ScrollEventArgs Class
Assembly: System.Windows.Forms (in system.windows.forms.dll)
The Scroll event occurs when the user changes the value of the scroll bar. This event can result from a variety of actions, such as clicking a scroll bar arrow, pressing the UP ARROW or DOWN ARROW, or dragging the scroll box. The ScrollEventArgs specifies the type of scroll event that occurred and the new value of the scroll bar. Use the ScrollOrientation property to determine the scroll bar orientation for the Scroll event.
The Scroll event occurs for the DataGridView, ScrollableControl, ScrollBar, and DataGrid controls.
Private Sub AddMyScrollEventHandlers() ' Create and initialize a VScrollBar. Dim vScrollBar1 As New VScrollBar() ' Add event handlers for the OnScroll and OnValueChanged events. AddHandler vScrollBar1.Scroll, AddressOf Me.vScrollBar1_Scroll AddHandler vScrollBar1.ValueChanged, AddressOf Me.vScrollBar1_ValueChanged End Sub ' Create the ValueChanged event handler. Private Sub vScrollBar1_ValueChanged(sender As Object, e As EventArgs) ' Display the new value in the label. label1.Text = "vScrollBar Value:(OnValueChanged Event) " & _ vScrollBar1.Value.ToString() End Sub ' Create the Scroll event handler. Private Sub vScrollBar1_Scroll(sender As Object, e As ScrollEventArgs) ' Display the new value in the label. label1.Text = "VScrollBar Value:(OnScroll Event) " & _ e.NewValue.ToString() End Sub Private Sub button1_Click(sender As Object, e As EventArgs) ' Add 40 to the Value property if it will not exceed the Maximum value. If vScrollBar1.Value + 40 < vScrollBar1.Maximum Then vScrollBar1.Value = vScrollBar1.Value + 40 End If End Sub
private void AddMyScrollEventHandlers()
{
// Create and initialize a VScrollBar.
VScrollBar vScrollBar1 = new VScrollBar();
// Add event handlers for the OnScroll and OnValueChanged events.
vScrollBar1.add_Scroll(
new ScrollEventHandler(this.vScrollBar1_Scroll));
vScrollBar1.add_ValueChanged(
new EventHandler(this.vScrollBar1_ValueChanged));
} //AddMyScrollEventHandlers
// Create the ValueChanged event handler.
private void vScrollBar1_ValueChanged(Object sender, EventArgs e)
{
// Display the new value in the label.
label1.set_Text("vScrollBar Value:(OnValueChanged Event) "
+ vScrollBar1.get_Value());
} //vScrollBar1_ValueChanged
// Create the Scroll event handler.
private void vScrollBar1_Scroll(Object sender, ScrollEventArgs e)
{
// Display the new value in the label.
label1.set_Text(
"VScrollBar Value:(OnScroll Event) " + e.get_NewValue());
} //vScrollBar1_Scroll
private void button1_Click(Object sender, EventArgs e)
{
// Add 40 to the Value property if it will not exceed the Maximum
// value.
if (vScrollBar1.get_Value() + 40 < vScrollBar1.get_Maximum()) {
vScrollBar1.set_Value(vScrollBar1.get_Value() + 40);
}
} //button1_Click
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.