How to: Validate data in PropertyGridControl

The DXPropertyGrid supports several ways to check if the value entered by a user is correct.

First, this functionality can be implemented at the View level by handling the ValidateCell event. This event is raised when a user has modified a cell value and is trying to save changes (either by pressing the Enter key or switching to another property grid cell).
Here is a code snippet demonstrating how to handle this event.

[C#]
voidOnPropertyGridControlValidateCell(objectsender,DevExpress.Xpf.PropertyGrid.ValidateCellEventArgse){if(e.NewValue==null||string.IsNullOrEmpty(e.NewValue.ToString()))e.ValidationException=newSystem.Exception("A cell cannot be empty");}

Another way is to implement validation at the data source level using Data Annotation Attributes (assigning attributes using the DevExpress FluentAPI is also supported) or by implementing the IDataErrorInfo interface.