如何快速将 object[,] 转换为 double[,]? [英] How can I quickly up-cast object[,] into double[,]?

问题描述

我使用 Microsoft.Office.Interop.Excel 我得到一个 object[,] 类型的二维数组，它包含元素的 double.请注意，索引下限是 1 而不是默认的 0，但我可以轻松处理.

I using Microsoft.Office.Interop.Excel I get returned a 2D array of type object[,] which contains double for elements. Note that the index lower bound is 1 instead of the default 0, but I can deal with that easily.

如何使用.NET 3.5很好地将数组转换为double[,].(我的意思是简洁或紧凑).

How can nicely convert the array into double[,] using .NET 3.5. (by nicely I mean concise, or compact).

注意

double[] values_2 = values.Cast<double>().ToArray();

确实有效，但它按数组扁平化为一维结构.

does work, but it flattens by array into a 1D structure.

推荐答案

object[,] src = new object[2, 3];

// Initialize src with test doubles.
src[0, 0] = 1.0;
src[0, 1] = 2.0;
src[0, 2] = 3.0;
src[1, 0] = 4.0;
src[1, 1] = 5.0;
src[1, 2] = 6.0;

double[,] dst = new double[src.GetLength(0), src.GetLength(1)];
Array.Copy(src, dst, src.Length);

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