c# 三维数据取二维数据问题

Question

int[,,] data =
{
{
{0,0,0,0},
{0,0,1,1},
{0,1,0,0},
{0,0,0,0},
},
{
{0,1,0,0},
{0,1,0,0},
{0,0,0,0},
{1,0,0,0},
},
};
private void CopyData(int[,] desc, int[,] src)
{
for (int i = 0; i < src.GetLength(0); i++)
{
for (int j = 0; j < src.GetLength(1); j++)
{
desc[i, j] = src[i, j];
}
}
}
int[,] = new int[4,4];
CopyData( _arr,data[0]);为什么这样复制数据不行？

Answer 1

你的定义方式的问题，int[,,]是传统三维数组，并不能通过data[0]的方式取得第一维的二维数组，要达到你想要的效果应该使用交错数组定义
int[][][] data = new int[][][]
{
new int[][]{
new int[]{0,0,0,0},
new int[]{0,0,1,1},
new int[]{0,1,0,0},
new int[]{0,0,0,0},
},
new int[][]{
new int[]{0,1,0,0},
new int[]{0,1,0,0},
new int[]{0,0,0,0},
new int[]{1,0,0,0},
},
};
private void CopyData(int[][] desc, int[][] src)
{
for (int i = 0; i < src.Length; i++)
{
for (int j = 0; j < src[i].Length; j++)
{
desc[i][j] = src[i][j];
}
}
}
另外拷贝数组应该使用Array.Copy最好，是经过优化的拷贝，效率高