Oledb excel connection string

conn.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:UsersNickDesktopPricing2.xlsx" + @";Extended Properties=""Excel 12.0 Xml;HDR=Yes;IMEX=1;ImportMixedTypes=Text;TypeGuessRows=0""";

ImportMixedTypes=Text;TypeGuessRows=0

3

Xlsx files 

«HDR=Yes;» indicates that the first row contains column names, not data. «HDR=No;» indicates the opposite.

Treating data as text
Use this one when you want to treat all data in the file as text, overriding Excels column type «General» to guess what type of data is in the column.

If you want to read the column headers into the result set (using HDR=NO even though there is a header) and the column data is numeric, use IMEX=1 to avoid crash.To always use IMEX=1 is a safer way to retrieve data for mixed data columns. Consider the scenario that one Excel file might work fine cause that file’s data causes the driver to guess one data type while another file, containing other data, causes the driver to guess another data type. This can cause your app to crash.

Xlsb files
Connect to Excel 2007 (and later) files with the Xlsb file extension. That is the Office Open XML format saved in a binary format. I e the structure is similar but it’s not saved in a text readable format as the Xlsx files and can improve performance if the file contains a lot of data.

Xlsm files
Connect to Excel 2007 (and later) files with the Xlsm file extension. That is the Office Open XML format with macros enabled.

«HDR=Yes;» indicates that the first row contains column names, not data. «HDR=No;» indicates the opposite.

Excel 97-2003 Xls files with ACE OLEDB 12.0
You can use this connection string to use the Office 2007 OLEDB driver (ACE 12.0) to connect to older 97-2003 Excel workbooks.

«HDR=Yes;» indicates that the first row contains column names, not data. «HDR=No;» indicates the opposite. 

No headers in Excel sheet
Excel File=C:myExcelFile.xlsx;Header=False;
Pseudo column names (A,B,C) are used instead. 

Caching data
Excel File=C:myExcelFile.xlsx;Cache Location=C:cache.db;Auto Cache=true;
Offline=false;
To retrieve data from the cache, add «#Cache» to the table name. For example, to query cached data from the «Sheet» table, execute «SELECT * FROM [Sheet#Cache]». 

Caching data and metadata
Excel File=C:myExcelFile.xlsx;Cache Location=C:cache.db;Auto Cache=true;
Offline=false;Cache Metadata=true;
The table metadata will also be cached instead of retrieving it from the data source. This improves connection performance. 

Cached data only / Offline mode
Excel File=C:myExcelFile.xlsx;Offline=true;Query Passthrough=true;
Cache Location=C:cache.db;
SELECT statements will always retrieve data from the cache. DELETE/UPDATE/INSERT statements is not allowed and will throw an exception. Excel 2000Excel 2002Excel 2003Excel 2007Excel 2010Excel 2013Excel 97

Using an External Cache Provider
RSSBus drivers have the ability to cache data in a separate database such as SQL Server or MySQL instead of in a local file using the following syntax:
Cache Provider=Provider.Namespace;
Cache Connection=’Connection String to Cache Database’;
Above is just an example to show how it works. It can be used both with «Auto Cache» and with «Cached Data Only / Offline Mode». 

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Using OleDb to read Excel 2007 xls file — connection string

• Question

• I wrote a windows form application in C# that uses ADO.Net to read from an Excel file. I receive xls files but have to manually save them as xlsx files because I can’t get the program to read xls files (I get «External table is not in the expected format»). As an aside, for broadest .net compatibility, I set each of the Projects (which create assemblies/dlls) for the application to .net framework 2.0.

  I have 2 questions:

  1. How can I get my program to read xls files when Excel 2007 is installed?

  2. How can I support environments where Excel 2002 and Excel 2003 are installed — I assume different connection strings and have the users ONLY open xls files?

