VB.NET-此段代码将在VS2010中运行，但不能在VS2008中运行-为什么？

Question

I coded this thing up in VS2010, it worked fine. I needed to port it to VS2008, which went smoothly, aside from fixing how a few lines were worded. But it won't run, and my error codes say it's in opening this database.

com = New OleDbConnection(DB_Path)
com.Open()

With a string at the top defining DB_Path

Public Const DB_Path As String = "Provider=Microsoft.Jet.OleDb.4.0;Data Source=.\ASPNetDB.mdb"

Those two lines of code at the only thing in a Try statement, so they're the only thing that could be going wrong here. And yes, I made sure to copy the database into the new directory. I even tried using the full direct path in there and that didn't work either.

So what have I missed?

Answer 1

On a 64bit machine in VS2008 you need to set the target CPU to 32bit in the project properties, no 64 bit DLL exist for database access. I hope this helps

Answer 2

只是一个猜测-但您可能必须在VS 2008中使用其他Jet提供程序（而不是4.0），因为它将针对.Net的早期版本。