多维数组在创建时使代码崩溃

Question

我正在尝试创建多维数组：

Line[,] lines = new Line[10, 10];

但是执行该代码时出现此错误：

System.IndexOutOfRangeException: 'Index was outside the bounds of the array.'

Line类是自定义类：

class Line
    {
        // Kameran kommer egentligen vara en mägnd vektorlinjer. Om man tex vill flytta kameran 1 steg i x-led lopar man igenom alla vektorer och ökar deras m1-värde med 1.
        // En vektorlinje i parametisk form: ( a2 * t + m1 , b2 * t + m2 , c2 * t + m3 )
        public float a2;
        public float m1;
        public float b2;
        public float m2;
        public float c2;
        public float m3;

        public Line(float a2_, float m1_, float b2_, float m2_, float c2_, float m3_)
        {
            a2 = a2_;
            m1 = m1_;
            b2 = b2_;
            m2 = m2_;
            c2 = c2_;
            m3 = m3_;
        }
    }

当我将此复制到其他解决方案时，它的工作原理非常好。我被这条小线困住了。

它是WPF应用程序的一部分。如果有帮助，请参见以下完整代码：

using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace _3D_Cube_Render
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            Rectangle rect = new Rectangle()
            {
                Width = 1,
                Height = 1,
                Fill = Brushes.Red,
            };

            Face[] faces = new Face[5];

            faces[0] = new Face(1, 0, 0);
            faces[1] = new Face(-1, 0, 0);
            faces[2] = new Face(0, 1, 0);
            faces[3] = new Face(0, -1, 0);
            faces[4] = new Face(0, 0, 1);
            faces[5] = new Face(0, 0, -1);

            Line[,] lines = new Line[10, 10];
            /*
            for(int i = 0; i < 10; i++)
            {
                lines[i] = new Line[10];
                for(int j = 0; j < 10; j++)
                {
                    lines[i][j] = new Line(0, i, 1, -5, j, 0);
                }
            }
            */
            /*
            Line[][] lines = new Line[5][];

            lines[0][0] = new Line(-1, 3.5f, -1, 6.5f, 0, 0);
            lines[1][0] = new Line(-1, 4, -1, 6f, 0, 0);
            lines[2][0] = new Line(-1, 4.5f, -1, 5.5f, 0, 0);
            lines[3][0] = new Line(-1, 5f, -1, 5f, 0, 0);
            lines[4][0] = new Line(-1, 5.5f, -1, 4.5f, 0, 0);
            lines[0][1] = new Line(-1, 3.5f, -1, 6.5f, 0, 1);
            lines[1][1] = new Line(-1, 4, -1, 6f, 0, 1);
            lines[2][1] = new Line(-1, 4.5f, -1, 5.5f, 0, 1);
            lines[3][1] = new Line(-1, 5f, -1, 5f, 0, 1);
            lines[4][1] = new Line(-1, 5.5f, -1, 4.5f, 0, 1);
            */

            // i är x-led, j är y-led ( där canvas är ett kordinatsystem med x- och y-axlar )
            /*
            for(int i = 0; i < 10; i++)
            {
                for(int j = 0; j < 10; j++)
                {
                   for(int k = 0; k < 6; k++)
                   {
                        float t1 = (1 - lines[i][j].m1 * faces[k].a1 - lines[i][j].m2 * faces[k].b1 - lines[i][j].m3 * faces[k].c1) / 
                                   (faces[k].a1 * lines[i][j].a2 + faces[k].b1 * lines[i][j].b2 * faces[k].c1 * lines[i][j].c2);
                        if(lines[i][j].a2 * t1 + lines[i][j].m1 < -1)
                        {
                            Canvas.SetLeft(rect, i);
                            Canvas.SetTop(rect, j);
                            canvas.Children.Add(rect);
                        }
                   }
                }
            }*/
        }
        /*
        private Face[] FaceCreator()
        {
            Face[] faces = new Face[5];

            faces[0] = new Face(1, 0, 0);
            faces[1] = new Face(-1, 0, 0);
            faces[2] = new Face(0, 1, 0);
            faces[3] = new Face(0, -1, 0);
            faces[4] = new Face(0, 0, 1);
            faces[5] = new Face(0, 0, -1);

            return faces;
        }*/
    }
    /*
    class Camera
    {
        // Antal totala linjer motsvarar upplösningen man får. Därför: mer vektorlinjer/pixlar = sämre prestanda
        public Line[][] lines;

        // Går igenom alla vektorlinjer och ökar alla m-värden med korresporerande värde
        public void Move(float x, float y, float z)
        {
            for(int i = 0; i < this.lines.Length; i++)
            {
                for (int j = 0; j < this.lines[i].Length; j++)
                {
                    this.lines[i][j].m1 += x;
                    this.lines[i][j].m2 += y;
                    this.lines[i][j].m3 += z;
                }
            }
        }
    }
    */

    class Face
    {
        // Ett plan i parametisk form: ( a * x + b * y + c * z = 1 )
        public float a1;
        public float b1;
        public float c1;

        public Face(float a1_, float b1_, float c1_)
        {
            a1 = a1_;
            b1 = b1_;
            c1 = c1_;
        }
    }

    class Line
    {
        // Kameran kommer egentligen vara en mägnd vektorlinjer. Om man tex vill flytta kameran 1 steg i x-led lopar man igenom alla vektorer och ökar deras m1-värde med 1.
        // En vektorlinje i parametisk form: ( a2 * t + m1 , b2 * t + m2 , c2 * t + m3 )
        public float a2;
        public float m1;
        public float b2;
        public float m2;
        public float c2;
        public float m3;

        public Line(float a2_, float m1_, float b2_, float m2_, float c2_, float m3_)
        {
            a2 = a2_;
            m1 = m1_;
            b2 = b2_;
            m2 = m2_;
            c2 = c2_;
            m3 = m3_;
        }
    }
}

和xaml：

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:_3D_Cube_Render"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Canvas x:Name="canvas" Height="450" Width="800">
            <Button x:Name="startButton" Content="Start" Width="30" Height="20" Click="Button_Click" Canvas.Left="23" Canvas.Top="14" />
            <Rectangle Height="1" Width="1" Fill="Red" Canvas.Left="44" Canvas.Top="11" />
        </Canvas>

    </Grid>
</Window>

Answer 1

更改

Face[] faces = new Face[5];

收件人

Face[] faces = new Face[6];

---

更新：

正如乔恩·斯基特（Jon Skeet）在评论中提到的，原因是当您要访问此行中的face [5]：

faces[5] = new Face(0, 0, -1);

并且此面孔在面孔中不存在（定义上，面孔有5个面孔：0、1、2、3、4）此行中引发了异常