多维数组的indexoutofrangeexception [英] indexoutofrangeexception with multidimensional arrays

问题描述

我开始在学校使用C#，遇到了问题...
我正在尝试使用以下代码创建带有按钮的数组:

Hi, i started working with C# in school and am having an issue...
i''m trying to make an array with buttons with folowing code:

public partial class Form1 : Form
    {
        
        private Button[,] _tabs;
        private string[,] _tabsnaam = new string[,]
            {
                {"E4","F4","Fs4","G4","Gs4","A4","Bb4","B4","C5","Cs5","D5","Ds5","E5"},
                {"B3","C4","Cs4","D4","Ds4","E4","F4","Fs4","G4","Gs4","A4","Bb4","B4"},
                {"G3","Gs3","A3","Bb3","B3","C4","Cs4","D4","Ds4","E4","F4","Fs4","G4"},
                {"D3","Ds3","E3","F3","Fs3","G3","Gs3","A3","Bb3","B3","C4","Cs4","D4"},
                {"A2","Bb2","B2","C3","Cs3","D3","Ds3","E3","F3","Fs3","G3","Gs3","A3"},
                {"E2","F2","Fs2","G2","Gs2","A2","Bb2","B2","C3","Cs3","D3","Ds3","E3"}
            };

        public Form1()
        {
            InitializeComponent();
            maaktabs();
        }

indexoutofrangeexception

indexoutofrangeexception

public void maaktabs()
        {
            int x, y;
            _tabs = new Button[13,6];
            //_tabsnaam = new string[13, 6];
            for (int i = 0; i < 13; i++)
            {
                for (int j = 0; j < 6; j++)
                {
                    _tabs[i, j] = new Button();

_tabs[i, j].Location = new System.Drawing.Point(x, y);
                  _tabs[i, j].Size = new System.Drawing.Size(5, 5);
                  _tabs[i, j].Text = _tabsnaam[ i, j];
                     
                  Controls.Add(_tabs[i, j]);
              }
           }
        }

当我尝试运行代码时，得到indexoutofrangeexception
致敬

N.D.

when i try to run the code i get indexoutofrangeexception
thx for the attention

N.D.

推荐答案

在此行:

_tabs = new Button[13,6];

您正在创建13行和6列.我想你的意思是相反的.

修订:
这可能会给您错误:

You are creating 13 rows and 6 columns. I think you mean to do the opposite.

Revision:
This is likely giving you the error:

_tabs[i, j].Text = _tabsnaam[ i, j];

_tabs有13行6列，而_tabsnaam有6行13列，因此复制循环将不起作用.

_tabs has 13 rows, 6 columns, while _tabsnaam has 6 rows, 13 columns, so the copying loop will not work.

在代码周围放置try/catch块是一个好主意.使用调试器是另一个好主意(至少可以确定执行的位置).除了这两个建议之外，请尝试使用null s或实际的Button对象初始化_tabs数组.

Putting a try/catch block around the code is a good idea. Using the debugger is another good idea (at least then you can determine WHERE the execption is occurring). Beyond those two suggestions, try initializing the _tabs array either with nulls, or with actual Button objects.

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