各种数据库连接的总结

SQL数据库的连接

return new SqlConnection("server=127.0.0.1;database=part;uid=sa;pwd=;");

oracle连接字符串

OracleConnection oCnn = new OracleConnection("Data Source=ORCL_SERVER;USER=M70;PASSWORD=mmm;");

oledb连接数据库
return new OleDbConnection("Provider=Microsoft.Jet.OleDb.4.0;Jet OLEDB:Database Password=密码;Data Source=" + HttpContext.Current.Server.MapPath("数据库名称"));
或
OleDbConnection con = new OleDbConnection("Provider=Microsoft.Jet.OleDb.4.0;Jet OLEDB:Database Password=;Data Source=" +AppDomain.CurrentDomain.BaseDirectory + "area.mdb");
SQLCE
new SqlCeConnection("Data Source =Storage Card/CG.sdf ");