问题
Which version of Visual Basic does SSRS support?
MSDN page says that you write Visual Basic in the report code but doesn't say much about the version.
回答1:
Good question. Microsoft are not very clear about this. The RDL specification for SQL Server 2008 R2 states that expressions "are defined in a Visual Basic compatible syntax", but does not provide any other detail, except an obsolete link. There is also no mention of custom code other than .NET references for precompiled dlls.
Code written in a report is stored as text within the RDL file after it is deployed, which means that it is either interpreted on the fly or JIT-compiled when it the report is run. For this reason, if you have a large volume of, or intensive code, precompiling to a dll and referencing it in the report will offer better performance.
来源：https://stackoverflow.com/questions/27943204/which-version-of-vb-is-used-in-ssrs