TopChange Event

Visual Basic
C#

'Declaration
 
Public Event TopChange As TopChangeEventHandler

'Usage
 
Dim instance As FpSpread
Dim handler As TopChangeEventHandler
 
AddHandler instance.TopChange, handler

public event TopChangeEventHandler TopChange

The event handler receives an argument of type TopChangeEventArgs containing data related to this event. The following TopChangeEventArgs properties provide information specific to this event.

Property	Description
NewTop	Gets the index of the new top row.
OldTop	Gets the index of the previous top row.
RowViewportIndex	Gets the index of the viewport row in which the change occurred.

This event is raised by the OnTopChange method when a different row becomes the new top row.

For more details on the individual event arguments, refer to TopChangeEventArgs members.

This example raises the TopChange event.

C#

private void fpSpread1_TopChange(object sender, FarPoint.Win.Spread.TopChangeEventArgs e)
{
      Label1.Text = "The new top is " + e.NewTop.ToString;
}

Visual Basic

Private Sub FpSpread1_TopChange(ByVal sender As Object, ByVal e As FarPoint.Win.Spread.TopChangeEventArgs) Handles FpSpread1.TopChange
     Label1.Text = "The new top is " & e.NewTop.ToString
End Sub

Target Platforms: Windows 2000 Professional (SP4), Windows 2000 Server, Windows 2003 Server (SP1), Windows Server 2012 R2, Windows 2008, Windows XP (SP2), Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10

Reference

FpSpread Class
FpSpread Members
TopChangeEventArgs Class

User-Task Documentation

Customizing the Scroll Bars