This documentation is archived and is not being maintained.

TextBox.AutoCompleteSource Property

Gets or sets a value specifying the source of complete strings used for automatic completion.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

[TypeConverterAttribute(typeof(TextBoxAutoCompleteSourceConverter))] 
public AutoCompleteSource AutoCompleteSource { get; set; }
/** @property */
public AutoCompleteSource get_AutoCompleteSource ()

/** @property */
public void set_AutoCompleteSource (AutoCompleteSource value)

public function get AutoCompleteSource () : AutoCompleteSource

public function set AutoCompleteSource (value : AutoCompleteSource)

Not applicable.

Property Value

One of the values of AutoCompleteSource. The options are AllSystemSources, AllUrl, FileSystem, HistoryList, RecentlyUsedList, CustomSource, and None. The default is None.

Exception typeCondition

InvalidEnumArgumentException

The specified value is not one of the values of AutoCompleteSource.

Use the AutoCompleteCustomSource, AutoCompleteMode, and AutoCompleteSource properties to create a TextBox that automatically completes input strings by comparing the prefix being entered to the prefixes of all strings in a maintained source. This is useful for TextBox controls in which URLs, addresses, file names, or commands will be frequently entered.

The use of the AutoCompleteCustomSource property is optional, but you must set the AutoCompleteSource property to CustomSource in order to use AutoCompleteCustomSource.

You must use the AutoCompleteMode and AutoCompleteSource properties together.

NoteNote:

AutoCompleteSource does not work on multiline TextBox controls.

NoteNote:

The operating system might limit the number of custom strings that can be displayed at once.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0
Show: