如何在.txt文件中找到分配给名称的值？ [英] How do I find a value that is assigned to a name in .txt file?

问题描述

例如，我有一个.txt文件，里面有车名，每辆车的数量，制造年份和价格：

For example, i got a .txt file in which there are cars names, amount of each car, year they were made and their price:

5
ORION; 2; 1935; 365.1;
POLARIS; 1; 1988; 87.09;
INDUSTRIERAD; 10; 1995; 58.10;
Bauer; 25; 2008; 285.58;
HERREN; 15; 2012; 1040.42;

我找到周期为1040.42的最大值。所以接下来我需要找到最大值名称（Herren），那辆车的数量和它的年份。

所以问题是我不知道怎么找所有这些。我需要使用for和if，但是havo不知道该怎么做。



我尝试了什么：



互联网上的所有内容。

I find the max value with for cycle that is 1040.42. So next i need to find the max values name(Herren), the amount of of that car that there is and the year it was made.
So the problem is i don't know how to find all of this. I need to use "for" and "if", but havo no idea how to do it.

What I have tried:

Everything that is on the internet.

推荐答案

看看这个 CodeProject 文章： C＃ - 轻量级和快速CSV解析器 [ ^ ]。

Have a look at this CodeProject article: C# - Light and Fast CSV Parser[^].

首先创建一个根据您的数据表示的POCO：

First create a POCO that represents according to your data:

public class Car
{
	public string Name { get;set;}
	public int Amount { get;set;}
	public int Year { get;set;}
	public decimal Price { get;set;}
	
	public override String ToString()
	{
		return String.Format("Name:{0},Amount{1},Year:{2},Price:{3}",Name,Amount,Year,Price);
	}
}

然后读取文件然后创建一个集合然后使用linq获取价格最高的汽车并打印出来：

and then read the file and then create a collection and then use linq to get the car with highest price and print it out:

var lines = File.ReadAllLines("cars.text");

int totalCars = Convert.ToInt32(lines[0]);
		List<Car> cars = new List<Car>();
		for(int i = 1; i < totalCars; i++)
		{
			var line = lines[i];
			var carInfo = line.Split(';');
			
			Car car = new Car();
			car.Name = carInfo[0];
			car.Amount = Convert.ToInt32(carInfo[1]);
			car.Year = Convert.ToInt32(carInfo[2]);
			car.Price = Convert.ToDecimal(carInfo[3]);
			
			cars.Add(car);
		}
		
		var carWithHighestPrice = cars.OrderByDescending(x=>x.Price).First();
		
		Console.WriteLine(carWithHighestPrice);

这篇关于如何在.txt文件中找到分配给名称的值？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！