ADO.NET in a Nutshell

Name

MergeFailedEventHandler

Synopsis

This delegate represents the method that will handle the DataSet.MergeFailed event. This event occurs if you invoke DataSet.Merge( ) to combine two DataSet objects where source and target rows have a different primary key. Note that this event occurs only if DataSet.EnforceConstraints is set to true, and it doesn’t occur if the schemas are invalid (in which case an exception is thrown before the merge process is started). When a merge fails, the DataSet.EnforceConstraints property is set to false, all the data is retained, and the rows that are invalid are marked with a descriptive DataRow.RowError. You can’t reenable constraint checking until these conflicts are resolved.

public delegate void MergeFailedEventHandler(object sender, MergeFailedEventArgs e);

Associated Events

DataSet.MergeFailed( )