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View this topic on docs.devexpress.com (Learn more)

VGridControlBase.InvalidRecordException Event

Fires when a record fails validation or when it cannot be saved to the data source.

Namespace:DevExpress.XtraVerticalGrid
Assembly:DevExpress.XtraVerticalGrid.v19.2.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type DevExpress.XtraVerticalGrid.Events.InvalidRecordExceptionEventArgs containing data related to this event.

Expanded Remarks

If a record was modified and is about to lose focus, the vertical grid raises the ValidateRecord event. You can handle this event to check the record's data for validity. If the record fails validation or cannot be saved to the data source due to database restrictions, the InvalidRecordException is raised.

Handle the InvalidRecordException event to provide an appropriate response to invalid data being entered. The event parameter's properties allow you to identify the record whose data failed validation, the exception that raised the event and to specify the error description. The actual response is specified by the ExceptionEventArgs.ExceptionMode parameter. You can display an error message box, discard the changes made, raise an exception or take no action.

For more information, see Validation.

Expanded Example

Assume that the vertical grid contains two rows: "OrderDate" and "RequiredDate". The value in the first row must be less than the value in the second one. So we need to validate their values in a record when it is about to be saved to the data source. For this purpose, the ValidateRecord event is handled.

If the record fails validation, we set errors for the rows with corresponding descriptions using the SetRowError method. The descriptions will be displayed when the mouse cursor hovers over the error icons.

The InvalidRecordException event is handled in order to suppress displaying the default error message box.

The following image shows a vertical grid after a record fails validation.

Expanded See Also

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