一种安全的方式来传递在C＃中的数组或数组[] []对DLL [英] A SAFE way to pass an array or arrays[][] in C# to a DLL

问题描述

我有我想要传递到DLL数组的数组。我遇到错误有一个嵌套的数组没有封送处理支持。

I have an array of arrays that I want to pass into a DLL. I am running into the error "There is no marshaling support for nested arrays."

我可以通过一个单一的阵列中的罚款，但如果我堆叠起来失败。我需要/想传递数组的数组中的一个安全的方式。

I can pass a single array in fine but if I stack them up it fails. I need/want a "safe" way of passing in the array of arrays.

private static extern int PrintStuff(string[][] someStringsInGroups, int numberOfGroups, int[] lengthSetsInGroups);

编辑：我也愿意，有足够的挫折和痛苦，接受涉及编组的解决方案

I am also willing, with enough discouragement and anguish, to accept a solution involving marshaling.

推荐答案

您可以在双数组转换为一个单一的阵列（即压平）。这可以通过保持宽度和高度的变量，并访问指数作为这样来完成：

You could convert the double array to a single array (i.e. flatten it). This can be done by keeping width and height variables, and accessing the indices as such:

string atXY = someStringsInSingleArray[(y * width) + x];

阵列然后可以被转换为诸如：

The array can then be converted as such:

string * array = new string[width * height];

for (unsigned int y = 0; y < height; ++y)
{
    for (unsigned int x = 0; x < width; ++x)
    {
        array[(y * width) + x] = someStringsInGroups[x][y];
    }
}

// (pass single array to dll)

delete [] array;

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