Software Development

software development notes, main category for Cs, Java, and other programming experiences.

Dragging and dropping between ListView

Posted on by coder 
   
 


using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;


public class Form1 : System.Windows.Forms.Form {
    private System.Windows.Forms.ListView listView1= new System.Windows.Forms.ListView();
    private System.Windows.Forms.ListView listView2= new System.Windows.Forms.ListView();
    private System.ComponentModel.Container components = null;
    System.Windows.Forms.ListViewItem listViewItem1 = new System.Windows.Forms.ListViewItem("List 2 Item 1");
    System.Windows.Forms.ListViewItem listViewItem2 = new System.Windows.Forms.ListViewItem("List 2 Item 2");
    System.Windows.Forms.ListViewItem listViewItem3 = new System.Windows.Forms.ListViewItem("List 2 Item 3");
    System.Windows.Forms.ListViewItem listViewItem4 = new System.Windows.Forms.ListViewItem("Item 1");
    System.Windows.Forms.ListViewItem listViewItem5 = new System.Windows.Forms.ListViewItem("Item 2");
    System.Windows.Forms.ListViewItem listViewItem6 = new System.Windows.Forms.ListViewItem("Item 3");

    public Form1() {
        this.SuspendLayout();
        this.listView2.AllowDrop = true;
        listViewItem1.UseItemStyleForSubItems = false;
        listViewItem2.UseItemStyleForSubItems = false;
        listViewItem3.UseItemStyleForSubItems = false;
        this.listView2.Items.AddRange(new System.Windows.Forms.ListViewItem[]{
          listViewItem1,listViewItem2,listViewItem3});
        this.listView2.Location = new System.Drawing.Point(320, 24);
        this.listView2.Size = new System.Drawing.Size(200, 216);
        this.listView2.View = System.Windows.Forms.View.List;
        this.listView2.DragDrop += new System.Windows.Forms.DragEventHandler(this.OnDragDrop);
        this.listView2.DragEnter += new System.Windows.Forms.DragEventHandler(this.OnDragEnter);
        this.listView1.AllowDrop = true;
        listViewItem4.UseItemStyleForSubItems = false;
        listViewItem5.UseItemStyleForSubItems = false;
        listViewItem6.UseItemStyleForSubItems = false;
        this.listView1.Items.AddRange(new System.Windows.Forms.ListViewItem[] { listViewItem4, listViewItem5, listViewItem6 });
        this.listView1.Location = new System.Drawing.Point(40, 24);
        this.listView1.Size = new System.Drawing.Size(200, 216);
        this.listView1.View = System.Windows.Forms.View.List;
        this.listView1.ItemDrag += new System.Windows.Forms.ItemDragEventHandler(this.OnItemDrag);
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(576, 273);
        this.Controls.AddRange(new System.Windows.Forms.Control[] { this.listView2, this.listView1 });
        this.ResumeLayout(false);
    }

    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }

    private void OnItemDrag(object sender, System.Windows.Forms.ItemDragEventArgs e) {
        string s = e.Item.ToString();
        DoDragDrop(s, DragDropEffects.Copy | DragDropEffects.Move);
    }
    private void OnDragEnter(object sender,
         System.Windows.Forms.DragEventArgs e) {
        if (e.Data.GetDataPresent(DataFormats.Text))
            e.Effect = DragDropEffects.Copy;
        else
            e.Effect = DragDropEffects.None;
    }

    private void OnDragDrop(object sender, System.Windows.Forms.DragEventArgs e) {
        string typestring = "Type";
        string s = e.Data.GetData(typestring.GetType()).ToString();
        string orig_string = s;
        s = s.Substring(s.IndexOf(":") + 1).Trim();
        s = s.Substring(1, s.Length - 2);

        this.listView2.Items.Add(s);

        IEnumerator enumerator = listView1.Items.GetEnumerator();
        int whichIdx = -1;
        int idx = 0;
        while (enumerator.MoveNext()) {
            string s2 = enumerator.Current.ToString();
            if (s2.Equals(orig_string)) {
                whichIdx = idx;
                break;
            }
            idx++;
        }
        this.listView1.Items.RemoveAt(whichIdx);
    }
}

