C#

abbd wrote:

I would get all line where the lastname and lastname was the same, i will get two elements for exemple in arraylist :

CelestialCoder wrote:

I think I need a book to learn about the basics of windows programming.

IEnumerable<int> GetNumbers()
{
    for (int i = 0; i < 100; i++)
        yield return i;
}

foreach (int number in GetNumbers())
    Console.WriteLine(number);

method = type.GetMethod("Method1", p);
object myObject = Activator.CreateInstance(type);
Object[] ps = new Object[3] { val1, val2, 0 };
method.Invoke(myObject, ps);

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System;
using System.Xml;


namespace Machine_Problem
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private LinkedList<StudentInfo> Stud = new LinkedList<StudentInfo>();

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void AddEntry_Click(object sender, EventArgs e)
        {
            StudentInfo Temp = new StudentInfo();
            Temp.ID = int.Parse(textBox2.Text);
            Temp.LastName = textBox1.Text;
            Temp.FirstName = textBox4.Text;
            Temp.EMail = textBox3.Text;
            Temp.CInfo = long.Parse(textBox5.Text);

            Stud.AddLast(Temp);

            MessageBox.Show(" Data entry succesful! ");


        }

        private void Clear_Click(object sender, EventArgs e)
        {
            textBox1.Clear();
            textBox2.Clear();
            textBox3.Clear();
            textBox4.Clear();
            textBox5.Clear();
        }

        private void button7_Click(object sender, EventArgs e)
        {
            
            XmlDocument xmldoc = new XmlDocument();
            xmldoc.Load(" C:\Users\dbrylle\documents\db.xml ");
            //listBox1.Items.Clear();

            for (int i = 0; i < Stud.Count; i++)
            {
                StudentInfo temp;
                temp = Stud.ElementAt<StudentInfo>(i);
                string data;
                data = temp.ID.ToString() + " -- ";
                data += temp.LastName + ", ";
                data += temp.FirstName + " -- ";
                data += temp.CInfo + " - ";
                data += temp.EMail;
                //listBox1.Items.Add(data);
            }
        }