Take a look at the samples in the Syncfusion\Essential Suite\Grid\Samples\CellTypes folder. All of them allow you to display the evenst as tehy happen when you do things like type into a cell, and meove to another one.
For more general events, if you have the source code for the Essential Grid, you can use the Assembly Manager to build a debug version of the library. With debug builds, you can include a exe.config file with the correct switches in your EXE folder to have the grid generate debug output showing things like events being hit. Here is a sample
Now in the GridPad sample config file, a lot of the switches have an 's' or 'x' in front of them. This effectively turns off that particular tracing. Remove these extra characters if you want to their output in the trace.
To see all the possible switches, look in the switches.cs file found in the grid's src folder.