LINQ:将数组[,]转换为array []

Question

我知道这是一个愚蠢的问题,但有没有人有一个优雅的(或非优雅的)LINQ方法将2D数组(object [,])转换为一维数组(object []),包括第一个维度2D阵列？

例:

        // I'd like to have the following array
        object[,] dim2 = {{1,1},{2,2},{3,3}};

        // converted into this kind of an array...  :)
        object[] dim1 = { 1, 2, 3 };

Answer 1

您声称自己想要a 1D array (object[]) comprised of the first dimension of the 2D array,所以我假设您正在尝试选择原始2D阵列的子集.

int[,] foo = new int[2, 3]
{
  {1,2,3},
  {4,5,6}
};

int[] first = Enumerable.Range(0, foo.GetLength(0))
                        .Select(i => foo[i, 0])
                        .ToArray();

// first == {1, 4}