In multiple row selection mode, you can sync row selected states with a Boolean field in the bound data source. A new data binding mode will help you connect our WinForms Data Grid control to your data source, even when the entire record count is unknown or infinite by nature (like a web service). New records will load and appear on screen as users scroll the Grid vertically. Once incorporated into your app, you will be able to load (and display) only a small portion of your data source at start up. Our WinForms Grid ships with an 'Infinite Scrolling' mode – allowing you to more efficiently display data from very large data sources. To cancel selection, set the Cancel property to 'True' within the SelectionChanging event handler. You now have the ability to cancel selection in code. You can select multiple items by drawing a rectangular region with the CTRL key pressed.