在C＃中打开csv文件时出错

Question

我在c＃程序中打开和读取csv文件时被困在这里。我刚刚开始研究ILNumerics来显示3D矩阵图，但是Exception也随之而来  ＆＃34;找不到文件＆＃39; C：\ Users \ asd \ Documents \ Visual Studio 2013 \ Projects \ matrixgraph \ martix \ bin \ Debug \ stats.csv＆＃39;。＆＃34; < /强>

请帮帮我！ 以下是代码。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using ILNumerics;
using ILNumerics.Drawing;
using ILNumerics.Drawing.Plotting;



namespace martix
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void ilPanel1_Load(object sender, EventArgs e)
        {

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            string path = @"C:\Users\asd\Documents\Visual Studio 2013\Projects\matrixgraph\martix\bin\Debug\stats.csv";
            StreamReader sr = new StreamReader(File.Open(path, FileMode.Open));
            string dataLines = string.Empty;
            while (sr.Peek() != -1)
                dataLines += sr.ReadLine().Replace(";", ",") + "\n";
            sr.Close();
            dataLines = dataLines.Trim('\n');

            //Convert the data-string into an ILArray
            ILArray<int> AN = ILMath.csvread<int>(dataLines);

            //Create a new scene, which is the base for our graph
            var scene = new ILScene();
            using (ILScope.Enter())
            {
                //Convert all data points to float
                ILArray<float> A = ILMath.tosingle(AN);

                //Add a plot to the scene and configure it
                scene.Add(new ILPlotCube
                {
                    //Render in 3D
                    TwoDMode = false,

                    //Add 3 axes
                    Axes =
                    {

                        XAxis =
                        {
                            Label = { Text = "Price in $" },
                            GridMajor =
                            {
                                DashStyle = DashStyle.Dashed,
                                Color = Color.DarkGray,
                                Width = 1
                            }
                        },
                        YAxis =
                        {
                            Label = { Text = "Rating count" },
                            GridMajor =
                            {
                                DashStyle = DashStyle.Dashed,
                                Color = Color.DarkGray,
                                Width = 1
                            }
                        },
                        ZAxis =
                        {
                            Label = { Text = "Download count" }
                        }
                    },
                    //Add the data points
                    Children = {
                new ILPoints {
                    Positions = A
                },
            },
                    //Set start rotation for 3D rendered graph
                    Rotation = Matrix4.Rotation(new Vector3(1, 1, 1), 0.5f)
                });
            }

            //Add the scene to the ILPanel
            ilPanel1.Scene = scene;
        }
    }
}

Answer 1

它可能是您在路径中拥有的空间。没关系，你正在使用逐字字符串。

您确定该路径是否可访问且不是联网的映射路径？你能暂时移动文件吗？您似乎无法访问该路径。

此外，您应该尝试执行以下操作来查明问题：

    System.IO.FileInfo fi = null;
    try
    {
      fi = new System.IO.FileInfo(path);
    }
    catch (ArgumentException) {... }
    catch (System.IO.PathTooLongException) {... }
    catch (NotSupportedException) {... }
    if (ReferenceEquals(fi, null))
    {
      ...
      // file name is not valid
    }
    else
    {
      ...
      // file name is valid... May check for existence by calling fi.Exists.

    }

编辑： 使用System.IO.Directory.GetFiles列出该文件夹中文件的确切名称，可能是文件名不同（stats.csv.csv），窗口浏览器隐藏了扩展名。

Answer 2

尝试时获得解决方案。我以编程方式创建了csv文件，这次它读取了文件。

只需在路径前添加几行并修改路径。

StringBuilder csv = new StringBuilder();
            csv.AppendLine("112,113,222");
            string csvpath = @"C:\\stats\xyz.csv";
            File.AppendAllText(csvpath,csv.ToString());

            string path = @"C:\stats\xyz.csv";

就是这样。无论如何感谢您的帮助:)）