'Declaration Public Event BeforeHeaderCheckStateChanged As BeforeHeaderCheckStateChangedEventHandler
public event BeforeHeaderCheckStateChangedEventHandler BeforeHeaderCheckStateChanged
The event handler receives an argument of type BeforeHeaderCheckStateChangedEventArgs containing data related to this event. The following BeforeHeaderCheckStateChangedEventArgs properties provide information specific to this event.
| Property | Description |
|---|---|
| Cancel (Inherited from System.ComponentModel.CancelEventArgs) | |
| Column | Gets the UltraGridColumn containing the header checkbox whose state is being changed |
| CurrentCheckState | Gets the current CheckState value for the header's checkbox |
| IsCancelable | Indicates if the change of the CheckState can be cancelled |
| NewCheckState | Gets or sets the new CheckState value for the header's checkbox |
| Rows | Gets the RowsCollection which is affected the header checkbox's state change |
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2