Have you tried out SSIS. It's pretty simple to use and you can send rows from your csv file that cause insert errors to an error file. See http://www.mridey.com/blog/Lists/Posts/Post.aspx?List=321eab0d-e4d2-4523-914e-128a6688109f&ID=7

Yeah, something like this.. I created one user at pc01 and the same user at PC02 I impersonate my user at PC02 then I obtained to have access the protected folder in PC02 Tks 4all!!!! [:D]

The problem was solved :) Tks for all When I attached the mdf file, I needed attach it as Data File When I changed this option, everything works all right

What are you trying to accomplish, a conditional format which checks for an empty string or to delete an existing conditional format.  If the former have you tried: rng.FormatConditions.Add(XlFormatConditionType.xlCellValue, XlFormatConditionOperator.xlEqual, "\"\"", Type.Missing); Which is an escaped "" sequence, i.e. you're passing "" to the function not an empty string (0 characters in length).

Thanks Allan But I can to close one window.... The problem is many windows.. I'm going to explain my app, when time expire I need to close all windows that are open, however, some of these windows are ShowDialog, when I execute the sample code above the only windows that are closed are the MDIChildren, however, ShowDialog windows not is MDIChild and therefore still open, I can't handle these. I don't know who is owner of theses windows ShowDialog() I'm tired..:laugh: