https://www.dotnetzone.gr:443/cs/blogs/papadi/archive/2007/04/02/catch-when.aspxHere is a tiny detail in the try/catch syntax of VB.NET you not be aware of - I wasn't until I recently discovered it in the documentation by accident : Try Catch ex As Exception When [Expression] End Try I recently needed this for a generic functionelCommunityServer 2.1 SP3 (Build: 20423.1)