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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace Listas
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Add_Click(object sender, EventArgs e)
        {           
            if (textBox1.Text.Length == 0)
            {
                MessageBox.Show("Debe Ingresar un Alumno", "Error");
            }
            else
            {
                int i;
                Boolean actual=true ;
                for (i = 0; i < listBox1.Items.Count;i++ )
                {
                    if(listBox1.Items[i].Equals(textBox1.Text) )
                    {
                        actual = false ;
                        MessageBox.Show("Alummo ya existe");
                        i = listBox1.Items.Count;
                    }
                }
                if (actual == true   )
                {
                    listBox1.Items.Add(textBox1 .Text );
                    textBox1.Text = "";
                }
            }
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            string[] lista1 = {"Haydee","Karen","Karla","Mariela","Rosmery","William","Vanessa","Yovana","Enrrique","Segundo","Gumercido","Wilson","Ronald","Ruso","Geral","Lara","Mily"};
            string[] lista2 = {"Mecatronica","Turismo","HOteleria","Educacion","Computacion","Contador","Arkitectura","Civil","Derecho","Administracion","Ingeniero de Sistemas", "Farmacia Bioquimica", "Mecanico", "Empresario", "Electricista" };
            listBox2.Items.AddRange(lista1);
            listBox4.DataSource = lista2;
            listBox4.ClearSelected();             
        }       
        private void Delete_Click(object sender, EventArgs e)
        {
            if (listBox1.SelectedIndex != -1)
            {
                listBox1.Items.Remove(listBox1.SelectedItem);        
 
            }
 
            else
                MessageBox.Show("Debe seleccionar un Item");
        }
        private void button5_Click(object sender, EventArgs e)
        {
            listBox4.SelectionMode = SelectionMode.None;
            listBox4.SelectionMode = SelectionMode.One;
        }
        private void button6_Click(object sender, EventArgs e)
        {
            listBox4.SelectionMode = SelectionMode.None;
            listBox4.SelectionMode = SelectionMode.MultiSimple;
        }
        private void button7_Click(object sender, EventArgs e)
        {
            listBox4.SelectionMode = SelectionMode.None;
            listBox4.SelectionMode = SelectionMode.MultiExtended;
        }
        private void button8_Click(object sender, EventArgs e)
        {            
            listBox4.SelectionMode = SelectionMode.MultiExtended;
            for (int i = 0; i < listBox4.Items.Count;i++ )
            {
                listBox4.SetSelected(i,true );
            }
        }
        private void button9_Click(object sender, EventArgs e)
        {
            listBox4.ClearSelected();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            if (listBox2.SelectedIndex != -1)
            {
                listBox3.Items.Add(listBox2.SelectedItem);
                listBox2.Items.Remove(listBox2.SelectedItem);
            }
        }
        private void button3_Click(object sender, EventArgs e)
        {
            if (listBox3.SelectedIndex != -1) 
            {
                listBox2.Items.Add(listBox3 .SelectedItem );
                listBox3.Items.Remove(listBox3 .SelectedItem );
            }
        }
        private void button2_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < listBox2.Items.Count;i++ )
                listBox3.Items.Add(listBox2.Items[i] );
            listBox2.Items.Clear();
        }
        private void button4_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < listBox3.Items.Count; i++)
                listBox2.Items.Add(listBox3.Items[i]);
            listBox3.Items.Clear();
        }
 
        private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            MessageBox.Show("*******************nWilliam Valdez Alvanvaldezalva@hotmail.comn976913429n******-.:(^):.-******", "Datos del Autor");
        }
    }
}

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