初始化数组
初始化一维数据
int[] a1 = new int[2];//默认值为0;
int[] a2 = new int[]{1,2};
//初始化等长二维数据
int [,] ab1 = new int [2,3];//默认值为0;
int [,] ab2 = new int [2,3]{{1,2,3},{4,5,6}};
//初始化不等长二维数据
int [][] abc = new int [2][];
abc[0] = new int[]{1,2};
abc[1] = new int[]{3,4,5,6};
//一步步初始化更有助于理解;
string[][] ColumnName = new string[3][];
ColumnName[0] = new string[1] { "aaa"};
ColumnName[1] = new string[] {"aaa","bbb" };
ColumnName[2] = new string[3] {"aaa","bbb","ccc" };