Here is the C# version. It has a lot of options to it.
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;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
this.Load += new EventHandler(this.Form1_Load);
InitializeComponent();
}
private clsCustomAutoCompleteTextbox ClsCustomAutoCompleteTextbox1 = null;
private List<string> MasterList = new List<string> ();
public void Form1_Load(object sender, System.EventArgs e) {
this.ClsCustomAutoCompleteTextbox1 = new clsCustomAutoCompleteTextbox();
this.ClsCustomAutoCompleteTextbox1.AutoCompleteFormBorder = System.Windows.Forms.FormBorderStyle.None;
this.ClsCustomAutoCompleteTextbox1.AutoCompleteList = null;
this.ClsCustomAutoCompleteTextbox1.Location = new System.Drawing.Point(27, 57);
this.ClsCustomAutoCompleteTextbox1.Name = "clsCustomAutoCompleteTextbox1";
this.ClsCustomAutoCompleteTextbox1.OnEnterSelect = true;
this.ClsCustomAutoCompleteTextbox1.SelectionMethods = clsCustomAutoCompleteTextbox.SelectOptions.OnEnterSingleClick;
this.ClsCustomAutoCompleteTextbox1.SelectTextAfterItemSelect = true;
this.ClsCustomAutoCompleteTextbox1.ShowAutoCompleteOnFocus = false;
this.ClsCustomAutoCompleteTextbox1.Size = new System.Drawing.Size(232, 20);
this.ClsCustomAutoCompleteTextbox1.TabIndex = 0;
this.Controls.Add(this.ClsCustomAutoCompleteTextbox1);
this.ClsCustomAutoCompleteTextbox1.BeforeDisplayingAutoComplete +=
new EventHandler<clsCustomAutoCompleteTextbox.clsAutoCompleteEventArgs>(BeforeDisplayingAutoComplete);
List<string> L;
L = new List<string>();
L.Add("123123 - Bob");
L.Add("534543 - Sally");
L.Add("123123 - George");
L.Add("34213 - Happy");
MasterList = L;
this.ClsCustomAutoCompleteTextbox1.AutoCompleteList = L;
}
private void BeforeDisplayingAutoComplete(object sender, clsCustomAutoCompleteTextbox.clsAutoCompleteEventArgs e) {
string Name = this.ClsCustomAutoCompleteTextbox1.Text.ToLower();
List<string> Display = new List<string> ();
foreach (string Str in MasterList) {
if ((Str.ToLower().IndexOf(Name) > -1)) {
Display.Add(Str);
}
}
e.AutoCompleteList = Display;
e.SelectedIndex = 0;
}
}
public class clsCustomAutoCompleteTextbox : TextBox
{
private bool First = true;
private object sender;
private clsAutoCompleteEventArgs e;
public List<string> test = new List<string> ();
public int Tabs = 0;
private int mSelStart;
private int mSelLength;
private List<string> myAutoCompleteList = new List<string> ();
private ListBox myLbox = new ListBox();
private Form myForm = new Form();
private Form myParentForm;
private bool DontHide = false;
private bool SuspendFocus = false;
private clsAutoCompleteEventArgs Args;
private Timer HideTimer = new Timer();
private Timer FocusTimer = new Timer();
private bool myShowAutoCompleteOnFocus;
private System.Windows.Forms.FormBorderStyle myAutoCompleteFormBorder = FormBorderStyle.None;
private bool myOnEnterSelect;
private int LastItem;
private SelectOptions mySelectionMethods = (SelectOptions.OnDoubleClick | SelectOptions.OnEnterPress);
private bool mySelectTextAfterItemSelect = true;
private List<string> value;
private int Cnt = 0;
public bool SelectTextAfterItemSelect
{
get
{
return mySelectTextAfterItemSelect;
}
set
{
mySelectTextAfterItemSelect = value;
}
}
[System.ComponentModel.Browsable(false)]
public SelectOptions SelectionMethods
{
get
{
return mySelectionMethods;
}
set
{
mySelectionMethods = value;
}
}
public bool OnEnterSelect
{
get
{
return myOnEnterSelect;
}
set
{
myOnEnterSelect = value;
}
}
public System.Windows.Forms.FormBorderStyle AutoCompleteFormBorder
{
get
{
return myAutoCompleteFormBorder;
}
set
{
myAutoCompleteFormBorder = value;
}
}
public bool ShowAutoCompleteOnFocus
{
get
{
return myShowAutoCompleteOnFocus;
}
set
{
myShowAutoCompleteOnFocus = value;
}
}
public ListBox Lbox
{
get
{
return myLbox;
}
}
public List<string> AutoCompleteList { get; set; }
public event EventHandler<clsAutoCompleteEventArgs> BeforeDisplayingAutoComplete;
public event EventHandler<clsItemSelectedEventArgs> ItemSelected;
public enum SelectOptions
{
None = 0,
OnEnterPress = 1,
OnSingleClick = 2,
OnDoubleClick = 4,
OnTabPress = 8,
OnRightArrow = 16,
OnEnterSingleClick = 3,
OnEnterSingleDoubleClicks = 7,
OnEnterDoubleClick = 5,
OnEnterTab = 9,
}
public class clsAutoCompleteEventArgs : EventArgs
{
