在 C# 中将多维数组转换为锯齿状数组

问题描述

我有一个 C# WCF webservice，它被两个 VB 6 项目调用.目标 VB 项目正在向客户端 VB 项目发送一个多维数组.

I have a C# WCF webservice which is called by two VB 6 project. The target VB project is sending to the client VB project a multidimensional array.

我想将多维数组转换为锯齿状数组，但我没有运气.

I want to convert the multidimensional array to a jagged array but i have no luck.

如何在对象[,] 中找到能够初始化锯齿状数组的元素数量?

How can i find the number of olements in my object[,] to be able to initialize the jagged array ?

我想按照这个问题的答案但我的对象上没有 GetLength 方法.

I want to follow the answer from this question but i don't have a GetLength method on my object.

我试过:

int firstElement = astrManTfrLetters.GetLength(0);
int secondElement = astrManTfrLetters.GetLength(1);

然后我就卡在这里了.

推荐答案

通常所提出的解决方案假设基于 0 的索引，但情况并非总是如此，主要是如果您在客户端上处理 object[,] 用于 Microsoft Excel.

Usually the solutions presented assume 0-based indices but that's not always the case, mainly if on the client you are dealing with object[,]'s for Microsoft Excel.

这是任何索引的解决方案:

Here is a solution for any indices:

internal static class ExtensionMethods
{
    internal static T[][] ToJaggedArray<T>(this T[,] twoDimensionalArray)
    {
        int rowsFirstIndex = twoDimensionalArray.GetLowerBound(0);
        int rowsLastIndex = twoDimensionalArray.GetUpperBound(0);
        int numberOfRows = rowsLastIndex + 1;

        int columnsFirstIndex = twoDimensionalArray.GetLowerBound(1);
        int columnsLastIndex = twoDimensionalArray.GetUpperBound(1);
        int numberOfColumns = columnsLastIndex + 1;

        T[][] jaggedArray = new T[numberOfRows][];
        for (int i = rowsFirstIndex; i <= rowsLastIndex; i++)
        {
            jaggedArray[i] = new T[numberOfColumns];

            for (int j = columnsFirstIndex; j <= columnsLastIndex; j++)
            {
                jaggedArray[i][j] = twoDimensionalArray[i, j];
            }
        }
        return jaggedArray;
    }
}

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