C# search list for a certain name and print matches

Question

Uploaded my code so far really stuck on a step to search the list for a particular name / city and return results the only code im having trouble with is if (x.Find(Sydney)) { } Just not sure how i call the method or if i have to make my own search?

Iftikar Hussain · Answer

you can do like this class Program { static void Main(string[] args) { CreditCard a = new CreditCard(1 Lucas Sydney 350 220); CreditCard b = new CreditCard(2 Chris Brisbane 25 201); CreditCard c = new CreditCard(3 Paul Wollongong 320 120); List cards = new List (); cards.Add(a); cards.Add(b); cards.Add(c); Console.WriteLine(-----------------------Stage 1-3 Print List------------------------); foreach (CreditCard x in cards) { x.PrintRecord(); } Console.WriteLine(
--------------------------Stage 5 Find Card-----------------------------
); foreach (CreditCard x in cards) { if (x.City==Sydney) { //print to console .. } } } } Regards Iftikar

Iftikar Hussain · Answer

Hi Not clear about your query properly. Can you explain bit more and also share the code? Regards Iftikar

Iftikar Hussain · Answer

you can do like this Console.WriteLine(
-------------------Stage 5 Find Cards in Sydney----------------------
); foreach (CreditCard x in cards) { bool isFound=x.FindCard(); if( isFound) { break; } } public bool FindCard() { bool temp=false; if (City == Sydney) { PrintRecord(); temp=true; } return temp; } Regards Iftikar

Lucas Maidment · Answer

Yeah i didnt think a method was a good way but my tutors excercise asks for it in a method > Will the break work aswell if i execute it inside the method?

Iftikar Hussain · Answer

you can put break point  don't use FindCard method Console.WriteLine(
-------------------Stage 5 Find Cards in Sydney----------------------
); foreach (CreditCard x in cards) { if (x.City==Sydney) { //print to console .. break; } } Regards Iftikar

Lucas Maidment · Answer

I know there is a function List.find but not sure how to implement it

Lucas Maidment · Answer

Hey guys Carrying on from this is there any way to alter the answer into a method format that will only return the first answer? using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Lecture_01a { class Program { static void Main(string[] args) { CreditCard a = new CreditCard(1 Lucas Sydney 350 220); CreditCard b = new CreditCard(2 Chris Brisbane 25 201); CreditCard c = new CreditCard(3 Paul Wollongong 320 120); CreditCard d = new CreditCard(4 James Sydney 1500 1120); List cards = new List (); cards.Add(a); cards.Add(b); cards.Add(c); cards.Add(d); List cards2 = new List (); Console.WriteLine(-----------------------Stage 1-3 Print List------------------------); foreach (CreditCard x in cards) { x.PrintRecord(); } Console.WriteLine(
-------------------Stage 4 Total Balance of List---------------------
); double TotalBalance = 0; foreach (CreditCard x in cards) { TotalBalance += x.Balance; } Console.WriteLine(Total Balance: + TotalBalance); Console.WriteLine(
-------------------Stage 5 Find Cards in Sydney----------------------
); foreach (CreditCard x in cards) { x.FindCard(); } Console.WriteLine(
-------------------Stage 6 Shallow / Deep Copies---------------------
); Console.WriteLine(----------------------------Deep Copy------------------------------------); foreach (CreditCard x in cards) { cards2.Add(x.duplicate()); } foreach (CreditCard x in cards2) { x.PrintRecord(); } Console.WriteLine(
------------------------Shallow Copy-------------------------------); foreach (CreditCard x in cards) { cards2.Add(x); } foreach (CreditCard x in cards2) { x.PrintRecord(); } Console.ReadLine(); } } public class CreditCard { private int id; private string name; private string city; private double limit; private double balance; public CreditCard(int id string name string city double limit double balance) { this.id = id; this.name = name; this.city = city; this.limit = limit; this.balance = balance; } public void PrintRecord() { Console.WriteLine(
ID:  + id + 
Name:  + name + 
City:  + city + 
Limit:  + limit + 
Balance:  + balance); } public CreditCard duplicate() { return new CreditCard (this.id this.name this.city this.limit this.balance); } public void FindCard() { if (City == Sydney) { PrintRecord(); } } public int Id { get { return id; } } public string Name { get { return name; } set { name = value; } } public string City { get { return city; } set { city = value; } } public double Limit { get { return limit; } set { limit = value; } } public double Balance { get { return balance; } set { balance = value; } } } } Thats my entire code the only relevant parts are under stage 5 and the findcard method in the creditcard class It runs fine and returns all matches but i want to make it return only the first Also is public void FindCard the right way to call the method? Kind regards Lucas

Lucas Maidment · Answer

Thankyou so much :) Works perfect

Iftikar Hussain · Answer

another way var result = cards.FindAll(a => a.City == Sydney); foreach (var card in result) { //print } Regards Iftikar

Lucas Maidment · Answer

Visual Studio C# Console Application regards Lucas

Iftikar Hussain · Answer

which version of .NET you are using? Regards Iftikar

Lucas Maidment · Answer

yeah sure i tried to upload but seems i screwed it up lol class Program { static void Main(string[] args) { CreditCard a = new CreditCard(1 Lucas Sydney 350 220); CreditCard b = new CreditCard(2 Chris Brisbane 25 201); CreditCard c = new CreditCard(3 Paul Wollongong 320 120); List cards = new List (); cards.Add(a); cards.Add(b); cards.Add(c); Console.WriteLine(-----------------------Stage 1-3 Print List------------------------); foreach (CreditCard x in cards) { x.PrintRecord(); } Console.WriteLine(
--------------------------Stage 5 Find Card-----------------------------
); foreach (CreditCard x in cards) { if (x.Find(Sydney)) { //print to console .. } } Basically I want to search the list above to find all records with the city of Sydney If i remember right im supposed to declare a new variable but im completely blank at the moment ><