Windows Explorer-Like Program: extends ListView

Posted on by coder

using System;
using System.Diagnostics; // For Process.Start
using System.Drawing;
using System.IO;
using System.Windows.Forms;

class FileListView : ListView {
string strDirectory;

public FileListView() {
View = View.Details;

ImageList imglst = new ImageList();
imglst.Images.Add(new Bitmap(GetType(), “DOC.BMP”));
imglst.Images.Add(new Bitmap(GetType(), “EXE.BMP”));

SmallImageList = imglst;
LargeImageList = imglst;

Columns.Add(“Name”, 100, HorizontalAlignment.Left);
Columns.Add(“Size”, 100, HorizontalAlignment.Right);
Columns.Add(“Modified”, 100, HorizontalAlignment.Left);
Columns.Add(“Attribute”, 100, HorizontalAlignment.Left);
}
public void ShowFiles(string strDirectory) {
this.strDirectory = strDirectory;

Items.Clear();
DirectoryInfo dirinfo = new DirectoryInfo(strDirectory);
FileInfo[] afileinfo;

try {
afileinfo = dirinfo.GetFiles();
} catch {
return;
}

foreach (FileInfo fi in afileinfo) {
ListViewItem lvi = new ListViewItem(fi.Name);

if (Path.GetExtension(fi.Name).ToUpper() == “.EXE”)
lvi.ImageIndex = 1;
else
lvi.ImageIndex = 0;

lvi.SubItems.Add(fi.Length.ToString(“N0”));
lvi.SubItems.Add(fi.LastWriteTime.ToString());

string strAttr = “”;

if ((fi.Attributes & FileAttributes.Archive) != 0)
strAttr += “A”;

if ((fi.Attributes & FileAttributes.Hidden) != 0)
strAttr += “H”;

if ((fi.Attributes & FileAttributes.ReadOnly) != 0)
strAttr += “R”;

if ((fi.Attributes & FileAttributes.System) != 0)
strAttr += “S”;

lvi.SubItems.Add(strAttr);

Items.Add(lvi);
}
}
protected override void OnItemActivate(EventArgs ea) {
base.OnItemActivate(ea);

foreach (ListViewItem lvi in SelectedItems) {
try {
Process.Start(Path.Combine(strDirectory, lvi.Text));
} catch {
continue;
}
}
}
}

class ExplorerLike : Form {
FileListView filelist;
MenuItemView mivChecked;

public static void Main() {
Application.Run(new ExplorerLike());
}
public ExplorerLike() {
BackColor = SystemColors.Window;
ForeColor = SystemColors.WindowText;

filelist = new FileListView();
filelist.Parent = this;
filelist.Dock = DockStyle.Fill;

Splitter split = new Splitter();
split.Parent = this;
split.Dock = DockStyle.Left;
split.BackColor = SystemColors.Control;

Menu = new MainMenu();
Menu.MenuItems.Add(“&View”);

string[] astrView = { “Lar&ge Icons”, “S&mall Icons”,
“&List”, “&Details” };
View[] aview = { View.LargeIcon, View.SmallIcon,
View.List, View.Details };
EventHandler eh = new EventHandler(MenuOnView);

for (int i = 0; i < 4; i++) { MenuItemView miv = new MenuItemView(); miv.Text = astrView[i]; miv.View = aview[i]; miv.RadioCheck = true; miv.Click += eh; if (i == 3) // Default == View.Details { mivChecked = miv; mivChecked.Checked = true; filelist.View = mivChecked.View; } Menu.MenuItems[0].MenuItems.Add(miv); } Menu.MenuItems[0].MenuItems.Add("-"); MenuItem mi = new MenuItem("&Refresh", new EventHandler(MenuOnRefresh), Shortcut.F5); Menu.MenuItems[0].MenuItems.Add(mi); } void DirectoryTreeViewOnAfterSelect(object obj, TreeViewEventArgs tvea) { filelist.ShowFiles(tvea.Node.FullPath); } void MenuOnView(object obj, EventArgs ea) { mivChecked.Checked = false; mivChecked = (MenuItemView)obj; mivChecked.Checked = true; filelist.View = mivChecked.View; } void MenuOnRefresh(object obj, EventArgs ea) { } } class MenuItemView : MenuItem { public View View; } [/csharp]

