With password This is the connection string to use when you have an access database protected with a password using the Set Database Password function in Access. Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;Jet OLEDB:Database Password=MyDbPassword;
================================================================================= Oracle Set Your custom connection strings values ODBC New version
Driver={Microsoft ODBC for Oracle};Server=myServerAddress;Uid=myUsername;Pwd=myPassword;
Old version
Driver={Microsoft ODBC Driver for Oracle};ConnectString=OracleServer.world;Uid=myUsername;Pwd=myPassword;
OLE DB, OleDbConnection (.NET) Standard security This connection string uses a provider from Microsoft. Provider=msdaora;Data Source=MyOracleDB;User Id=myUsername;Password=myPassword;
Standard Security This connection string uses a provider from Oracle. Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;User Id=myUsername;Password=myPassword;
This one works only with Oracle 8i release 3 or later
Specifying username and password
Data Source=MyOracleDB;User Id=myUsername;Password=myPassword;Integrated Security=no;
This one works only with Oracle 8i release 3 or later Missing the System.Data.OracleClient namespace? Download .NET Managed Provider for Oracle >> Great article! "Features of Oracle Data Provider for .NET" by Rama Mohan G. at C# Corner >>
Omiting tnsnames.ora This is another type of Oracle connection string that doesn't rely on you to have a DSN for the connection. You create a connection string based on the format used in the tnsnames.ora file without the need to actually have one of these files on the client pc. SERVER=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MyHost)(PORT=MyPort))(CONNECT_DATA=(SERVICE_NAME=MyOracleSID)));uid=myUsername;pwd=myPassword;
Core Labs OraDirect (.NET) Standard
User ID=myUsername;Password=myPassword;Host=ora;Pooling=true;Min Pool Size=0;Max Pool Size=100;Connection Lifetime=0;
Read more at Core Lab >> And at the product page >>
Access数据库 ODBC
Standard Security
Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\mydatabase.mdb;Uid=Admin;Pwd=;
Workgroup
Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\mydatabase.mdb;SystemDB=C:\mydatabase.mdw;
Exclusive
Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\mydatabase.mdb;Exclusive=1;Uid=admin;Pwd=;
OLE DB, OleDbConnection (.NET)
Standard security
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;User Id=admin;Password=;
Workgroup (system database)
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;Jet OLEDB:System Database=system.mdw;
With password
This is the connection string to use when you have an access database protected with a password using the Set Database Password function in Access.
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;Jet OLEDB:Database Password=MyDbPassword;
=================================================================================
Oracle Set Your custom connection strings values ODBC
New version
Driver={Microsoft ODBC for Oracle};Server=myServerAddress;Uid=myUsername;Pwd=myPassword;
Old version
Driver={Microsoft ODBC Driver for Oracle};ConnectString=OracleServer.world;Uid=myUsername;Pwd=myPassword;
OLE DB, OleDbConnection (.NET)
Standard security
This connection string uses a provider from Microsoft.
Provider=msdaora;Data Source=MyOracleDB;User Id=myUsername;Password=myPassword;
Standard Security
This connection string uses a provider from Oracle.
Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;User Id=myUsername;Password=myPassword;
Trusted Connection
Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;OSAuthent=1;
OracleConnection (.NET)
Standard
Data Source=MyOracleDB;Integrated Security=yes;
This one works only with Oracle 8i release 3 or later
Specifying username and password
Data Source=MyOracleDB;User Id=myUsername;Password=myPassword;Integrated Security=no;
This one works only with Oracle 8i release 3 or later
Missing the System.Data.OracleClient namespace? Download .NET Managed Provider for Oracle >>
Great article! "Features of Oracle Data Provider for .NET" by Rama Mohan G. at C# Corner >>
Omiting tnsnames.ora
This is another type of Oracle connection string that doesn't rely on you to have a DSN for the connection. You create a connection string based on the format used in the tnsnames.ora file without the need to actually have one of these files on the client pc.
SERVER=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MyHost)(PORT=MyPort))(CONNECT_DATA=(SERVICE_NAME=MyOracleSID)));uid=myUsername;pwd=myPassword;
Core Labs OraDirect (.NET)
Standard
User ID=myUsername;Password=myPassword;Host=ora;Pooling=true;Min Pool Size=0;Max Pool Size=100;Connection Lifetime=0;
Read more at Core Lab >>
And at the product page >>
Data Shape
MS Data Shape
Provider=MSDataShape.1;Persist Security Info=False;Data Provider=MSDAORA;Data Source=orac;User Id=myUsername;Password=myPassword;
string connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excel文件名（绝对路径） +";Extended Properties=Excel 8.0;";