Sets input focus to the control.
Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)
Visual Basic (Declaration)
Public Function Focus As Boolean
Dim instance As Control
Dim returnValue As Boolean
returnValue = instance.Focus
public function Focus () : boolean
Return Value
true if the input focus request was successful; otherwise, false.
The Focus method returns true if the control successfully received input focus. The control can have the input focus while not displaying any visual cues of having the focus. This behavior is primarily observed by the nonselectable controls listed below, or any controls derived from them.
A control can be selected and receive input focus if all the following are true: the Selectable value of ControlStyles is set to true, it is contained in another control, and all its parent controls are both visible and enabled.
The Windows Forms controls in the following list are not selectable. Controls derived from these controls are also not selectable.
.gif) Note |
|---|
| Focus is a low-level method intended primarily for custom control authors. Instead, application programmers should use the Select method or the ActiveControl property for child controls, or the Activate method for forms. |
The following code example sets focus to the specified Control, if it can receive focus.
Public Sub ControlSetFocus(control As Control)
' Set focus to the control, if it can receive focus.
If control.CanFocus Then
control.Focus()
End If
End Sub
public void ControlSetFocus(Control control)
{
// Set focus to the control, if it can receive focus.
if(control.CanFocus)
{
control.Focus();
}
}
public:
void ControlSetFocus( Control^ control )
{
// Set focus to the control, if it can receive focus.
if ( control->CanFocus )
{
control->Focus();
}
}
public void ControlSetFocus(Control control)
{
// Set focus to the control, if it can receive focus.
if (control.get_CanFocus()) {
control.Focus();
}
} //ControlSetFocus
Windows 98, Windows 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
.NET Framework
Supported in: 2.0, 1.1, 1.0
.NET Compact Framework
Supported in: 2.0, 1.0