Fill XML data to ListBox

Posted on by coder 
   
 
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using System.Xml;

class Form1 : Form {
    public Form1() {
        InitializeComponent();
    }

    private void buttonLoopThroughDocument_Click(object sender, EventArgs e) {
        listBoxXmlNodes.Items.Clear();

        XmlDocument document = new XmlDocument();
        document.Load("Books.xml");
        RecurseXmlDocument((XmlNode)document.DocumentElement, 0);
    }

    private void RecurseXmlDocument(XmlNode root, int indent) {
        if (root == null)
            return;

        if (root is XmlElement){
            listBoxXmlNodes.Items.Add(root.Name.PadLeft(root.Name.Length + indent));
            if (root.HasChildNodes)
                RecurseXmlDocument(root.FirstChild, indent + 2);
            if (root.NextSibling != null)
                RecurseXmlDocument(root.NextSibling, indent);
        } else if (root is XmlText) {
            string text = ((XmlText)root).Value;
            listBoxXmlNodes.Items.Add(text.PadLeft(text.Length + indent));
        } else if (root is XmlComment) {
            string text = root.Value;
            listBoxXmlNodes.Items.Add(text.PadLeft(text.Length + indent));
            if (root.HasChildNodes)
                RecurseXmlDocument(root.FirstChild, indent + 2);

            if (root.NextSibling != null)
                RecurseXmlDocument(root.NextSibling, indent);
        }
    }

    private void buttonCreateNode_Click(object sender, EventArgs e) {
        XmlDocument document = new XmlDocument();
        document.Load("Books.xml");

        XmlElement root = document.DocumentElement;

        XmlElement newBook = document.CreateElement("book");
        XmlElement newTitle = document.CreateElement("title");
        XmlElement newAuthor = document.CreateElement("author");
        XmlElement newCode = document.CreateElement("code");
        XmlText title = document.CreateTextNode("C#");
        XmlText author = document.CreateTextNode("AAA");
        XmlText code = document.CreateTextNode("1234567890");
        XmlComment comment = document.CreateComment("comment");

        newBook.AppendChild(comment);
        newBook.AppendChild(newTitle);
        newBook.AppendChild(newAuthor);
        newBook.AppendChild(newCode);
        newTitle.AppendChild(title);
        newAuthor.AppendChild(author);
        newCode.AppendChild(code);
        root.InsertAfter(newBook, root.FirstChild);

        document.Save("Books.xml");
    }

    private void buttonDeleteNode_Click(object sender, EventArgs e) {
        XmlDocument document = new XmlDocument();
        document.Load("Books.xml");

        XmlElement root = document.DocumentElement;

        if (root.HasChildNodes) {
            XmlNode book = root.LastChild;
            root.RemoveChild(book);
            document.Save("Books.xml");
        }
    }

    private void buttonSelect_Click(object sender, EventArgs e) {
        XmlDocument document = new XmlDocument();
        document.Load("Books.xml");

        XmlElement root = document.DocumentElement;

        XmlNodeList nodeList = root.SelectNodes("//book[@pages=&#039;1000&#039;]");
        foreach (XmlNode n in nodeList) {
            MessageBox.Show(n.InnerText);
        }
    }
    private void InitializeComponent() {
        this.buttonLoopThroughDocument = new System.Windows.Forms.Button();
        this.listBoxXmlNodes = new System.Windows.Forms.ListBox();
        this.buttonCreateNode = new System.Windows.Forms.Button();
        this.buttonDeleteNode = new System.Windows.Forms.Button();
        this.buttonSelect = new System.Windows.Forms.Button();
        this.SuspendLayout();
        // 
        // buttonLoopThroughDocument
        // 
        this.buttonLoopThroughDocument.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
        this.buttonLoopThroughDocument.Location = new System.Drawing.Point(444, 13);
        this.buttonLoopThroughDocument.Name = "buttonLoopThroughDocument";
        this.buttonLoopThroughDocument.TabIndex = 0;
        this.buttonLoopThroughDocument.Text = "Loop";
        this.buttonLoopThroughDocument.Click += new System.EventHandler(this.buttonLoopThroughDocument_Click);
        // 
        // listBoxXmlNodes
        // 
        this.listBoxXmlNodes.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                    | System.Windows.Forms.AnchorStyles.Left)
                    | System.Windows.Forms.AnchorStyles.Right)));
        this.listBoxXmlNodes.FormattingEnabled = true;
        this.listBoxXmlNodes.Location = new System.Drawing.Point(13, 13);
        this.listBoxXmlNodes.Name = "listBoxXmlNodes";
        this.listBoxXmlNodes.Size = new System.Drawing.Size(424, 225);
        this.listBoxXmlNodes.TabIndex = 1;
        // 
        // buttonCreateNode
        // 
        this.buttonCreateNode.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
        this.buttonCreateNode.Location = new System.Drawing.Point(444, 43);
        this.buttonCreateNode.Name = "buttonCreateNode";
        this.buttonCreateNode.TabIndex = 2;
        this.buttonCreateNode.Text = "Create Node";
        this.buttonCreateNode.Click += new System.EventHandler(this.buttonCreateNode_Click);
        // 
        // buttonDeleteNode
        // 
        this.buttonDeleteNode.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
        this.buttonDeleteNode.Location = new System.Drawing.Point(444, 73);
        this.buttonDeleteNode.Name = "buttonDeleteNode";
        this.buttonDeleteNode.TabIndex = 3;
        this.buttonDeleteNode.Text = "Delete Node";
        this.buttonDeleteNode.Visible = false;
        this.buttonDeleteNode.Click += new System.EventHandler(this.buttonDeleteNode_Click);
        // 
        // buttonSelect
        // 
        this.buttonSelect.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
        this.buttonSelect.Location = new System.Drawing.Point(444, 103);
        this.buttonSelect.Name = "buttonSelect";
        this.buttonSelect.TabIndex = 4;
        this.buttonSelect.Text = "Select";
        this.buttonSelect.Visible = false;
        this.buttonSelect.Click += new System.EventHandler(this.buttonSelect_Click);
        // 
        // Form1
        // 
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(531, 250);
        this.Controls.Add(this.buttonSelect);
        this.Controls.Add(this.buttonDeleteNode);
        this.Controls.Add(this.buttonCreateNode);
        this.Controls.Add(this.listBoxXmlNodes);
        this.Controls.Add(this.buttonLoopThroughDocument);
        this.Name = "Form1";
        this.Text = "Xml Nodes";
        this.ResumeLayout(false);

    }



    private System.Windows.Forms.Button buttonLoopThroughDocument;
    private System.Windows.Forms.ListBox listBoxXmlNodes;
    private System.Windows.Forms.Button buttonCreateNode;
    private System.Windows.Forms.Button buttonDeleteNode;
    private System.Windows.Forms.Button buttonSelect;
    [STAThread]
    static void Main() {
        Application.EnableVisualStyles();
        Application.Run(new Form1());
    }

}

ListBox Objects

Posted on by coder 


   

/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald

Publisher: Apress
ISBN: 1590590457
*/

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace ListBoxObjects
{
    /// <summary>
    /// Summary description for ListBoxObjects.
    /// </summary>
    public class ListBoxObjects : System.Windows.Forms.Form
    {
        internal System.Windows.Forms.CheckedListBox lstCustomers;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public ListBoxObjects()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null) 
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.lstCustomers = new System.Windows.Forms.CheckedListBox();
            this.SuspendLayout();
            // 
            // lstCustomers
            // 
            this.lstCustomers.Location = new System.Drawing.Point(8, 8);
            this.lstCustomers.Name = "lstCustomers";
            this.lstCustomers.Size = new System.Drawing.Size(264, 196);
            this.lstCustomers.TabIndex = 2;
            // 
            // ListBoxObjects
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
            this.ClientSize = new System.Drawing.Size(280, 218);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                          this.lstCustomers});
            this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
            this.Name = "ListBoxObjects";
            this.Text = "ListBox Objects";
            this.Load += new System.EventHandler(this.ListBoxObjects_Load);
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new ListBoxObjects());
        }

