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TrackBar.OnScroll Method

Raises the Scroll event.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

protected virtual void OnScroll(
	EventArgs e
)

Parameters

e
Type: System.EventArgs

An EventArgs that contains the event data.

You can use the OnScroll event to update other controls as the position of the scroll box changes.

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.

The OnScroll method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors

When overriding OnScroll in a derived class, be sure to call the base class’s OnScroll method so that registered delegates receive the event.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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