  Code Snippet:

  DbProviderFactory factory = DbProviderFactories.GetFactory(«System.Data.OleDb»);

  DbConnection connection = factory.CreateConnection();

  connection.ConnectionString = «whatever»;

  connection.Open();

  Connection strings I’ve tried:

  // The first one worked for xlsx files w/ Excel 2007 installed:

  Provider=Microsoft.ACE.OLEDB.12.0;Data Source=myFile.xls;Extended Properties=»»Excel 12.0;IMEX=1;HDR=YES;»»

  Provider=Microsoft.Jet.OLEDB.4.0;Data Source=myFile.xls;Extended Properties=»»Excel 8.0;HDR=Yes;IMEX=1;»»

  Provider=Microsoft.Jet.OLEDB.4.0;Data Source=myFile.xls;Extended Properties=»»Excel 5.0;HDR=Yes;IMEX=1;»»

ODBC DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC — Standard Connection

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Driver={SQL Server};" + 
              "Server=DataBaseNamex;" + 
              "DataBase=DataBaseName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC — Trusted Connection

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Driver={SQL Server};" + 
              "Server=ServerName;" + 
              "DataBase=DataBaseName;" + 
              "Uid=;" + 
              "Pwd=;"; 
conn.Open();
// or
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Driver={SQL Server};" + 
              "Server=ServerName;" + 
              "DataBase=DataBaseName;" + 
              "Trusted_Connection=Yes;"; 
conn.Open();

OleDb — Standard Connection

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=SQLOLEDB;" + 
              "Data Source=ServerName;" + 
              "Initial Catalog=DataBaseName;" + 
              "User id=UserName;" + 
              "Password=Secret;"; 
conn.Open();

OleDb — Trusted Connection

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=SQLOLEDB;" + 
              "Data Source=ServerName;" + 
              "Initial Catalog=DataBaseName;" + 
              "Integrated Security=SSPI;"; 
conn.Open();

OleDb — via IP Address

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=SQLOLEDB;" + 
              "Network Library=DBMSSOCN;" + 
              "Data Source=xxx.xxx.xxx.xxx,1433;" + 
              "Initial Catalog=DataBaseName;" + 
              "User id=UserName;" + 
              "Password=Secret;"; 
conn.Open();

.NET DataProvider — Standard Connection

using System.Data.SqlClient;
var conn = new SqlDbConnection();
conn.ConnectionString = 
              "Data Source=ServerName;" + 
              "Initial Catalog=DataBaseName;" + 
              "User id=UserName;" + 
              "Password=Secret;"; 
conn.Open();

.NET DataProvider — Trusted Connection

using System.Data.SqlClient;
var conn = new SqlConnection();
conn.ConnectionString = 
              "Data Source=ServerName;" + 
              "Initial Catalog=DataBaseName;" + 
              "Integrated Security=SSPI;"; 
conn.Open();

.NET DataProvider — via IP Address

using System.Data.SqlClient;
var conn = new SqlConnection();
conn.ConnectionString = 
              "Network Library=DBMSSOCN;" + 
              "Data Source=xxx.xxx.xxx.xxx,1433;" + 
              "Initial Catalog=DataBaseName;" + 
              "User Id=UserName;" + 
              "Password=Secret;"; 
conn.Open();

.NET Data Provider — Default Relative Path — Standard Connection

using System.Data.SqlClient;
var conn = new SqlConnection();
conn.ConnectionString = 
     "Data Source=.SQLExpress;" + 
     "User Instance=true;" + 
     "User Id=UserName;" + 
     "Password=Secret;" + 
     "AttachDbFilename=|DataDirectory|DataBaseName.mdf;"
conn.Open();

.NET Data Provider — Default Relative Path — Trusted Connection

using System.Data.SqlClient;
var conn = new SqlConnection();
conn.ConnectionString = 
     "Data Source=.SQLExpress;" + 
     "User Instance=true;" + 
     "Integrated Security=true;" + 
     "AttachDbFilename=|DataDirectory|DataBaseName.mdf;"
conn.Open();