        private void ListBoxObjects_Load(object sender, System.EventArgs e)
        {
            lstCustomers.Items.Add(new Customer("Maurice", "Respighi", DateTime.Now));
            lstCustomers.Items.Add(new Customer("Sam", "Digweed", DateTime.Now));
            lstCustomers.Items.Add(new Customer("Faria", "Khan", DateTime.Now));
        }
    }
}
public class Customer
{
    public string FirstName;
    public string LastName;
    public DateTime BirthDate;
    
    public Customer()
    {}

    public Customer(string firstName, string lastName, DateTime birthDate)
    {
        this.FirstName = firstName;
        this.LastName = lastName;
        this.BirthDate = birthDate;
    }
    
    public override string ToString()
    {
        return FirstName + " " + LastName;
    }
}

ListBox and Metafile Enum

Posted on by coder 



   

/*
GDI+ Programming in C# and VB .NET
by Nick Symmonds

Publisher: Apress
ISBN: 159059035X
*/

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;

namespace MetaEnum_c
{
    public class MetaEnum : System.Windows.Forms.Form
    {
        private System.ComponentModel.Container components = null;
        private System.Windows.Forms.ListBox LB;

        Metafile mf = new  Metafile("mymeta.emf");

        public MetaEnum()
        {
            InitializeComponent();
        }

        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null) 
                {
                    components.Dispose();
                }
            }
            mf.Dispose();
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
      this.LB = new System.Windows.Forms.ListBox();
      this.SuspendLayout();
      // 
      // LB
      // 
      this.LB.Location = new System.Drawing.Point(208, 232);
      this.LB.Name = "LB";
      this.LB.Size = new System.Drawing.Size(168, 121);
      this.LB.TabIndex = 1;
      // 
      // MetaEnum
      // 
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(392, 373);
      this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                  this.LB});
      this.MaximizeBox = false;
      this.MinimizeBox = false;
      this.Name = "MetaEnum";
      this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
      this.Text = "MetaEnum";
      this.Load += new System.EventHandler(this.MetaEnum_Load);
      this.ResumeLayout(false);

      }
        #endregion

        [STAThread]
        static void Main() 
        {
            Application.Run(new MetaEnum());
        }

    private void MetaEnum_Load(object sender, System.EventArgs e)
    {
    }

    protected override void OnPaint(PaintEventArgs e)
    {
      Graphics G = e.Graphics;
      G.EnumerateMetafile( mf, new Point( 50, 50 ), 
                   new Graphics.EnumerateMetafileProc(this.MetafileCallback) );

    }

    // Define callback method.
    private bool MetafileCallback( EmfPlusRecordType recordType, int flags, 
                                                 int dataSize, IntPtr data,
                                                 PlayRecordCallback callbackData)
    {
      LB.Items.Add(recordType);
      if ( dataSize > 0 )
      {
        byte[] D = new byte[dataSize];
        Marshal.Copy(data, D, 0, dataSize);
        mf.PlayRecord(recordType, flags, dataSize, D);
      }
      return true;
    }
    }
}


           
          


MetaEnum-c.zip( 1 k)

