OPC Client application, code to know the maximum length of my DB

Hello,

Before all, im' french, so excuse me for my english! ;)

I'm programming an OPC Client application for SIEMENS S7 with OPCautomation.Dll.

I develloped without too much trouble the whole tree of the OPC server, to objects I, O, PI, PO, T, C, and DB with OPCBrowser and its functions (movedown, showleafs ...)

In the DB objects, I correctly found my various DB (DB1, DB2 ....), no problem, but I can not find the code to know the maximum length of my DB to avoid overflow writing.

For example, if in S7-300 programm, DB1=650 bytes length, I wish to find this value, as OPCScout can to do.

Somebody help me?

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Split from Visual basic 2010 as OPC client application.