pdf417 c# FRAMEWORK DE SIGN in C#.NET

Draw PDF-417 2d barcode in C#.NET FRAMEWORK DE SIGN

CHAPTER 2 FRAMEWORK DE SIGN
PDF 417 Creator In Visual C#.NET
Using Barcode creator for .NET Control to generate, create PDF-417 2d barcode image in .NET framework applications.
www.OnBarcode.com
PDF417 Decoder In Visual C#
Using Barcode reader for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
server. It is then executed on the server through the data portal. Unlike other objects, however, command objects implement a special execute method: DataPortal_Execute() The optional pre-, post-, and exception data portal methods can also be implemented if desired. But the DataPortal_Execute() method is the important one, since that is where the business developer writes the code to implement the non-interactive back-end processing. I make use of CommandBase in 17 when implementing the sample application objects.
PDF-417 2d Barcode Encoder In Visual C#.NET
Using Barcode generation for Visual Studio .NET Control to generate, create PDF-417 2d barcode image in Visual Studio .NET applications.
www.OnBarcode.com
UCC-128 Printer In C#.NET
Using Barcode maker for .NET framework Control to generate, create GTIN - 128 image in .NET applications.
www.OnBarcode.com
Read-Only Root and Child
UPC-A Creator In Visual C#.NET
Using Barcode printer for VS .NET Control to generate, create UPC-A Supplement 5 image in .NET applications.
www.OnBarcode.com
Barcode Maker In C#.NET
Using Barcode creation for .NET Control to generate, create Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Sometimes applications don t want to expose an editable object. Many applications have objects that are read-only or display-only. Read-only objects need to support object persistence only for retrieving data, not for updating data. Also, they don t need to support any of the n-level undo or other editing-type behaviors because they re created with read-only properties. For editable objects, there s BusinessBase, which has a property that can be set to indicate whether it s a parent or child object. The same base supports both types of objects, allowing dynamic switching between parent and child at runtime. Making an object read-only or read-write is a bigger decision because it impacts the interface of the object. A read-only object should only include read-only properties as part of its interface, and that isn t something you can toggle on or off at runtime. You can make objects read-only, and consequently more specialized and with less overhead, by implementing a specific base class. The ReadOnlyBase class is used to create read-only objects, as follows: [Serializable] public class StaticContent : ReadOnlyBase<StaticContent> { } Classes shouldn t implement any read-write properties. If this were to happen, it would be entirely up to the code in the object to handle any undo, persistence, or other features for dealing with the changed data. If an object has editable properties, it should subclass from BusinessBase. Read-only objects include authorization rules so the object can control which users can view each property. Obviously they don t implement business or validation rules because such rules are only invoked when a property changes, and that won t happen with read-only properties.
Making Code 128 In C#.NET
Using Barcode encoder for Visual Studio .NET Control to generate, create Code 128 image in .NET applications.
www.OnBarcode.com
ITF14 Creator In C#.NET
Using Barcode encoder for .NET framework Control to generate, create GTIN - 14 image in .NET framework applications.
www.OnBarcode.com
ReadOnly Root and Child List
Encoding PDF 417 In None
Using Barcode maker for Font Control to generate, create PDF-417 2d barcode image in Font applications.
www.OnBarcode.com
Reading PDF 417 In Visual C#
Using Barcode reader for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Not only do applications sometimes need read-only business objects, they also commonly require immutable collections of objects. The ReadOnlyListBase class lets you create strongly typed collections of objects, whereby the object and collection are both read-only: [Serializable] public class StaticList : ReadOnlyListBase<StaticList, ChildType> { } As with ReadOnlyBase, this object supports only the retrieval of data. It has no provision for updating data or handling changes to its data. While the child objects in such a collection may inherit from ReadOnlyBase, they don t have to. More commonly, the child objects in a read-only collection are just simple .NET objects that merely expose read-only properties.
UCC - 12 Generator In None
Using Barcode drawer for Office Word Control to generate, create UPC-A Supplement 5 image in Office Word applications.
www.OnBarcode.com
Printing Code 3 Of 9 In Objective-C
Using Barcode creation for iPad Control to generate, create Code 3/9 image in iPad applications.
www.OnBarcode.com
C HAPTE R 2 FRA MEWORK DES IGN
Barcode Printer In None
Using Barcode maker for Online Control to generate, create Barcode image in Online applications.
www.OnBarcode.com
Creating Code128 In Visual Basic .NET
Using Barcode drawer for .NET framework Control to generate, create USS Code 128 image in VS .NET applications.
www.OnBarcode.com
Name/Value List
Painting Barcode In Java
Using Barcode maker for BIRT Control to generate, create Barcode image in Eclipse BIRT applications.
www.OnBarcode.com
Print 1D In Java
Using Barcode creation for Java Control to generate, create 1D Barcode image in Java applications.
www.OnBarcode.com
The NameValueListBase class is designed specifically to support the idea of lookup tables or lists of read-only key/value data such as categories, customer types, product types, and so forth. The goal of this class is to simplify the process of retrieving such data and displaying it in common controls such as drop-down lists, combo boxes, and other list controls. The following shows the beginnings of a custom name/value list: [Serializable] public class CodeList : NameValueListBase<int, string> { } While the business developer does need to create a specific class for each type of name/value data, inheriting from this base class largely trivializes the process. There are a couple similar types in the System.Collections.Specialized namespace: NameObjectCollectionBase and NameValueCollection. These types don t automatically integrate with the rest of the CSLA .NET framework for tasks such as object persistence and don t fully support data binding.
Make ANSI/AIM Code 128 In None
Using Barcode generation for Office Word Control to generate, create Code 128B image in Microsoft Word applications.
www.OnBarcode.com
GS1 - 12 Reader In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
N-Level Undo Functionality
Read QR Code In .NET
Using Barcode scanner for .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Drawing PDF 417 In Visual Studio .NET
Using Barcode generator for Reporting Service Control to generate, create PDF417 image in Reporting Service applications.
www.OnBarcode.com
The implementation of n-level undo functionality is quite complex and involves heavy use of reflection. Fortunately, you can use inheritance to place the implementation in a base class so that no business object needs to worry about the undo code. In fact, to keep things cleaner, this code is in its own base class, separate from any other business object behaviors, as shown in Figure 2-11.
Copyright © OnBarcode.com . All rights reserved.