operation failed with error 0x00000057

= (httpurlconnection) url.openconnection (); httpurlconnection.setconnecttimeout Httpurlconnection.setreadtimeout (5000);//Get the downloaded file Size//totalsize = Httpurlconnection.getcontentlength (); (Httpurlconnection.getresponsecode () = = 404) {throw new Exception ("fail!"); /This place should add a download failed processing, however, because we added a try---catch, has processed exception,//so do not have to process}InputStream = Httpurlconn

Environment in which an error occurs: Windows 7, Framework 4, 0, Microsoft Office 2007, VS2010, c # WinForm; part of the Code: String strConn = "Provider = Microsoft. ace. oleDb.12.0; Persist Security Info = False; "+" data source = "+ @ excelPath +"; Extended Properties = 'excel 12.0; HDR = yes; IMEX = 2 '"; oleDbConnection conn = new OleDbConnection (); conn. connectionString = strConn; try {OleDbCommand cmd = null; try {cmd = new OleDbCommand ("Ins

Database SQL Server, the test program displays an error message: "ADODB." The Recordset error "800a0e78" object is closed, operation is not allowed Independent test Database link, display error message: User "sa" Login failed. Reason: not associated with a trusted SQL Serve

Label:[Email protected] bin]#./mysqlhotcopy Can ' t locate data/dumper.pm in @INC (@INC contains:/usr/local/lib64/perl5/usr/local/share/perl5/usr/lib64/perl5/ Vendor_perl/usr/share/perl5/vendor_perl/usr/lib64/perl5/usr/share/perl5.) At./mysqlhotcopy Line 22.BEGIN failed--compilation aborted at./mysqlhotcopy Line 22.Yum Install Perl-devel perl-dbd-mysql-yMissing these 2 related packages,After installation, it's almost ready,If it is still an