How to pass the elements into list template

Question

hi friendsi have a small doubt.I am working with console applications by using xml.First i am taking an xml file with elements idnamesal. 1 abc 1000 ..... My requirement is i am taking one class like class employee { int id; string name; float sal; } class company { list ll=new list (); public void add(...) public void show(...) } main() { add(..)-->for adding the elements into xml file show(...)-->is used to show the xml data } can u help the coding?

Vulpes · Answer

Try the following: using System; using System.Collections.Generic; using System.Xml.Linq; class employee { int id; string name; float sal; public employee(int id string name float sal) { this.id = id; this.name = name; this.sal = sal; } public override string ToString() { return String.Format(id = {0} name = {1} sal = {2} id name sal); } } class company { List ll = new List (); public void add(employee e) { ll.Add(e); } public void show() { foreach(employee e in ll) Console.WriteLine(e); } } class Program { static void Main() { // create a company object company c = new company(); // read the xml file XElement xl = XElement.Load(satish.xml); // create employee objects and add them to the company object foreach(XElement emp in xl.Elements()) { int id = (int)emp.Element(id); string name = (string)emp.Element(name); float sal = (float)emp.Element(sal); employee e = new employee(id name sal); c.add(e); } // display the results c.show(); Console.ReadKey(); } }

Vulpes · Answer

OK I've used this sample xml file: bdnf 1 abc 1000 2 def 2000 acme 1 ghi 1500 2 jkl 3000 3 mno 4500 Here's the code: using System; using System.Collections.Generic; using System.Text; using System.Xml.Serialization; using System.IO; namespace DakeTest { public class Employee { public string ID {get; set;} public string Name {get; set;} public decimal Salary {get; set;} } public class Company: IComparable { public string Name {get; set;} public List Employees = new List (); public Company() { } public Company(string aName) { Name = aName; } public override string ToString() { return string.Format(Company {0}: Employees {1} Name Employees.Count); } public int CompareTo(Company other) { // If other.Name is null this instance is greater. if (other.Name == null) return 1; // Otherwise compare the Names of this and the other instance return this.Name.CompareTo(other.Name); } } class Program { static XmlSerializer xs; static void Main(string[] args) { XmlRootAttribute root = new XmlRootAttribute(); root.ElementName = Companies; root.Namespace = ; root.IsNullable = false; xs = new XmlSerializer(typeof(List ) root); List companies = Load(companies.xml); ShowCompanies(companies); // now sort the Companies by Name and redisplay companies.Sort(); ShowCompanies(companies); Save(companies.xml companies); companies = Load >(companies.xml); ShowCompanies(companies); Save >(companies.xml companies); } private static List Load(string FileName) { List companies; using(Stream s = File.OpenRead(FileName)) { companies = (List )xs.Deserialize(s); } return companies; } private static void Save(string FileName List companies) { using(Stream s = File.OpenWrite(FileName)) { xs.Serialize(s companies); } } private static T Load (string FileName) { T objects; using(Stream s = File.OpenRead(FileName)) { objects = (T)xs.Deserialize(s); } return objects; } private static void Save (string FileName T t) { using(Stream s = File.OpenWrite(FileName)) { xs.Serialize(s t); } } private static void ShowCompanies(List companies) { Console.WriteLine(List of companies:

); foreach (Company company in companies) { Console.WriteLine(company); } Console.WriteLine(Done:

); } } }

satish babu · Answer

hi frnd thanks for reply but i want code like this //Dake Test //Task 1 //Complete this program so that the list of companies can be loaded from a file and also saved to a file //HINT: make use of XML serialization //You may need to create the test xml data file by hand or any other mechanism //Task 2 //Change the interface for the Company class so that the companies can be sorted by number of employees //HINT: Use IComparable //Task 3 - Advanced - if time available //Create a generic Template Function for Loading any complex type from a file and saving any complex type to a file using System; using System.Collections.Generic; using System.Text; namespace DakeTest { //Task 1 - Complete this class members and its attributes for XML serialization class Employee { string ID; string Name; decimal Salary; } //Task 1 - Complete this class members and attributes for XML serialization class Company { string Name; List employees = new List (); public Company(string aName) { Name = aName; } public override string ToString() { return string.Format(Company {0}: Employees {1} Name employees.Count); } } class Program { static void Main(string[] args) { List companies = Load(companies.xml); ShowCompanies(companies); //TASK 2: by changing the interface of the Company class - the following //line of code is all that is needed to sort the list companies.Sort(); ShowCompanies(companies); Save(companies.xml companies); //TASK 3 - the new generic overloaded Load/Save functions are used like this companies = Load >(companies.xml); ShowCompanies(companies); Save >(companies.xml companies); } //TASK 1 - complete this private static List Load(string FileName) { //TODO: complete this return null; } //TASK 1 - complete this private static void Save(string FileName List companies) { //TODO: complete this } //TASK 3 - advanced - complete this private static T Load (string FileName) { //TODO: complete this return default(T); } //TASK 3 - advanced - complete this private static void Save (string FileName T t) { //TODO: complete this } private static void ShowCompanies(List companies) { System.Console.WriteLine(List of companies:

); foreach (Company company in companies) { System.Console.WriteLine(company.ToString()); } System.Console.WriteLine(Done:

); } } }

satish babu · Answer

thanks vulpes for giving nice suggestion