using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Test
{
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace BindingListOfTExamples
{
public partial class Form1 : Form
{
private TextBox textBox2;
private ListBox listBox1;
private Button button1;
[COLOR="Red"] private Button button2;[/COLOR]
private TextBox textBox1;
Random randomNumber = new Random();
public Form1()
{
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.textBox1 = new System.Windows.Forms.TextBox();
this.textBox2 = new System.Windows.Forms.TextBox();
this.listBox1 = new System.Windows.Forms.ListBox();
this.button1 = new System.Windows.Forms.Button();
[COLOR="red"] this.button2 = new Button();[/COLOR]
this.textBox1.Location = new System.Drawing.Point(169, 26);
this.textBox1.Size = new System.Drawing.Size(100, 20);
this.textBox1.Text = "Bracket";
this.textBox2.Location = new System.Drawing.Point(169, 57);
this.textBox2.ReadOnly = true;
this.textBox2.Size = new System.Drawing.Size(100, 20);
this.textBox2.Text = "4343";
this.listBox1.FormattingEnabled = true;
this.listBox1.Location = new System.Drawing.Point(12, 12);
this.listBox1.Size = new System.Drawing.Size(120, 95);
this.button1.Location = new System.Drawing.Point(180, 83);
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.Text = "Add New Item";
this.button1.Click += new System.EventHandler(this.button1_Click);
[COLOR="red"] this.button2.Location = new System.Drawing.Point(180, 116);
this.button2.Size = new System.Drawing.Size(75, 23);
this.button2.Text = "Delete Item";
this.button2.Click += new EventHandler(this.button2_Click);[/COLOR]
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.button1);
this.Controls.Add(this.listBox1);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.textBox1);
[COLOR="Red"] this.Controls.Add(this.button2);[/COLOR]
this.Text = "Parts Form";
this.Load += new EventHandler(Form1_Load);
}
void Form1_Load(object sender, EventArgs e)
{
InitializeListOfParts();
listBox1.DataSource = listOfParts;
listBox1.DisplayMember = "PartName";
listOfParts.AddingNew += new AddingNewEventHandler(listOfParts_AddingNew);
listOfParts.ListChanged += new ListChangedEventHandler(listOfParts_ListChanged);
}
// Declare a new BindingListOfT with the Part business object.
BindingList<Part> listOfParts;
private void InitializeListOfParts()
{
// Create the new BindingList of Part type.
listOfParts = new BindingList<Part>();
// Allow new parts to be added, but not removed once committed.
listOfParts.AllowNew = true;
[COLOR="red"] listOfParts.AllowRemove = true;[/COLOR]
// Raise ListChanged events when new parts are added.
listOfParts.RaiseListChangedEvents = true;
// Do not allow parts to be edited.
[COLOR="red"] listOfParts.AllowEdit = true;[/COLOR]
// Add a couple of parts to the list.
listOfParts.Add(new Part("Widget", 1234));
listOfParts.Add(new Part("Gadget", 5647));
}
// Create a new part from the text in the two text boxes.
void listOfParts_AddingNew(object sender, AddingNewEventArgs e)
{
e.NewObject = new Part(textBox1.Text, int.Parse(textBox2.Text));
}
// Add the new part unless the part number contains
// spaces. In that case cancel the add.
private void button1_Click(object sender, EventArgs e)
{
Part newPart = listOfParts.AddNew();
if (newPart.PartName.Contains(" "))
{
MessageBox.Show("Part names cannot contain spaces.");
listOfParts.CancelNew(listOfParts.IndexOf(newPart));
}
else
{
textBox2.Text = randomNumber.Next(9999).ToString();
textBox1.Text = "Enter part name";
}
}
[COLOR="red"] private void button2_Click(object sender, EventArgs e)
{
if (listBox1.SelectedIndex >= 0)
{
listOfParts.RemoveAt(listBox1.SelectedIndex);
}
}[/COLOR]
void listOfParts_ListChanged(object sender, ListChangedEventArgs e)
{
MessageBox.Show(e.ListChangedType.ToString());
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
// A simple business object for example purposes.
public class Part
{
private string name;
private int number;
public Part() { }
public Part(string nameForPart, int numberForPart)
{
PartName = nameForPart;
PartNumber = numberForPart;
}
public string PartName
{
get { return name; }
set { name = value; }
}
public int PartNumber
{
get { return number; }
set { number = value; }
}
}
}
}
