How to connect to a MS Access file mdb using C

Question

I m trying to connect to a mdb file and I understand that I would need Microsoft OLEDB JET 4 0 data provider  Unfortunately  I do not have it installed on the  University  machine  Since  they don t provide that provider  I believe there should be a way around    How can I connect to the file without Microsoft OLEDB JET 4 0 or is there any alternative    I have following providers     I have tried using OLE DB Provider for Microsoft Directory Services  to which while testing connection  I get  Test succeeded but some settings were not accepted by the provider   I took that string and used it anyway and I got ADsDSOObject  failed with no error message available  result code  DB E ERRORSINCOMMAND 0x80040E14

User · Answer

Try this    using System Data OleDb   OleDbConnection dbConn   dConn   new OleDbConnection  Provider Microsoft ACE OLEDB 12 0 Data Source Registration accdb

User · Answer

Here s how to use a Jet OLEDB or Ace OLEDB Access DB   using System Data  using System Data OleDb   string myConnectionString     Provider Microsoft Jet OLEDB 4 0                                 Data Source C  myPath myFile mdb                                                                     Persist Security Info True                                 Jet OLEDB Database Password myPassword    try          Open OleDb Connection     OleDbConnection myConnection   new OleDbConnection        myConnection ConnectionString   myConnectionString      myConnection Open            Execute Queries     OleDbCommand cmd   myConnection CreateCommand        cmd CommandText    SELECT   FROM  myTable        OleDbDataReader reader   cmd ExecuteReader CommandBehavior CloseConnection      close conn after complete         Load the result into a DataTable     DataTable myDataTable   new DataTable        myDataTable Load reader     catch  Exception ex        Console WriteLine  OLEDB Connection FAILED      ex Message

User · Answer

The simplest way to connect is through an OdbcConnection using code like this  using System Data Odbc   using OdbcConnection myConnection   new OdbcConnection          myConnection ConnectionString   myConnectionString      myConnection Open           execute queries  etc      where myConnectionString is something like this  myConnectionString     Driver  Microsoft Access Driver    mdb         Dbq C  mydatabase mdb Uid Admin Pwd     See ConnectionStrings  In alternative you could create a DSN and then use that DSN in your connection string   Open the Control Panel - Administrative Tools - ODBC Data Source Manager Go to the System DSN Page and ADD a new DSN Choose the Microsoft Access Driver    mdb  and press END Set the Name of the DSN  choose MyDSN for this example  Select the Database to be used Try the Compact or Recover commands to see if the connection works   now your connectionString could be written in this way  myConnectionString    DSN myDSN

User · Answer

Another simplest way to connect is through an OdbcConnection using App config file like this     lt appSettings gt         lt add key  Conn  value  Provider Microsoft Jet OLEDB 4 0 Data Source  DataDirectory MyDB mdb Persist Security Info True   gt     lt  appSettings gt    MyDB mdb is my database file and it is present in current primary application folder with main exe file   if your mdf file has password then use like this     lt appSettings gt       lt add key  Conn  value  Provider Microsoft Jet OLEDB 4 0 Data Source  DataDirectory MyDB mdb Persist Security Info True Jet OLEDB Database Password Admin  123   gt     lt  appSettings gt

User · Answer

What Access File extension or you using  The Jet OLEDB or the Ace OLEDB  If your Access DB is  mdb  aka Jet Oledb   using System  using System Collections Generic  using System Linq  using System Text  using System Data Oledb  namespace MembershipInformationSystem Helpers       public class dbs               private String connectionString          private String OleDBProvider    Microsoft JET OLEDB 4 0     if ACE Microsoft ACE OLEDB 12 0         private String OleDBDataSource    C   yourdb mdb           private String OleDBPassword    infosys           private String PersistSecurityInfo    False            public dbs                                 public dbs String connectionString                        this connectionString   connectionString                     public String konek                         connectionString    Provider     OleDBProvider     Data Source     OleDBDataSource     JET OLEDB Database Password     OleDBPassword     Persist Security Info     PersistSecurityInfo                   return connectionString

User · Answer

You should use  Microsoft OLE DB Provider for ODBC Drivers  to get to access to Microsoft Access  Here is the sample tutorial on using it  http   msdn microsoft com en-us library aa288452 v vs 71  aspx

[c#] How to connect to a MS Access file (mdb) using C#?

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