.NET Data Provider — Custom Relative Path — Standard Connection

using System.Data.SqlClient;
AppDomain.CurrentDomain.SetData(
     "DataDirectory", "C:MyPath");
var conn = new SqlConnection();
conn.ConnectionString = 
     "Data Source=.SQLExpress;" + 
     "User Instance=true;" + 
     "User Id=UserName;" + 
     "Password=Secret;" + 
     "AttachDbFilename=|DataDirectory|DataBaseName.mdf;"
conn.Open();

.NET Data Provider — Custom Relative Path — Trusted Connection

using System.Data.SqlClient;
AppDomain.CurrentDomain.SetData(
     "DataDirectory", "C:MyPath");
var conn = new SqlConnection();
conn.ConnectionString = 
     "Data Source=.SQLExpress;" + 
     "User Instance=true;" + 
     "Integrated Security=true;" + 
     "AttachDbFilename=|DataDirectory|DataBaseName.mdf;"
conn.Open();

.NET Data Provider — Absolute Path — Standard Connection

using System.Data.SqlClient;
var conn = new SqlConnection();
conn.ConnectionString = 
     "Data Source=.SQLExpress;" + 
     "User Instance=true;" + 
     "User Id=UserName;" + 
     "Password=Secret;" + 
     "AttachDbFilename=C:MyPathDataBaseName.mdf;"
conn.Open();

.NET Data Provider — Absolute Path — Trusted Connection

using System.Data.SqlClient;
var conn = new SqlConnection();
conn.ConnectionString = 
     "Data Source=.SQLExpress;" + 
     "User Instance=true;" + 
     "Integrated Security=true;" + 
     "AttachDbFilename=C:MyPathDataBaseName.mdf;"
conn.Open();

ODBC DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = "Dsn=DsnName";
conn.Open();

ODBC — Standard Security

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
    "Driver={Microsoft Access Driver (*.mdb)};" + 
    "Dbq=c:myPathmyDb.mdb;" + 
    "Uid=Admin;Pwd=;"; 
conn.Open();

ODBC — Workgroup (System Database)

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
    "Driver={Microsoft Access Driver (*.mdb)};" + 
    "Dbq=c:myPathmyDb.mdb;" + 
    "SystemDb=c:myPathmyDb.mdw;"; 
conn.Open();

ODBC — Exclusive Use

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
     "Driver={Microsoft Access Driver (*.mdb)};" + 
     "Dbq=c:myPathmyDb.mdb;" + 
     "Exclusive=1;"; 
     "Uid=Admin;Pwd=;"; 
conn.Open();

OleDb with MS Jet — Standard Security

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
           "Provider=Microsoft.Jet.OLEDB.4.0;" + 
           "Data Source=c:mypathmyDb.mdb;" + 
           "User id=admin;" + 
           "Password=";
conn.Open();

OleDb with MS Jet — Workgroup (System Database)

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
           "Provider=Microsoft.Jet.OLEDB.4.0;" + 
           "Data Source=c:mypathmyDb.mdb;" + 
           "System Database=c:mypathmyDb.mdw;"; 
conn.Open();

OleDb with MS Jet — With Password

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
           "Provider=Microsoft.Jet.OLEDB.4.0;" + 
           "Data Source=c:mypathmyDb.mdb;" + 
           "Database Password=Secret;"
conn.Open();

ODBC DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC — New Microsoft Driver

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
           "Driver={Microsoft ODBC for Oracle};" + 
           "Server=OracleServer.world;" + 
           "Uid=UserName;" + 
           "Pwd=Secret;"; 
conn.Open();

ODBC — Old Microsoft Driver

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
    "Driver={Microsoft ODBC Driver for Oracle};" + 
    "ConnectString=OracleServer.world;" + 
    "Uid=UserName;" + 
    "Pwd=Secret;"; 
conn.Open();

ODBC — Oracle Driver

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
    "Driver={Oracle ODBC Driver};" + 
    "Dbq=myDataBase;" + // define in tsnames.ora
    "Uid=UserName;" + 
    "Pwd=Secret;"; 
conn.Open();