ListBox Demo 2

Posted on by coder

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

public class ListBoxDemo : System.Windows.Forms.Form {
private System.ComponentModel.Container container;
private System.Windows.Forms.Button buttonAdd;
private System.Windows.Forms.Button buttonClose;
private System.Windows.Forms.Button buttonModify;
private System.Windows.Forms.Button buttonDelete;
private System.Windows.Forms.Button buttonMoveUp;
private System.Windows.Forms.Button buttonMoveDown;
private System.Windows.Forms.ListBox listbox;
private System.Windows.Forms.TextBox textbox;
private System.Windows.Forms.Label label;
private int nSelectedIndex;
//*********SIZE & LOCATION******************//
// COMPONENT – BUTTON(s) aligned along X-axis.
const int BUTTON_LENGTH = 50;
const int BUTTON_HEIGHT = 20;
const int FIRSTBUTTON_XPOS = 20;
const int FIRSTBUTTON_YPOS =220;
const int XSPACING = 70; // (Note: XSPACING >= BUTTON_LENGTH)
const int YSPACING = 0;
//COMPONENT – MOVE BUTTONS
const int MBUTTON_LENGTH = 20;
const int MBUTTON_HEIGHT = 20;
const int FIRSTMBUTTON_XPOS = 220;
const int FIRSTMBUTTON_YPOS =70;
const int SECONDMBUTTON_XPOS = 220;
const int SECONDMBUTTON_YPOS =100;
// COMPONENT – LISTBOX
const int LISTBOX_LENGTH = 3*BUTTON_LENGTH;
const int LISTBOX_HEIGHT = 6*BUTTON_HEIGHT;
const int LISTBOX_XPOS = 50;
const int LISTBOX_YPOS = 50;
// COMPONENT – LABEL
const int LABEL_LENGTH = 50;
const int LABEL_HEIGHT = 50;
const int LABEL_XPOS = 20; // align it with first button
const int LABEL_YPOS = 173;
// COMPONENT – TEXTBOX
const int TEXTBOX_LENGTH = 120;
const int TEXTBOX_HEIGHT = 50;
const int TEXTBOX_XPOS = 70;
const int TEXTBOX_YPOS = 170;

public ListBoxDemo() : base() {
InitializeComponent();
}

private void InitializeComponent() {
// this
this.container = new System.ComponentModel.Container();
this.Text=”List Box”;
// buttonAdd
this.buttonAdd = new System.Windows.Forms.Button();
buttonAdd.Location = new
System.Drawing.Point(FIRSTBUTTON_XPOS,FIRSTBUTTON_YPOS);
buttonAdd.Text = “&Add”;
buttonAdd.Size = new System.Drawing.Size(BUTTON_LENGTH,BUTTON_HEIGHT);
buttonAdd.Click += new System.EventHandler(this.buttonAdd_Click);
buttonAdd.Enabled = false;
this.Controls.Add(this.buttonAdd);
//buttonModify
this.buttonModify = new System.Windows.Forms.Button();
buttonModify.Location = new
System.Drawing.Point(FIRSTBUTTON_XPOS+XSPACING,FIRSTBUTTON_YPOS+YSPACING);
buttonModify.Text = “&Modify”;
buttonModify.Size = new System.Drawing.Size(BUTTON_LENGTH,BUTTON_HEIGHT);
buttonModify.Click += new System.EventHandler(this.buttonModify_Click);
buttonModify.Enabled = false;
this.Controls.Add(this.buttonModify);
//buttonDelete
this.buttonDelete = new System.Windows.Forms.Button();
buttonDelete.Location = new
System.Drawing.Point(FIRSTBUTTON_XPOS+2*XSPACING,FIRSTBUTTON_YPOS+2*YSPACING);
buttonDelete.Text = “&Delete”;
buttonDelete.Size = new System.Drawing.Size(BUTTON_LENGTH,BUTTON_HEIGHT);
buttonDelete.Enabled = false;
buttonDelete.Click += new System.EventHandler(this.buttonDelete_Click);
this.Controls.Add(this.buttonDelete);
// buttonClose
this.buttonClose = new System.Windows.Forms.Button();
buttonClose.Location = new
System.Drawing.Point(FIRSTBUTTON_XPOS+3*XSPACING,FIRSTBUTTON_YPOS+3*YSPACING);
buttonClose.Text = “&Close”;
buttonClose.Size = new System.Drawing.Size(BUTTON_LENGTH,BUTTON_HEIGHT);
buttonClose.Click += new System.EventHandler(this.buttonClose_Click);
this.Controls.Add(this.buttonClose);
// listbox
this.listbox = new System.Windows.Forms.ListBox();
listbox.Location = new System.Drawing.Point(LISTBOX_XPOS,LISTBOX_YPOS);
listbox.Size = new System.Drawing.Size(LISTBOX_LENGTH,LISTBOX_HEIGHT);
listbox.Click += new

