通过2维数组C＃迭代 [英] Iterate through 2 dimensional array c#

问题描述

for(int k=0;k <= odds.GetLength(-1);k++)

code的上面一行是应该通过double类型的二维数组进行迭代，但不断抛出下面的异常。指数超出范围的异常。会有人好心地说明原因，并提供解决方案。非常感谢。

The above line of code is supposed to iterate through a two dimensional array of type Double but keeps throwing the following exception. Index Out Of Range Exception. Would someone be kind enough to explain why and provide a solution. Many thanks.

推荐答案

正在传递一个无效的指数<一个href=\"http://msdn.microsoft.com/en-us/library/system.array.getlength.aspx\"><$c$c>GetLength.多维数组的尺寸是 0 为主，这样 1 是无效的，并用负数（或数字比维数较大 - 1）会导致一个 IndexOutOfRangeException

You are passing an invalid index to GetLength. The dimensions of a multidimensional array are 0 based, so -1 is invalid and using a negative number (or a number that is larger than the number of dimensions - 1) would cause an IndexOutOfRangeException.

这将循环过的第一个的尺寸：

for(int k=0;k < odds.GetLength(0);k++)

您需要添加另一个循环都要经过第二维：

You need to add another loop to go through the second dimension:

for(int k=0;k < odds.GetLength(0);k++)
    for(int l=0;l < odds.GetLength(1);l++)
        var val = odds[k,l];

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