C# Duplicate strings with a little change within line

Question

For example i have strings of array like this. Below is the string of Example[0]

Name\r\n
Gamma\r\n
ID\r\n
3F97\r\n
CAR\r\n
Mitsubishi EVO LAN V\r\n

well i would like to duplicate this value from this string into Example[0]

Name\r\n
Gamma\r\n
ID\r\n
3F97\r\n
CAR\r\n
Mitsubishi EVO LAN V\r\n
Name\r\n
Gamma\r\n
ID\r\n
3F98\r\n
CAR\r\n
Mitsubishi EVO LAN V\r\n

is there anyway to do this? note that the change is below the ID from 3F97 into 3F98

Answer 1

You can split the string by end-of-line, change the fourth line, join it and concatenate it to the first string.

Answer 2

I think your question might be giving the wrong impression, correct me if I'm wrong, but what you have here is a class that defines a 'car'.

Why then don't you just create an actual class to represent a car and implement a ToString() method?

public class Car {

    public string Name {get;set}
    public string ID {get;set;}
    public string CAR {get;set;}

    public Car(string name,string id,string car){
        Name = name;
        ID = id;
        CAR = car;
    }

    public override string ToString(){
        return string.format("Name: {0}, ID: {1}, CAR: {2}",Name,ID,CAR);
    }
}

Then, instead of an array of strings, have an array of cars, which you can duplicate as you please and modify if necessary.

You will also have a central place to modify the format of the output, i.e. the Car class definition (even though in normal circumstances, I would never promote a ToString() method like this for output, other than that directed to a logger)