DataGridView.OnEnter Method
Raises the Enter event.
Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
| Exception | Condition |
|---|---|
| InvalidCastException | The control is configured to enter edit mode when it receives focus, but upon entering focus, the EditType property of the current cell does not indicate a class that derives from Control and implements IDataGridViewEditingControl. |
| Exception | The control is configured to enter edit mode when it receives focus, but initialization of the editing cell value failed and either there is no handler for the DataError event or the handler has set the DataGridViewDataErrorEventArgs.ThrowException property to true. The exception object can typically be cast to type FormatException. |
Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.
The OnEnter method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to InheritorsWhen overriding OnEnter in a derived class, be sure to call the base class's OnEnter method so that registered delegates receive the event.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
