public interface ICellEditorValidator
This interface should be implemented by classes that wish to act as cell editor validators.
|Modifier and Type||Method and Description|
Returns a string indicating whether the given value is valid;
nullmeans valid, and non-
nullmeans invalid, with the result being the error message to display to the end user.
It is the responsibility of the implementor to fully format the message before returning it.
value- the value to be validated
nullindicating that the value is valid
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