c#如何将2D数组拆分为更小的2D数组(块)的列表？

public List<int[,]> Split2DArray(int[,] array, int blockSize)
{
    List<int[,]> blocks = new List<int[,]>();

    int rows = array.GetLength(0);
    int cols = array.GetLength(1);

    for (int i = 0; i < rows; i += blockSize)
    {
        for (int j = 0; j < cols; j += blockSize)
        {
            int blockRows = Math.Min(blockSize, rows - i);
            int blockCols = Math.Min(blockSize, cols - j);

            int[,] block = new int[blockRows, blockCols];

            for (int k = 0; k < blockRows; k++)
            {
                for (int l = 0; l < blockCols; l++)
                {
                    block[k, l] = array[i + k, j + l];
                }
            }

            blocks.Add(block);
        }
    }

    return blocks;
}