vb.net code to generate barcode 128 Connections in VB.NET

Encoder Code-128 in VB.NET Connections

Connections
Making Code 128A In Visual Basic .NET
Using Barcode generation for Visual Studio .NET Control to generate, create Code 128B image in .NET applications.
www.OnBarcode.com
Scan ANSI/AIM Code 128 In Visual Basic .NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
In both JDBC and ADO.NET, a connection to the underlying data source is represented by a Connection object, which provides the starting point for all subsequent interaction with the data source.
Barcode Creator In VB.NET
Using Barcode drawer for VS .NET Control to generate, create bar code image in .NET framework applications.
www.OnBarcode.com
Barcode Recognizer In Visual Basic .NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Creating and Opening Connections
Code-128 Generator In Visual C#.NET
Using Barcode creator for .NET Control to generate, create Code-128 image in .NET framework applications.
www.OnBarcode.com
Code 128 Code Set C Generator In .NET
Using Barcode creator for ASP.NET Control to generate, create Code 128 Code Set A image in ASP.NET applications.
www.OnBarcode.com
The IDbConnection interface is the ADO.NET equivalent of the JDBC Connection interface. An explicit instance of the JDBC Connection interface is obtained via the getConnection factory method of the java.sql.DriverManager or javax.sql.DataSource interface. IDbConnection instances are created using constructors; the programmer must explicitly instantiate the appropriate implementation for the underlying data source. The IDbConnection implementation classes accept a connection string as a constructor argument containing connection configuration parameters in the form of name/value pairs separated by semicolons, similar in nature to a JDBC URL. The connection string can be passed as an argument to the IDbConnection implementation class constructor or set via the ConnectionString property after construction. Invalid or missing values in the connection string cause a System.ArgumentException to be thrown.
Painting Code 128 Code Set B In .NET Framework
Using Barcode drawer for .NET Control to generate, create Code-128 image in .NET framework applications.
www.OnBarcode.com
UCC - 12 Maker In Visual Basic .NET
Using Barcode creator for .NET Control to generate, create USS-128 image in VS .NET applications.
www.OnBarcode.com
16. Database Connectivity
Bar Code Encoder In VB.NET
Using Barcode printer for VS .NET Control to generate, create bar code image in VS .NET applications.
www.OnBarcode.com
Creating Code 39 Full ASCII In VB.NET
Using Barcode printer for VS .NET Control to generate, create Code 3 of 9 image in .NET framework applications.
www.OnBarcode.com
Once the IDbConnection has been created, it's prepared for use by calling the Open method. This method should be called only once for each connection; repeated calls to the Open method cause a System.InvalidOperationException to be thrown. The state of a Connection can be determined using the IDbConnection.State property. State returns one of the following values from the System.Data.ConnectionState enumeration: Broken, Open, or Closed. The DBDemo.Connect method creates and opens an IDbConnection to a Microsoft SQL Server with the name contained in the sqlServerName field.
Painting Linear In VB.NET
Using Barcode maker for .NET Control to generate, create 1D image in VS .NET applications.
www.OnBarcode.com
Creating Royal Mail Barcode In VB.NET
Using Barcode generator for VS .NET Control to generate, create RM4SCC image in VS .NET applications.
www.OnBarcode.com
private void Connect() { // Create a connection to the specified SQL Server using // a database named MyDatabase and integrated Windows security string conStr = "Data Source=" + sqlServerName + " ; Database=MyDataBase;" + " Integrated Security=SSPI"; sqlCon = new SqlConnection(conStr); // Open the SQL Server Connection sqlCon.Open(); }
ECC200 Generator In .NET Framework
Using Barcode encoder for ASP.NET Control to generate, create Data Matrix 2d barcode image in ASP.NET applications.
www.OnBarcode.com
Printing Code-128 In Java
Using Barcode printer for BIRT reports Control to generate, create Code 128 Code Set A image in Eclipse BIRT applications.
www.OnBarcode.com
Table 16-3 contains a summary of the commonly used parameters for the SqlConnection class.
Generate Code 128A In None
Using Barcode creation for Online Control to generate, create Code 128 Code Set C image in Online applications.
www.OnBarcode.com
GS1 - 12 Generation In Java
Using Barcode creation for Android Control to generate, create GTIN - 12 image in Android applications.
www.OnBarcode.com
Table 16-3. Common SqlConnection Configuration Parameters
Data Matrix 2d Barcode Generation In Objective-C
Using Barcode creation for iPad Control to generate, create Data Matrix image in iPad applications.
www.OnBarcode.com
Code-39 Generation In Java
Using Barcode generation for Android Control to generate, create Code 39 Full ASCII image in Android applications.
www.OnBarcode.com
Parameter Application Name Connect Timeout Data Source
Encoding UPC-A In C#.NET
Using Barcode printer for .NET framework Control to generate, create GS1 - 12 image in Visual Studio .NET applications.
www.OnBarcode.com
Encode Barcode In .NET
Using Barcode maker for Reporting Service Control to generate, create barcode image in Reporting Service applications.
www.OnBarcode.com
Comments The application name to use for the connection. Defaults to .Net SqlClient Data Provider. The number of seconds the connection will try to connect to the data source before failing and generating an error. Defaults to 15 seconds. The name or address of the Microsoft SQL Server instance with which to connect. Database The name of the database to use. Integrated Determines whether the connection is secure. Valid values are true, false, and Security sspi, which is equivalent to true. Defaults to false. Packet Size Size in bytes of the network packets used to communicate with SQL Server. Defaults to 8192. Password The user password to use to connect to the SQL Server. User ID The user name to use to connect to the SQL Server. Workstation ID The workstation name to use for the connection. Defaults to the local computer name.
Connection Pooling
If implemented by the data source vendor, JDBC Connection instances obtained via the DataSource.getConnection method will be pooled, meaning that a small number of connections will be shared to service requests from a larger number of clients. All connections obtained through the .NET SQL and OLE Data Provider implementations are pooled by default. The native OLE DB implementation provides connection pooling for the
16. Database Connectivity
OLE Data Provider, and the SQL Provider implements pooling directly in the .NET classes; consult the .NET documentation for details of the pooling strategy. Table 16-4 summarizes the connection string parameters that can be used to specify the default connection pooling behavior of the SqlConnection class.
Table 16-4. SqlConnection Parameters for Connection Pooling
Property Connection Lifetime
Comments A connection is destroyed if it is older than this value in seconds when it is returned to the pool. The default value of 0 (zero) seconds prevents connections from being destroyed. If true, the connection is reset when taken from the pool; if false, it is not Connection reset, avoiding the additional communication with the server. Defaults to true. Reset Max Pool Size The maximum number of connections allowed in the pool. Defaults to 100. Min Pool Size The minimum number of connections allowed in the pool. Defaults to 0 (zero). When true, the new connection object is taken from or created in an Pooling appropriate pool; otherwise, the connection is created independent of pooling. Defaults to true.
Copyright © OnBarcode.com . All rights reserved.