OleDb — Microsoft Driver

uusing System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=MSDAORA;" + 
              "Data Source=ServerName;" + 
              "User id=UserName;" + 
              "Password=Secret;"; 
conn.Open();

OleDb — Oracle Driver — Standard Connection

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=OraOLEDB.Oracle;" + 
              "Data Source=ServerName;" + 
              "User id=UserName;" + 
              "Password=Secret;"; 
conn.Open();

OleDb — Oracle Driver — Trusted Connection

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=OraOLEDB.Oracle;" + 
              "Data Source=ServerName;" + 
              "OSAuthent=1;";
conn.Open();
// or 
using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=OraOLEDB.Oracle;" + 
              "Data Source=ServerName;" + 
              "User id=/" + 
              "Password=;"; 
conn.Open();

.NET DataProvider from Microsoft — Standard Connection

using System.Data.OracleClient;
var conn = new OracleConnection();
conn.ConnectionString = 
              "Data Source=ServerName;" + 
              "User id=UserName;"; 
              "Password=Secret;"; 
conn.Open();

.NET DataProvider from Microsoft — Trusted Connection

using System.Data.OracleClient;
var conn = new OracleConnection();
conn.ConnectionString = 
              "Data Source=Servername;" + 
              "Integrated Security=Yes;"; 
conn.Open();

.NET DataProvider from Oracle — Standard Connection

using Oracle.DataAccess.Client;
var conn = new OracleConnection();
conn.ConnectionString = 
              "Data Source=ServerName;" + 
              "User id=UserName;"; 
              "Password=Secret;"; 
conn.Open();

.NET DataProvider from Oracle — Trusted Connection

using Oracle.DataAccess.Client;
var conn = new OracleConnection();
conn.ConnectionString = 
              "Data Source=Servername;" + 
              "Integrated Security=Yes;"; 
conn.Open();

ODBC DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC without DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Driver={IBM DB2 ODBC DRIVER};" + 
              "DataBase=DataBaseName;" + 
              "HostName=ServerName;" + 
              "Protocol=TCPIP;" + 
              "Port=PortNumber;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

OleDb — Microsoft Driver

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
           "Driver=DB2OLEDB;" + 
           "Network Transport Library=TCPIP;" + 
           "Network Address=xxx.xxx.xxx.xxx;" + 
           "Package Collection=CollectionName;" + 
           "Initial Catalog=DataBaseName;" + 
           "User id=UserName;" + 
           "Password=Secret;"; 
conn.Open();

OleDb — IBM Driver

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
            "Driver=IBMDADB2;" + 
            "DataBase=DataBaseName;" + 
            "HostName=ServerName;" + 
            "Protocol=TCPIP;" + 
            "Port=PortNumber;" + 
            "Uid=UserName;" + 
            "Pwd=Secret;"; 
conn.Open();

.NET DataProvider from IBM

using IBM.Data.DB2;
var conn = new Db2Connection();
conn.ConnectionString = 
              "DataBase=DataBaseName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;" + 
conn.Open();

ODBC DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC — MyODBC Driver — local database

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
            "Driver={MySql};" + 
            "Server=localhost;" + 
            "Option=16834;" + 
            "DataBase=DataBaseName;" 
conn.Open();

ODBC — MyODBC Driver — remote database

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
            "Driver={MySql};" + 
            "Server=db.domain.com;" + 
            "Option=131072;" + 
            "Port=3306;" + 
            "Stmt=;" + 
            "DataBase=DataBaseName;" + 
            "Uid=UserName;" + 
            "Pwd=Secret;" 
conn.Open();

ODBC — MySQL ODBC 3.51 Driver

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
     "Driver={MySql ODBC 3.51 Driver};" + 
     "Server=ServerName;" + 
     "Option=16834;" + 
     "Port=3306;" + 
     "Stmt=;" + 
     "DataBase=DataBaseName;" + 
     "Uid=UserName;" + 
     "Pwd=Secret;" 
conn.Open();
// or 
var conn = new OdbcConnection();
conn.ConnectionString = 
     "DRIVER={MySql ODBC 3.51 Driver};" + 
     "SERVER=ServerName;" + 
     "DATABASE=DataBaseName;" + 
     "USER=UserName;" + 
     "PASSWORD=Secret;" 
conn.Open();

