// Called before detaching ColumnVirtualizationManager from DataGridContext protected virtual void Uninitialize() { this.ResetInternalState(); m_dataGridContext.PropertyChanged -= new PropertyChangedEventHandler(this.DataGridContext_PropertyChanged); ItemsSourceChangeCompletedEventManager.RemoveListener(m_dataGridContext.DataGridControl, this); ViewChangedEventManager.RemoveListener(m_dataGridContext.DataGridControl, this); ThemeChangedEventManager.RemoveListener(m_dataGridContext.DataGridControl, this); VisibleColumnsUpdatedEventManager.RemoveListener(m_dataGridContext.Columns, this); m_dataGridContext = null; }