private List<string> myAutoCompleteList;
private bool myCancel;
private int mySelectedIndex;
private List<string> value;
public int SelectedIndex
{
get
{
return mySelectedIndex;
}
set
{
mySelectedIndex = value;
}
}
public bool Cancel
{
get
{
return myCancel;
}
set
{
myCancel = value;
}
}
public List<string> AutoCompleteList { get; set; }
}
public override string SelectedText
{
get
{
return base.SelectedText;
}
set
{
base.SelectedText = value;
}
}
public override int SelectionLength
{
get
{
return base.SelectionLength;
}
set
{
base.SelectionLength = value;
}
}
public clsCustomAutoCompleteTextbox()
{
HideTimer.Tick += new EventHandler(HideTimer_Tick);
FocusTimer.Tick += new EventHandler(FocusTimer_Tick);
myLbox.Click += new EventHandler(myLbox_Click);
myLbox.DoubleClick += new EventHandler(myLbox_DoubleClick);
myLbox.GotFocus += new EventHandler(myLbox_GotFocus);
myLbox.KeyDown += new KeyEventHandler(myLbox_KeyDown);
myLbox.KeyUp += new KeyEventHandler(myLbox_KeyUp);
myLbox.LostFocus += new EventHandler(myLbox_LostFocus);
myLbox.MouseClick += new MouseEventHandler(myLbox_MouseClick);
myLbox.MouseDoubleClick += new MouseEventHandler(myLbox_MouseDoubleClick);
myLbox.MouseDown += new MouseEventHandler(myLbox_MouseDown);
this.GotFocus += new EventHandler(clsCustomAutoCompleteTextbox_GotFocus);
this.KeyDown += new KeyEventHandler(clsCustomAutoCompleteTextbox_KeyDown);
this.Leave += new EventHandler(clsCustomAutoCompleteTextbox_Leave);
this.LostFocus += new EventHandler(clsCustomAutoCompleteTextbox_LostFocus);
this.Move += new EventHandler(clsCustomAutoCompleteTextbox_Move);
this.ParentChanged += new EventHandler(clsCustomAutoCompleteTextbox_ParentChanged);
}
override protected void OnKeyUp(System.Windows.Forms.KeyEventArgs e)
{
base.OnKeyUp(e);
ShowOnChar(new string(((char)(e.KeyValue)),1));
}
private void ShowOnChar(string C)
{
if (IsPrintChar(C))
{
this.ShowAutoComplete();
}
}
private bool IsPrintChar(int C)
{
return IsPrintChar(((char)(C)));
}
private bool IsPrintChar(byte C)
{
return IsPrintChar(((char)(C)));
}
private bool IsPrintChar(char C)
{
return IsPrintChar(C.ToString());
}
private bool IsPrintChar(string C)
{
if (System.Text.RegularExpressions.Regex.IsMatch(C, "[^\t\n\r\f\v]"))
{
return true;
}
else
{
return false;
}
}
private void clsCustomAutoCompleteTextbox_GotFocus(object sender, System.EventArgs e)
{
if ((!this.SuspendFocus
&& (this.myShowAutoCompleteOnFocus
&& (this.myForm.Visible == false))))
{
this.ShowAutoComplete();
}
}
private void clsCustomAutoCompleteTextbox_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
if (!SelectItem(e.KeyCode, false, false))
{
if ((e.KeyCode == Keys.Up))
{
if ((myLbox.SelectedIndex > 0))
{
MoveLBox((myLbox.SelectedIndex - 1));
}
}
else if ((e.KeyCode == Keys.Down))
{
MoveLBox((myLbox.SelectedIndex + 1));
}
}
}
new void SelectAll()
{
}
private void MoveLBox(int Index)
{
try
{
if ((Index
> (myLbox.Items.Count - 1)))
{
Index = (myLbox.Items.Count - 1);
}
myLbox.SelectedIndex = Index;
}
catch
{
}
}
private void clsCustomAutoCompleteTextbox_Leave(object sender, System.EventArgs e)
{
DoHide(sender, e);
}
private void clsCustomAutoCompleteTextbox_LostFocus(object sender, System.EventArgs e)
{
DoHide(sender, e);
}
private void clsCustomAutoCompleteTextbox_Move(object sender, System.EventArgs e)
{
MoveDrop();
}
private void clsCustomAutoCompleteTextbox_ParentChanged(object sender, System.EventArgs e)
{
if (myParentForm != null) myParentForm.Deactivate -= new EventHandler(myParentForm_Deactivate);
myParentForm = GetParentForm(this);
if (myParentForm != null) myParentForm.Deactivate += new EventHandler(myParentForm_Deactivate);
}
private void HideTimer_Tick(object sender, System.EventArgs e)
{
MoveDrop();
DoHide(sender, e);
Cnt++;
if ((Cnt > 300))
{
if (!AppHasFocus(""))
{
DoHideAuto();
}
Cnt = 0;
}
}
private void myLbox_Click(object sender, System.EventArgs e)
{
}
private void myLbox_DoubleClick(object sender, System.EventArgs e)
{
}
private bool SelectItem(Keys Key, bool SingleClick)
{
return SelectItem(Key, SingleClick, false);
}
private bool SelectItem(Keys Key)
{
return SelectItem(Key, false, false);
}
private bool SelectItem(Keys Key, bool SingleClick, bool DoubleClick)
{
// Warning!!! Optional parameters
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