OleDb

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
            "Provider=MySqlProv;" + 
            "Data Source=ServerName;" + 
            "User id=UserName;" + 
            "Password=Secret;" 
conn.Open();

.NET DataProvider from CoreLab

using CoreLab.MySql;
var conn = new MySqlConnection();
conn.ConnectionString = 
              "Host=ServerName;" + 
              "DataBase=DataBaseName;" + 
              "Protocol=TCP;" + 
              "Port=3306;" + 
              "Direct=true;" + 
              "Compress=false;" + 
              "Pooling=true;" + 
              "Min Pool Size=0;" + 
              "Max Pool Size=100;" + 
              "Connection Lifetime=0;" + 
              "User id=UserName;" + 
              "Password=Secret;" + 
conn.Open();

ODBC DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC — Sybase System 12 (12.5) ODBC Driver

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Driver={SYBASE ASE ODBC Driver};" + 
              "Srvr=ServerName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC — Sybase System 11 ODBC Driver

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
           "Driver={SYBASE SYSTEM 11};" + 
           "Srvr=ServerName;" + 
           "Uid=UserName;" + 
           "Pwd=Secret;"; 
conn.Open();

ODBC — Intersolv 3.10 ODBC Driver

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
        "Driver={INTERSOLV 3.10 32-BIT Sybase};" + 
        "Srvr=ServerName;" + 
        "Uid=UserName;" + 
        "Pwd=Secret;"; 
conn.Open();

ODBC — SQL Anywhere

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
         "ODBC;" + 
         "Driver={Sybase SQL Anywhere 5.0};" + 
         "DefaultDir=c:myfolder;" + 
         "Dbf=c:mypathdbname.db;" + 
         "Uid=UserName;" + 
         "Pwd=Secret;" + 
         "Dsn="""";";     // Must be included!
conn.Open();

OleDb — Sybase Adaptive Server Enterprise (ASE)

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=Sybase.ASEOLEDBProvider;" + 
              "Server Name=ServerName,5000;" + 
              "Initial Catalog=DataBaseName;" + 
              "User id=UserName;" + 
              "Password=Secret;"; 
conn.Open();
// optionally, replace 
// 'Server Name' with 'Srvr', and 
// 'Initial Catalog' with 'Catalog'

.NET DataProvider from Sybase

using Sybase.Data.AseClient;
var conn = new AseConnection();
conn.ConnectionString = 
              "Data Source=ServerName;" + 
              "Initial Catalog=DataBaseName;" + 
              "User id=UserName;" + 
              "Password=Secret;"; 
conn.Open();

ODBC DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC — EasySoft ODBC Driver — local machine

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
      "Driver={Easysoft IB6 ODBC};" + 
      "Server=localhost;" + 
      "DataBase=localhost:C:MyPathDbName.gdb;" + 
      "Uid=UserName;" + 
      "Pwd=Secret;"; 
conn.Open();

ODBC — EasySoft ODBC Driver — remote machine

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
      "Driver={Easysoft IB6 ODBC};" + 
      "Server=ServerName;" + 
      "DataBase=ServerName:C:MyPathDbName.gdb;" + 
      "Uid=UserName;" + 
      "Pwd=Secret;"; 
conn.Open();

ODBC — Intersolv ODBC Driver — local machine

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
      "Driver=" + 
   "{INTERSOLV InterBase ODBC Driver (*.gdb)};" + 
      "Server=localhost;" + 
      "DataBase=localhost:C:MyPathDbName.gdb;" + 
      "Uid=UserName;" + 
      "Pwd=Secret;"; 
conn.Open();

ODBC — Intersolv ODBC Driver — remote machine

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
      "Driver=" + 
   "{INTERSOLV InterBase ODBC Driver (*.gdb)};" + 
      "Server=ServerName;" + 
      "DataBase=ServerName:C:MyPathDbName.gdb;" + 
      "Uid=UserName;" + 
      "Pwd=Secret;"; 
conn.Open();