System.EventHandler(this.listbox_SelectedIndexChanged);
listbox.BackColor = (Color)System.Drawing.SystemColors.Desktop;
this.Controls.Add(this.listbox);
// label
this.label = new System.Windows.Forms.Label();
label.Location = new System.Drawing.Point(LABEL_XPOS,LABEL_YPOS);
label.Size = new System.Drawing.Size(LABEL_LENGTH,LABEL_HEIGHT);
label.Text = “Enter:”;
this.Controls.Add(this.label);
// textbox
this.textbox = new System.Windows.Forms.TextBox();
textbox.Location = new System.Drawing.Point(TEXTBOX_XPOS,TEXTBOX_YPOS);
textbox.Click += new System.EventHandler(this.textbox_Click);
textbox.Size = new System.Drawing.Size(TEXTBOX_LENGTH,TEXTBOX_HEIGHT);
this.Controls.Add(this.textbox);
// buttonMoveUp
this.buttonMoveUp = new System.Windows.Forms.Button();
buttonMoveUp.Location = new
System.Drawing.Point(FIRSTMBUTTON_XPOS,FIRSTMBUTTON_YPOS);
buttonMoveUp.Text = “<"; buttonMoveUp.Size = new System.Drawing.Size(MBUTTON_LENGTH,MBUTTON_HEIGHT); buttonMoveUp.Click += new System.EventHandler(this.buttonMoveUp_Click); buttonMoveUp.Enabled = false; this.Controls.Add(this.buttonMoveUp); // buttonMoveDown this.buttonMoveDown = new System.Windows.Forms.Button(); buttonMoveDown.Location = new System.Drawing.Point(SECONDMBUTTON_XPOS,SECONDMBUTTON_YPOS); buttonMoveDown.Text = ">“;
buttonMoveDown.Size = new

System.Drawing.Size(MBUTTON_LENGTH,MBUTTON_HEIGHT);
buttonMoveDown.Click += new
System.EventHandler(this.buttonMoveDown_Click);
buttonMoveDown.Enabled = false;
this.Controls.Add(this.buttonMoveDown);
}
protected void textbox_Click(Object sender, System.EventArgs e) {
this.buttonAdd.Enabled = true;
if (this.listbox.Items.Count>0)
EnableAllListBoxButtons();
}
protected void listbox_SelectedIndexChanged(object sender, System.EventArgs e) {
nSelectedIndex = this.listbox.SelectedIndex;
string szSelected = (string)this.listbox.SelectedItem;
this.textbox.Text = szSelected;
}
protected void buttonAdd_Click(Object sender, System.EventArgs e) {
if (this.textbox.Text !=””) {
this.listbox.Items.Add(this.textbox.Text);
this.textbox.Text = “”;
EnableAllListBoxButtons();
}
}
protected void buttonModify_Click(Object sender, System.EventArgs e) {
this.listbox.Items[nSelectedIndex] = this.textbox.Text;
}
protected void buttonDelete_Click(Object sender, System.EventArgs e) {
nSelectedIndex = this.listbox.SelectedIndex;
this.listbox.Items.Remove(nSelectedIndex);
System.Console.WriteLine(“Remove fn does not work…”);

}
protected void buttonClose_Click(Object sender, System.EventArgs e) {
this.Close();
}
protected void buttonMoveUp_Click(Object sender, System.EventArgs e) {
if (this.listbox.SelectedIndex >0)
this.listbox.SelectedIndex–;
}
protected void buttonMoveDown_Click(Object sender, System.EventArgs e) {
if (this.listbox.SelectedIndex < this.listbox.Items.Count-1) this.listbox.SelectedIndex++; } private void EnableAllListBoxButtons() { this.buttonAdd.Enabled = true; this.buttonModify.Enabled = true; this.buttonDelete.Enabled = true; this.buttonMoveUp.Enabled = true; this.buttonMoveDown.Enabled = true; } [STAThread] public static void Main(string[] args) { Application.Run(new ListBoxDemo()); } } // class [/csharp]

