public delegate void DataSourceRootSummariesChangedHandler( object sender, DataSourceRootSummariesChangedEventArgs args )
'宣言 Public Delegate Sub DataSourceRootSummariesChangedHandler( _ ByVal sender As Object, _ ByVal args As DataSourceRootSummariesChangedEventArgs _ )
DataSourceRootSummariesChangedHandler メンバ Infragistics.Win.DataVisualization.DataSource 名前空間