ODBC DSN — INFORMIX 3.30 ODBC Driver

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Host=HostName;" + 
              "Server=ServerName;" + 
              "Service=ServerName;" + 
              "Protocol=olsoctcp;" + 
              "Database=DataBaseName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC without DSN — INFORMIX 3.30 ODBC Driver

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn="";" + 
              "Driver={INFORMIX 3.30 32 BIT};" + 
              "Host=HostName;" + 
              "Server=ServerName;" + 
              "Service=ServerName;" + 
              "Protocol=olsoctcp;" + 
              "Database=DataBaseName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC Informix-CLI 2.5 ODBC Driver

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
          "Driver={Informix-CLI 2.5 (32 Bit)};" + 
          "Server=ServerName;" + 
          "DataBase=DataBaseName;" + 
          "Uid=UserName;" + 
          "Pwd=Secret;"; 
conn.Open();

OleDb — IBM Informix OleDb Provider

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
        "Driver=IFXOLEDBC;" + 
        "Data Source=DataBaseName@ServerName;" + 
        "User id=UserName;" + 
        "Password=Secret;"; 
        "Persist Security Info=true;"; 
conn.Open();

ODBC DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC without DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
       "Driver={Microsoft Excel Driver (*.xls)};" + 
       "Driverid=790;" + 
       "Dbq=C:MyPathSpreadSheet.xls;" + 
       "DefaultDir=C:MyPath;"; 
conn.Open();

OleDb with MS Jet

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
    "Driver=Microsoft.Jet.OLEDB.4.0;" + 
    "Data Source=C:MyPathSpreadSheet.xls;" + 
   @"Extended Properties=""Excel 8.0;HDR=Yes"""; 
conn.Open();

<

ODBC DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();

ODBC without DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
 "Driver={Microsoft Text Driver (*.txt; *.csv)};" + 
 "Dbq=C:MyPath;" + 
 "Extensions=asc,csv,tab,txt;"; 
conn.Open();
// Use: sql = "Select * From MyTextFile.txt"

OleDb with MS Jet

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
      "Driver=Microsoft.Jet.OLEDB.4.0;" + 
      "Data Source=C:MyPath;" + 
      "Extended Properties=" + 
        @"""text;HDR=Yes;FMT=Delimited"""; 
conn.Open();
// Use: sql = "Select * From MyTextFile.txt"

ODBC DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = "Dsn=DsnName";
conn.Open();
// Use: sql = "Select * From MyDb.dbf"

ODBC without DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
     "Driver={Microsoft dBASE Driver (*.dbf)};" + 
     "Driverid=277;" + 
     "Dbq=C:MyPath";
conn.Open();
// Use: sql = "Select * From MyDb.dbf"

ODBC DSN

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = "Dsn=DsnName";
conn.Open();

ODBC without DSN — Database container (dbc)

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
      "Driver={Microsoft Visual FoxPro Driver};" + 
      "SourceType=DBC;" + 
      "SourceDB=C:MyPathMyDb.dbc;" + 
      "Exclusive=No"; 
conn.Open();

ODBC without DSN — Free table directory

using System.Data.Odbc;
var conn = new OdbcConnection();
conn.ConnectionString = 
      "Driver={Microsoft Visual FoxPro Driver};" + 
      "SourceType=DBF;" + 
      "SourceDB=C:MyPath;" + 
      "Exclusive=No"; 
conn.Open();

OleDb — Database container (dbc)

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=VFPOLEDB;" + 
              "Data Source=C:MyPathMyDb.dbc;" + 
              "Collating Sequence=machine;" + 
              "Password=Secret;"; 
conn.Open();

OleDb — Free table directory

using System.Data.OleDb;
var conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=VFPOLEDB;" + 
              "Data Source=C:MyPath;" + 
              "Collating Sequence=general;" + 
              "Password=Secret;"; 
conn.Open();

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