c# 中使用foreach和for遍历 一维数组； 二维数组; 交错数组;

//一维数组
int[] iArray = new int[] { 1, 2, 3, 45, 6 };
foreach (int i in iArray)
Console.Write(i.ToString() + ",");
Console.WriteLine("\n\n");
//2级数组
int[,] i2Array = new int[,] { { 1, 2 }, { 3, 4 } };
foreach (int i1 in i2Array)
{
Console.Write(i1.ToString() + ",");
}
Console.WriteLine("\n\n");
//交错数组
int[][] CrossArray = new int[3][] { new int[]{ 1, 2 }, new int[]{ 3, 4, 5 }, new int[]{ 6, 7, 8, 9 } };
foreach (int[] c in CrossArray)
{
foreach (int i in c)
Console.Write(i.ToString() + ",");
Console.Write("\n");
}