I am using Crystal Reports viewer with integrated security

Question

This is on VS 2010 C# and crystal v13

Why am I still asked for database login when report initialises.  I have set up Integrated security on the connection info and propagated it thru the table set.

I have been told set EnableDatabaseLogonPrompt = "false" but I can only see examples of ow to set that in asp.net, this is a windows form application. Can someone tell me how to do this on a windows form application.

Many thanks