小编Def*_*efi的帖子

我正在尝试打印各种foreach循环的ArrayList的内容,但我唯一得到的是String + System.Collections.ArrayList.

例如,以下代码:

ArrayList nodeList = new ArrayList();
foreach (EA.Element element in elementsCol)
{
    if ((element.Type == "Class") || (element.Type == "Component") || (element.Type == "Package"))
    {
         nodeList.Add(element);
    }
    Console.WriteLine("The nodes of MDG are:" + nodeList); //stampato a schermo la lista dei nodi nel MDG finale

我得到的输出是:

The nodes of MDG are:System.Collections.ArrayList

请有人告诉我为什么？

我的目标是使三重for循环乘以矩阵X矩阵,我得到输入矩阵,我必须得到矩阵^ 2.

我收到错误"IndexOutOfRangeException" - 当我调试以下代码时,索引超出了数组的范围:

 for (int i = 1; i < nodeList.Count+1; i++)
            {
                for (int j = 1; j < nodeList.Count+1; j++)
                {
                    result[i, j] = "0";

                    for (int k = 1; k < nodeList.Count+1; i++)
                    {

                        if ((matrix[i, k] != null) && (matrix[k, j] != null))
                        {
                            n1 = Convert.ToInt32(matrix[i, k]);
                            n2 = Convert.ToInt32(matrix[k, j]);
                            n3 = Convert.ToInt32(result[i, j]);

                            total = n3 + n1 * n2;
                            _total = total.ToString();

                            result[i, j] = _total;

                        }
                    }
                }
            } …