] { 1 });
Declaration and creation can be done in 2 steps or combined into 1 line
Values can be intialised or left as the defaults
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