That's Visual Basic, not C or C++. Please direct your question to a more appropriate forum.

I Upload Book1.xls in to IISServer machine c:\Inetpub\wwwroot

When I am Using this code in ASP

Dim objConn
Set objConn = Server.CreateObject ("ADODB.Connection")
'response.write Server.mappath("/")
'response.end
objConn.Open "Driver={Microsoft Excel Driver (*.xls)};DriverId=790;DBQ=" & Server.mappath("/book1.xls") &";ReadOnly= true ; UID=admin;"

Dim strSQL
excelfilename = "Book1.xls"

strSQL = "select * from " & excelfilename

Dim objRS
Set objRS = Server.CreateObject ("ADODB.RecordSet")
objRS.Open strSQL, objConn,2,3




Microsoft OLE DB Provider for ODBC Drivers (0x80004005)
[Microsoft][ODBC Excel Driver] The Microsoft Jet database engine cannot open the file 'Book1'. It is already opened exclusively by another user, or you need permission to view its data.

Please help me.

What part of "You're in the wrong forum" is difficult?