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      How to: Bind a Command to a Button
      How to: Customize Built-in Command Using Service Substitution
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View this topic on docs.devexpress.com (Learn more)

How to: Customize Built-in Command Using Service Substitution

To change the actions performed when the built-in command is executed, use the service substitution technique. Create the IRichEditCommandFactoryService descendant which generates custom commands and use the DevExpress.XtraRichEdit.RichEditControl.ReplaceService``1 method (or the GetService -> RemoveService -> AddService method sequence) to replace default service with a newly created service.

The following code replaces the IRichEditCommandFactoryService service with its customized descendant.

The following code implements the IRichEditCommandFactoryService descendant which generates customized SaveDocumentCommand and SaveDocumentAsCommand commands. The command descendants override the ExecuteCore methods to display a message after a document has been saved. The IsModified internal property indicates unsaved changes in the document. If this property is not changed to false after saving a document, it signals that the save action failed.

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