| GrapeCity.Xaml.SpreadSheet.UI Namespace > SpreadView Class : ColumnViewportWidthChanging Event | 
'Declaration Public Event ColumnViewportWidthChanging As EventHandler(Of ColumnViewportWidthChangingEventArgs)
'Usage Dim instance As SpreadView Dim handler As EventHandler(Of ColumnViewportWidthChangingEventArgs) AddHandler instance.ColumnViewportWidthChanging, handler
public event EventHandler<ColumnViewportWidthChangingEventArgs> ColumnViewportWidthChanging
The event handler receives an argument of type ColumnViewportWidthChangingEventArgs containing data related to this event. The following ColumnViewportWidthChangingEventArgs properties provide information specific to this event.
| Property | Description | 
|---|---|
| Cancel | (Inherited from System.ComponentModel.CancelEventArgs) | 
| DeltaViewportWidth | Gets the changed value for the viewport column width. | 
| ViewportIndex | Gets the index of the viewport column whose width is changing. | 
Target Platforms: Windows Server 2012, Windows RT