(use serverName\instanceName as Data Source to use an specifik SQLServer instance, only SQLServer2000)
(DBMSSOCN=TCP/IP instead of Named Pipes, at the end of the Data Source is the port to use (1433 is the default))
(use serverName\instanceName as Data Source to use an specifik SQLServer instance, only SQLServer2000)
(DBMSSOCN=TCP/IP instead of Named Pipes, at the end of the Data Source is the port to use (1433 is the default))
C#:
using System.Data.SqlClient;
SqlConnection oSQLConn = new SqlConnection();
oSQLConn.ConnectionString="my connection string";
oSQLConn.Open();
VB.NET:
Imports System.Data.SqlClient
Dim oSQLConn As SqlConnection = New SqlConnection()
oSQLConn.ConnectionString="my connection string"
oSQLConn.Open()
Want to learn data shaping? Check out 4GuyfFromRolla's great article about Data Shaping >>
Name | Network library |
dbnmpntw | Win32 Named Pipes |
dbmssocn | Win32 Winsock TCP/IP |
dbmsspxn | Win32 SPX/IPX |
dbmsvinn | Win32 Banyan Vines |
dbmsrpcn | Win32 Multi-Protocol (Windows RPC) |
Name | Default | Description |
---|---|---|
Application Name | The name of the application, or '.Net SqlClient Data Provider' if no application name is provided. | |
AttachDBFilename -or- extended properties -or- Initial File Name |
The name of the primary file, including the full path name, of an attachable database. The database name must be specified with the keyword 'database'. | |
Connect Timeout -or- Connection Timeout |
15 | The length of time (in seconds) to wait for a connection to the server before terminating the attempt and generating an error. |
Connection Lifetime | 0 | When a connection is returned to the pool, its creation time is compared with the current time, and the connection is destroyed if that time span (in seconds) exceeds the value specified by connection lifetime. Useful in clustered configurations to force load balancing between a running server and a server just brought on-line. |
Connection Reset | 'true' | Determines whether the database connection is reset when being removed from the pool. Setting to 'false' avoids making an additional server round-trip when obtaining a connection, but the programmer must be aware that the connection state is not being reset. |
Current Language | The SQL Server Language record name. | |
Data Source -or- Server -or- Address -or- Addr -or- Network Address |
The name or network address of the instance of SQL Server to which to connect. | |
Enlist | 'true' | When true, the pooler automatically enlists the connection in the creation thread's current transaction context. |
Initial Catalog -or- Database |
The name of the database. | |
Integrated Security -or- Trusted_Connection |
'false' | Whether the connection is to be a secure connection or not. Recognized values are 'true', 'false', and 'sspi', which is equivalent to 'true'. |
Max Pool Size | 100 | The maximum number of connections allowed in the pool. |
Min Pool Size | 0 | The minimum number of connections allowed in the pool. |
Network Library -or- Net |
'dbmssocn' | The network library used to establish a connection to an instance of SQL Server. Supported values include dbnmpntw (Named Pipes), dbmsrpcn (Multiprotocol), dbmsadsn (Apple Talk), dbmsgnet (VIA), dbmsipcn (Shared Memory) and dbmsspxn (IPX/SPX), and dbmssocn (TCP/IP). The corresponding network DLL must be installed on the system to which you connect. If you do not specify a network and you use a local server (for example, "." or "(local)"), shared memory is used. |
Packet Size | 8192 | Size in bytes of the network packets used to communicate with an instance of SQL Server. |
Password -or- Pwd |
The password for the SQL Server account logging on. | |
Persist Security Info | 'false' | When set to 'false', security-sensitive information, such as the password, is not returned as part of the connection if the connection is open or has ever been in an open state. Resetting the connection string resets all connection string values including the password. |
Pooling | 'true' | When true, the SQLConnection object is drawn from the appropriate pool, or if necessary, is created and added to the appropriate pool. |
User ID | The SQL Server login account. | |
Workstation ID | the local computer name | The name of the workstation connecting to SQL Server. |
Equivalents
Integrated Security=SSPI equals Trusted_Connection=yes
Equivalents
MultipleActiveResultSets=true equals MARS_Connection=yes
Using MARS with SQL Native Client, by Chris Lee >>
Why is the "Database" parameter needed? Answer: If the database was previously attached, SQL Server does not reattach it (it uses the attached database as the default for the connection).
Download the SQL Native Client here >> (the package contains booth the ODBC driver and the OLE DB provider)
Using SQL Server 2005 Express? Don't miss the server name syntax: SERVERNAME\SQLEXPRESS (Substitute "SERVERNAME" with the name of the computer)
Equivalents
Integrated Security=SSPI equals Trusted_Connection=yes
Equivalents
MarsConn=yes equals MultipleActiveResultSets=true equals MARS_Connection=yes
Using MARS with SQL Native Client, by Chris Lee >>
Why is the "Database" parameter needed? Answer: If the database was previously attached, SQL Server does not reattach it (it uses the attached database as the default for the connection).
Download the SQL Native Client here >> (the package contains booth the ODBC driver and the OLE DB provider)
Using SQL Server 2005 Express? Don't miss the server name syntax: SERVERNAME\SQLEXPRESS (Substitute "SERVERNAME" with the name of the computer)
(use serverName\instanceName as Data Source to use an specifik SQLServer instance)
(DBMSSOCN=TCP/IP instead of Named Pipes, at the end of the Data Source is the port to use (1433 is the default))
Note! Use ADO.NET 2.0 for MARS functionality. MARS is not supported in ADO.NET 1.0 nor ADO.NET 1.1
Streamline your Data Connections by Moving to MARS, by Laurence Moroney, DevX.com >>
Why is the "Database" parameter needed? Answer: If the database was previously attached, SQL Server does not reattach it (it uses the attached database as the default for the connection).
