Well now i am getting warning msg from intellisense:

Missing attribute value on attribute 'server.MapPath'

VB Code:
  1. <add name="DBConnectionString" connectionString="Provider=Microsoft.Jet.OLEDB.4.0; Data Source==" & server.MapPath("\Prima\App_Data\DB.mdb") & "; providerName="System.Data.OleDb" />

Tnx