CheckedListBox Demo 2

Posted on by coder

using System;
using System.Windows.Forms;
using System.Drawing;
using System.ComponentModel;

public class CheckedListBoxDemo:Form{
CheckedListBox FavLangs;
GroupBox grpControls;
Button AddValue;
Button EditValue;
Button DeleteValue;
Button ShowValues;
TextBox OldValue;
TextBox NewValue;
Label OldCaption;
Label NewCaption;
CheckBox chkAll;

public CheckedListBoxDemo(){
grpControls=new GroupBox();
grpControls.Text=”CheckedListBox Demo”;

AddValue=new Button();
AddValue.Text=”&Add”;
AddValue.Click+=new EventHandler(Add_Click);

EditValue=new Button();
EditValue.Text=”&Edit”;
EditValue.Click+=new EventHandler(Edit_Click);

DeleteValue=new Button();
DeleteValue.Text=”&Delete”;
DeleteValue.Click+=new EventHandler(Delete_Click);

ShowValues=new Button();
ShowValues.Text=”&Show”;
//ShowValues.Click+=new EventHandler(ShowValues_Click);
ShowValues.Click+=new EventHandler(Checked_Changed);

OldValue=new TextBox();
OldValue.ReadOnly=true;
NewValue=new TextBox();

OldCaption=new Label();
OldCaption.Text=”Old Value:”;
NewCaption=new Label();
NewCaption.Text=”New Value:”;

chkAll=new CheckBox();
chkAll.Text=”Check/UnCheck All”;
chkAll.CheckedChanged+= new EventHandler(Checked_Changed);
chkAll.Width=175;

OldCaption.Location=new Point(15,15);
PositionControl(OldCaption,OldValue,true);
PositionControl(OldCaption,NewCaption,false);
PositionControl(OldValue,NewValue,false);
PositionControl(NewCaption,AddValue,false);
PositionControl(AddValue,EditValue,true);
PositionControl(EditValue,DeleteValue,true);
PositionControl(DeleteValue,ShowValues,true);
PositionControl(AddValue,chkAll,false);

grpControls.Controls.AddRange(new Control[]{OldCaption,OldValue,NewCaption,NewValue,AddValue,EditValue,DeleteValue,ShowValues,chkAll});
grpControls.Size=new Size(450,200);

FavLangs=new CheckedListBox();
FavLangs.Location=new Point(10,10);
FavLangs.SelectedIndexChanged+=new EventHandler(SelectedIndex_Changed);

grpControls.Location=new Point(FavLangs.Left+FavLangs.Width+20,FavLangs.Top);
this.Controls.AddRange(new Control[]{FavLangs,grpControls});
}

private void PositionControl(Control source,Control destination,bool CanPlaceHorizontal)
{
if(CanPlaceHorizontal){
destination.Location=new Point(source.Left+source.Width+20,source.Top);
}else{
destination.Location=new Point(source.Left,source.Top+source.Height+20);
}
}

private void Add_Click(object sender,EventArgs e){
((Button)sender).Text = “aaa”;

if(NewValue.Text.Trim()!=””){
FavLangs.Items.Add(NewValue.Text);
}else{
MessageBox.Show(“Enter a Value to Add”);
}
}

private void SelectedIndex_Changed(object sender,EventArgs e){
OldValue.Text=FavLangs.Items[FavLangs.SelectedIndex].ToString();
}

private void Edit_Click(object sender,EventArgs e){
if(FavLangs.SelectedIndex==-1){
MessageBox.Show(“Select a Item to Edit”);
} else{
if(NewValue.Text.Trim()!=””){
FavLangs.Items[FavLangs.SelectedIndex]=NewValue.Text;
}
else
{
MessageBox.Show(“Enter a Value to Edit”);
}
}
}

private void Delete_Click(object sender,EventArgs e)
{
if(FavLangs.SelectedIndex!=-1)
{
FavLangs.Items.RemoveAt(FavLangs.SelectedIndex);
}
else
{
MessageBox.Show(“Select a Item to Delete”);
}
}

private void ShowValues_Click(object sender,EventArgs e){
string SelectedValues=”The following value(s) are Selected:
” + new String('-',48) + ”
“;
for(int i=0;i