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API Reference

Error Notification

In This Article
Implementing the Error Notification Behavior
Example: How to Validate Rows and Indicate Errors

This document describes how to implement error notifications for a data source, using IDXDataErrorInfo.

grid-errornotification

#Implementing the Error Notification Behavior

When binding a grid to a custom data source (e.g. data created at runtime), you generally create two classes:

  • The class representing a data source. This class implements one of the interfaces (IList, IListSource, ITypedList, IBindingList) and provides access to the collection of records.
  • The class implementing a single record in a data source.

To support error notifications, the class encapsulating a single record must implement the IDXDataErrorInfo interface. This interface provides two methods, which when implemented, get errors for the entire row and for individual cells (data source fields). As a result, the grid automatically displays error icons within cells with invalid values. Pointing to such an error icon displays a tooltip with an error description.

  • IDXDataErrorInfo.GetPropertyError - When implemented by a class, returns information on an error associated with a specified property (data field) of a data object.
  • IDXDataErrorInfo.GetError - When implemented by a class, returns information on an error associated with a data object (row).

#Example: How to Validate Rows and Indicate Errors