需要帮助来编辑CSV文件中的字段吗？

问题描述

我能够编辑每个字段，但是这仅适用于CSV文件的第一行。如果我尝试输入第二行或第三行等上的患者ID，它将不会编辑任何数据。有人知道为什么吗？

我将这些行存储在一个字符串中，然后将它们分成另一个字符串中的不同字段，使用了for循环，我认为该循环将遍历每行直到找到ID。

{

        bool edited = false;
        string ID,change;         
        int choice;         

        Console.WriteLine("Please enter the ID of the customer you would like to Update: ");
        ID = (Console.ReadLine());
        Console.WriteLine("\n");
        Console.WriteLine("Which field would you like to update? ");
        Console.WriteLine("1: Patient ID: ");
        Console.WriteLine("2: Patient Name: ");
        Console.WriteLine("3: Patient age: ");
        Console.WriteLine("4: Patient gender: ");
        Console.WriteLine("5: Patient address: ");
        Console.WriteLine("6: Patient Phone Number: ");
        choice = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("New data: ");
        change = (Console.ReadLine());

        string[] lines = System.IO.File.ReadAllLines("patinfo.csv");
        StreamWriter Write = new System.IO.StreamWriter("temp.csv");
        for (int i = 0; i < lines.Length; i++) // will read each line in the file.         
        {
            string[] fields = lines[i].Split(','); // this here is splitting up each field,so ID,Name,Age will have their own index value

            if (fields[i] == ID) // this is where you will make the change,we need to determine the field here
            {               
                for (int k = 0; k <= fields.Length; k++)
                {
                    if(k == choice)
                    {
                        fields[k-1] = change;
                        Write.WriteLine(fields[0] + "," + fields[1] + "," + fields[2] + "," + fields[3] + "," + fields[4] + "," + fields[5]); // change is made
                    }
                }           
            }
            else
            {
                if (!edited)
                {
                    Write.WriteLine(fields[0] + "," + fields[2]+ "," + fields[5]); // if not edited then it will print the line to the temp file                   
                }
            }                                 
        }
        Write.Close();
        File.Delete("patinfo.csv");
        System.IO.File.Move("temp.csv","patinfo.csv");                                 
        Console.ReadLine();

解决方法

if (fields[0] == ID) // replaced i with 0
{
    for (int k = 1; k <= fields.Length; k++) // replaced 0 with 1

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