Control.Resize Event
Definition
Important
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Occurs when the control is resized.
public:
event EventHandler ^ Resize;public event EventHandler Resize;public event EventHandler? Resize;member this.Resize : EventHandler Public Custom Event Resize As EventHandler Event Type
Examples
The following code example handles the Resize event of a Form. When the form is resized, the event handler ensures that the form stays square (its Height and Width remain equal). To run this example, make sure and associate this event-handling method with the form's Resize event.
private:
void Form1_Resize( Object^ sender, System::EventArgs^ /*e*/ )
{
Control^ control = dynamic_cast<Control^>(sender);
// Ensure the Form remains square (Height = Width).
if ( control->Size.Height != control->Size.Width )
{
control->Size = System::Drawing::Size( control->Size.Width, control->Size.Width );
}
}
private void Form1_Resize(object sender, System.EventArgs e)
{
Control control = (Control)sender;
// Ensure the Form remains square (Height = Width).
if(control.Size.Height != control.Size.Width)
{
control.Size = new Size(control.Size.Width, control.Size.Width);
}
}
Private Sub Form1_Resize(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Resize
Dim myControl As Control
myControl = sender
' Ensure the Form remains square (Height = Width).
If myControl.Size.Height <> myControl.Size.Width Then
myControl.Size = New Size(myControl.Size.Width, myControl.Size.Width)
End If
End Sub
Remarks
To determine the Size of the resized control, you can cast the sender parameter of the registered ControlEventHandler method to a Control and get its Size property (or Height and Width properties individually).
To handle custom layouts, use the Layout event instead of the Resize event. The Layout event is raised in response to a Resize event, but also in response to other changes that affect the layout of the control.
For more information about handling events, see Handling and Raising Events.
