About

JetXLL was created by Len Holgate and JetByte Limited. Len has worked with traders and support staff at major investment banks for many years providing Excel integration and XLL development expertise.


With JetXLL we help everyone use Microsoft Excel to its fullest potential.

Recent Entries

Optional worksheet parameters and default values
Your custom worksheet functions can take optional parameters. The users of your worksheet can then decide whether to supply them…
By Len | Comments (0)
Integrating your addin with Excel - the function wizard
Whilst it's very easy to create a worksheet function using C# with JetXLL simply by adding the [WorksheetFunction] attribute to…
By Len | Comments (0)
Debugging a JetXLL addin
As you saw in the previous article, it's easy to build a custom worksheet function for Excel with JetXLL. Of…
By Len | Comments (0)