An error occurred while operating Excel with OLED.

Error

Conncet. open () exception

No error message available, resultCode: E_nointerface (0x80004002)

The connection string is incorrect, but other pages can be opened with the same string.

The Troubleshooting result is that a field is added to the header of the page (because there are multiple data table operations on this page, you can automatically tune the stored procedure in a simple way, but an error is reported in Excel)

<% @ Page Language = "C #" autoeventwireup = "true" codefile = "unitapply. aspx. cs" inherits = "unitapply"Transaction = "required" %>