我在asp.net中生成excel 时出现如下错误,什么意思?
我引用了excel 9.0
Dim oExcel As New Excel.Application
Dim wb As Excel.Workbooks
wb = oExcel.Workbooks.Open("C:\Temp.xls")
C:\Temp.xls 是存在的
当我执行 wb = oExcel.Workbooks.Open("C:\Temp.xls")时出现如下错误,
An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in systemadmin.businessrules.dll
Additional information: Old format or invalid type library.
什么意思?怎样解决?