The List Edit control can be customized to your project's requirements. Any customization replaces the existing List Edit control with the customized List Edit control. To customize the List Edit control, you need to create a custom class that inherits from the EnhancedDataGrid, which is the base List Edit control in your custom assembly. For more information, see Configuring the Desktop Client to Load our Custom Assemblies.
In the client customization training assembly there is a source code example of how to write a custom List Edit control, and this shows what overrides are available. This example can be found under the Custom ListEditGrid folder supplied with the training assembly.