qr code c# .net The Contact class in Visual C#.NET

Printing QR-Code in Visual C#.NET The Contact class

Listing 5.1 The Contact class
QR Code ISO/IEC18004 Creator In Visual C#
Using Barcode maker for .NET Control to generate, create QR-Code image in .NET applications.
www.OnBarcode.com
Scanning QR Code 2d Barcode In C#.NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
'VB.NET Imports System.EnterpriseServices Imports System.Data.SqlClient <Transaction(TransactionOption.Required)> _ Public Class Contact Inherits ServicedComponent End Class //C# using using using using
Painting Linear In Visual C#
Using Barcode maker for Visual Studio .NET Control to generate, create Linear Barcode image in .NET applications.
www.OnBarcode.com
Barcode Generator In Visual C#.NET
Using Barcode drawer for .NET framework Control to generate, create Barcode image in .NET framework applications.
www.OnBarcode.com
System; System.Data; System.EnterpriseServices; System.Data.SqlClient;
Matrix Barcode Generation In C#.NET
Using Barcode creator for VS .NET Control to generate, create Matrix 2D Barcode image in .NET framework applications.
www.OnBarcode.com
PDF417 Generation In C#.NET
Using Barcode drawer for VS .NET Control to generate, create PDF 417 image in Visual Studio .NET applications.
www.OnBarcode.com
[Transaction(TransactionOption.Required)] public class Contact : ServicedComponent { }
Generating Code128 In C#.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create Code 128C image in Visual Studio .NET applications.
www.OnBarcode.com
Code 9/3 Creation In Visual C#
Using Barcode generator for Visual Studio .NET Control to generate, create USS-93 image in Visual Studio .NET applications.
www.OnBarcode.com
COMPONENT SERVICES ARCHITECTURE
Printing QR Code ISO/IEC18004 In Java
Using Barcode generator for Java Control to generate, create QR Code JIS X 0510 image in Java applications.
www.OnBarcode.com
Create QR Code ISO/IEC18004 In None
Using Barcode creator for Office Word Control to generate, create QR Code JIS X 0510 image in Office Word applications.
www.OnBarcode.com
In listing 5.1, notice that we are importing System.EnterpriseServices and System.Data.SqlClient. As expressed in the TransactionAttribute, this class requires a transaction when the object instance is activated by COM+. It is important to note that if you do require a transaction in your class, you should either commit or roll back the transaction in each method of your class. Failing to do this could yield unexpected results. Next, before you start coding any methods in your class, you should configure your AssemblyInfo file so that it will expose your application as a COM+ component. As listing 5.2 illustrates, you must add several lines to this file. First, make sure that your component has a GUID associated with it (this element is included by default in VB.NET; however, you need to manually add it if you are using C#). The GUID is required because when you register your component in COM+ a type library file is generated, which requires a GUID to uniquely identify your component to COM+. If you must create a GUID for your component, Visual Studio .NET has a utility that generates GUIDs for you. From within Visual Studio .NET, select Create Guid from the Tools menu. The resulting dialog box generates GUIDs for your applications. Note that your component expects the GUID to be in the Registry.
Barcode Recognizer In C#
Using Barcode recognizer for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
UPCA Generator In None
Using Barcode maker for Excel Control to generate, create GS1 - 12 image in Microsoft Excel applications.
www.OnBarcode.com
Listing 5.2 AssemblyInfo.vb and AssemblyInfo.cs
Read PDF417 In .NET Framework
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Barcode Generator In VS .NET
Using Barcode creation for .NET framework Control to generate, create Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
'VB.NET Imports System.Reflection Imports System.Runtime.InteropServices Imports System.EnterpriseServices <Assembly: AssemblyTitle("BusLayer")> <Assembly: AssemblyDescription("Business layer of the " _ & "ContactMgr web application")> 'The following GUID is for the ID of the typelib if this project is exposed 'to COM <Assembly: Guid("6FF77718-7CB4-433D-88CB-D041306BD0FA")> <Assembly: AssemblyVersion("1.0.*")> <Assembly: AssemblyKeyFile("../../BusLayer.snk")> <Assembly: ApplicationName("ContactMgrBusLayer")> <Assembly: Description("This component is responsible " _ & "for handling all " & _ "operations related to a contact. ")> <Assembly: ApplicationActivation(ActivationOption.Server)> //C# using using using using
Barcode Generator In .NET
Using Barcode generation for .NET Control to generate, create Barcode image in .NET applications.
www.OnBarcode.com
Code 128 Code Set C Encoder In None
Using Barcode maker for Font Control to generate, create USS Code 128 image in Font applications.
www.OnBarcode.com
System; System.Reflection; System.Runtime.InteropServices; System.EnterpriseServices;
PDF417 Reader In Visual C#.NET
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Make Code128 In Objective-C
Using Barcode printer for iPhone Control to generate, create Code 128 Code Set A image in iPhone applications.
www.OnBarcode.com
[assembly: AssemblyTitle("BusLayer")] [assembly: AssemblyDescription("Business layer of the ContactMgr web application")]
UCC - 12 Generator In Java
Using Barcode creation for Java Control to generate, create GS1 - 12 image in Java applications.
www.OnBarcode.com
Generate QR In Java
Using Barcode generator for Android Control to generate, create Quick Response Code image in Android applications.
www.OnBarcode.com
CREATING A COM+ COMPONENT
//The following GUID is for the ID of the typelib if this project is exposed to COM [assembly: Guid("6FF77718-7CB4-433D-88CB-D041306BD0FA")] [assembly: AssemblyVersion("1.0.*")] [assembly: AssemblyKeyFile("../../BusLayer.snk")] [assembly: ApplicationName("ContactMgrBusLayer")] [assembly: Description("This component is responsible for handling all" + "operations related to a contact.")] [assembly: ApplicationActivation(ActivationOption.Server)]
Next, every .NET component that you want to register in COM+ must have a strong name. You can generate a strong name by using the utility SN.EXE, which is included with the .NET Framework SDK. As figure 5.10 shows, a strong name is generated for the application and stored in the file BusLayer.snk. In addition, you must provide an application name for your component. This refers to the COM+ application that your component will be installed to. You specify the name using the ApplicationName attribute. This attribute can reference either an existing application or a new application that is created when you install your component. For our example, create an application called ContactMgrBusinessLayer. Specifying the ApplicationName attribute inside your AssemblyInfo file applies it to all classes in your project; however, you can apply it to each class in your project if you prefer. Finally, you must specify the ApplicationActivation attribute. This attribute specifies whether COM+ will execute your component as a server application or as a library application. Create a server application for this example.
NOTE
If you create a server application, you must register this assembly and any dependent assemblies in the Global Assembly Cache (GAC) or you will get an exception when you try to create an instance of your class. Also, any parameters for your component must be marked as serializable.
Copyright © OnBarcode.com . All rights reserved.