Spread WPF Documentation
TopRowChanged Event (GcSpreadSheet)
Example 


GrapeCity.Windows.SpreadSheet.UI Namespace > GcSpreadSheet Class : TopRowChanged Event
Occurs when the top row changes.
Syntax
'Declaration
 
Public Event TopRowChanged As System.EventHandler(Of ViewportEventArgs)
'Usage
 
Dim instance As GcSpreadSheet
Dim handler As System.EventHandler(Of ViewportEventArgs)
 
AddHandler instance.TopRowChanged, handler
public event System.EventHandler<ViewportEventArgs> TopRowChanged
Event Data

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

PropertyDescription
Gets the index of the new viewport index.  
Gets the index of the previous viewport index.  
Gets the index of the viewport in which the change occurred.  
Example
This example uses the TopRowChanged event.
private void gcSpreadSheet1_LeftColumnChanged(object sender, GrapeCity.Windows.SpreadSheet.UI.ViewportEventArgs e)
        {
         listBox1.Items.Add(e.OldIndex.ToString());
         listBox1.Items.Add(e.NewIndex.ToString());
        }

private void gcSpreadSheet1_TopRowChanged(object sender, GrapeCity.Windows.SpreadSheet.UI.ViewportEventArgs e)
        {
         listBox1.Items.Add(e.OldIndex.ToString());
         listBox1.Items.Add(e.NewIndex.ToString());
        }
Private Sub GcSpreadSheet1_LeftColumnChanged(sender As System.Object, e As GrapeCity.Windows.SpreadSheet.UI.ViewportEventArgs) Handles GcSpreadSheet1.LeftColumnChanged
        ListBox1.Items.Add(e.OldIndex.ToString())
        ListBox1.Items.Add(e.NewIndex.ToString())
    End Sub

Private Sub GcSpreadSheet1_TopRowChanged(sender As System.Object, e As GrapeCity.Windows.SpreadSheet.UI.ViewportEventArgs) Handles GcSpreadSheet1.TopRowChanged
        ListBox1.Items.Add(e.OldIndex.ToString())
        ListBox1.Items.Add(e.NewIndex.ToString())
    End Sub
See Also