The "User Instance" functionality creates a new SQL Server instance on the fly during connect. This works only on a local SQL Server 2005 instance and only when connecting using windows authentication over local named pipes. The purpose is to be able to create a full rights SQL Server instance to a user with limited administrative rights on the computer. To enable the functionality: sp_configure 'user instances enabled','1' (0 to disable)
Using SQL Server 2005 Express? Don't miss the server name syntax: SERVERNAME\SQLEXPRESS (Substitute "SERVERNAME" with the name of the computer)
The context connection lets you execute Transact-SQL statements in the same context (connection) that your code was invoked in the first place.
For more details on the differences between MDAC and SQL Native Client, read this msdn article >>
This one's from Microsoft, the following are from Oracle
This one works only with Oracle 8i release 3 or later
This one works only with Oracle 8i release 3 or later
C#:
using System.Data.OracleClient;
OracleConnection oOracleConn = new OracleConnection();
oOracleConn.ConnectionString = "my connection string";
oOracleConn.Open();
VB.NET:
Imports System.Data.OracleClient
Dim oOracleConn As OracleConnection = New OracleConnection()
oOracleConn.ConnectionString = "my connection string"
oOracleConn.Open()
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
Read more at Core Lab and the product page.
Want to learn data shaping? Check out 4GuyfFromRolla's great article about Data Shaping >>
Download the driver at MySQL Developer Zone.
Default port is 3306. Enter value -1 to use a named pipe connection.
C#:
using MySql.Data.MySqlClient;
MySqlConnection oMySqlConn = new MySqlConnection();
oMySqlConn.ConnectionString = "Server=Server;Database=Test;Uid=UserName;Pwd=asdasd;";
oMySqlConn.Open();
VB.NET:
Imports MySql.Data.MySqlClient
Dim oMySqlConn As MySqlConnection = New MySqlConnection()
oMySqlConn.ConnectionString = "Server=Server;Database=Test;Uid=UserName;Pwd=asdasd;"
oMySqlConn.Open()
This one is used with eInfoDesigns dbProvider, an add-on to .NET
C#:
using eInfoDesigns.dbProvider.MySqlClient;
MySqlConnection oMySqlConn = new MySqlConnection();
oMySqlConn.ConnectionString = "my connection string";
oMySqlConn.Open();
VB.NET:
Imports eInfoDesigns.dbProvider.MySqlClient
Dim oMySqlConn As MySqlConnection = New MySqlConnection()
oMySqlConn.ConnectionString = "my connection string"
oMySqlConn.Open()
This is a freeware ADO.Net data provider from SevenObjects
Read more at Core Lab and the product page.
Read more about this driver: Easysoft ODBC-Interbase driver >>
This driver are provided by DataDirect Technologies >> (formerly Intersolv)
Read more about SIBPROvider >>
For more information check out the Adaptive Server Enterprise Document Sets
Note! The two double quota following the DSN parameter at the end are escaped quotas (VB syntax), you may have to change this to your language specific escape syntax. The empty DSN parameter is indeed critical as not including it will result in error 7778.
Read more in the Sybase SQL Anywhere User Guide (see part 3, chapter 13) >>
Read more in the ASA User Guide (part 1, chapter 2) >>
Note that you must create a Data Source .IDS file using the Sybase Data Administrator. These .IDS files resemble ODBC DSNs.
This one works only from Open Client 12.5 where the server port number feature works,?allowing fully qualified connection strings to be used without defining?any .IDS Data Source files.
C#:
using Sybase.Data.AseClient;
AseConnection oCon = new AseConnection();
oCon.ConnectionString="my connection string";
oCon.Open();
VB.NET:
Imports System.Data.AseClient
Dim oCon As AseConnection = New AseConnection()
oCon.ConnectionString="my connection string"
oCon.Open()
Read more! Adaptive Server Enterprise ADO.NET Data Provider Documentation >>
Read more at Core Lab and the product page.
Read more in the Npgsql: User's Manual and on the pgFoundry website.
MS kb-article: How to use Paradox data with Access and Jet >>
IBPhoenix ODBC; More info, download etc >>
Firebird ADO.NET project >>
Firebird ADO.NET downloads >>
TIP! SQL syntax: "SELECT * FROM [sheet1$]" - i.e. worksheet name followed by a "$" and wrapped in "[" "]" brackets.
"HDR=Yes;" indicates that the first row contains columnnames, not data
"IMEX=1;" tells the driver to always read "intermixed" data columns as text
TIP! SQL syntax: "SELECT * FROM [sheet1$]" - i.e. worksheet name followed by a "$" and wrapped in "[" "]" brackets.
"HDR=Yes;" indicates that the first row contains columnnames, not data
Where MY_SYSTEM_NAME is the name given to the system connection in OperationsNavigator
Where MY_SYSTEM_NAME is the name given to the System Connection, and MY_LIBRARY is the name given to the library in iSeries Navigator.
Specify store in the connection open command like this: conn.open "http://servername/mypublicstore"
Check out this article at msdn >> and this one at Addison-Wesley >>
Read more (Microsoft msdn) >>
"Collate=Machine" is the default setting, for other settings check the list of supported collating sequences >>
Pervasive ODBC info >>
Pervasive OLE DB info >>
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