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Data Editing Event Sequence

Grid editing follows a well defined sequence of events:

  • When the grid enters edit mode, the CellBeginEdit event is called. The editor is loaded with the current cell value.

  • On every change of the value in the editor, ValueChanging event is fired just before the value is actually changed. The event can be canceled and the current edit rejected.

  • If the ValueChanging is not canceled the value is changed and the ValueChanged event is fired.

  • On closing the editor, the Validating event is fired before the value can be persisted in the grid. If the Validating event is canceled the value is not persisted.

  • If Validating is not canceled, the value is persisted and the Validated event is fired.

  • The CellEndEdit event is called. 

  • Finally the editor is closed.

Some of these events may be called multiple times. Here is a sample log of events as a string cell was put into edit mode and the string "new" was typed, then the cell was tabbed away from:

CellBeginEdit

ValueChanging

ValueChanged

ValueChanging

ValueChanged

ValueChanging

ValueChanged

ValueChanging

ValueChanged

Validating

Validated

Validated

CellEndEdit

See Also