create pdf417 barcode in c# CH A PT ER 7 PRO PERTY DE CLA RAT IO NS in Visual C#

Generator PDF417 in Visual C# CH A PT ER 7 PRO PERTY DE CLA RAT IO NS

CH A PT ER 7 PRO PERTY DE CLA RAT IO NS
Generating PDF 417 In C#
Using Barcode drawer for .NET framework Control to generate, create PDF 417 image in .NET framework applications.
www.OnBarcode.com
Recognizing PDF 417 In Visual C#
Using Barcode reader for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
may or may not be an exact match for the type of the field, which is why it is so important that the SetFieldData() method call CoerceValue() to convert the value to the right type. At this point, you should have an understanding of how managed backing fields are implemented, including their storage in IFieldData objects, which are managed by the FieldDataManager and consumed in BusinessBase and ReadOnlyBase.
Make UCC - 12 In C#.NET
Using Barcode creation for Visual Studio .NET Control to generate, create EAN 128 image in .NET framework applications.
www.OnBarcode.com
Linear Encoder In Visual C#
Using Barcode creation for VS .NET Control to generate, create Linear 1D Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Conclusion
Paint ECC200 In C#
Using Barcode generation for .NET framework Control to generate, create Data Matrix image in .NET framework applications.
www.OnBarcode.com
Encoding GS1 - 12 In Visual C#
Using Barcode creator for Visual Studio .NET Control to generate, create UPC A image in .NET framework applications.
www.OnBarcode.com
In this chapter, I discussed the options available for declaring and working with properties on your editable and read-only business objects. You should now understand how the framework handles both private backing fields and managed backing fields. s 8 16 will continue the implementation discussion by providing more detail about the implementation of each major framework feature. From 17 on, the focus will be on building the simple business application designed in 3, to illustrate how you can use the classes in the framework to build applications based on business objects.
Print Barcode In C#
Using Barcode encoder for Visual Studio .NET Control to generate, create Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
USPS Intelligent Mail Encoder In C#
Using Barcode generation for .NET framework Control to generate, create OneCode image in Visual Studio .NET applications.
www.OnBarcode.com
Object Status Management
PDF-417 2d Barcode Maker In VB.NET
Using Barcode generator for .NET Control to generate, create PDF 417 image in .NET framework applications.
www.OnBarcode.com
Generating PDF 417 In Java
Using Barcode generator for Android Control to generate, create PDF 417 image in Android applications.
www.OnBarcode.com
he next topic I want to discuss in the implementation of CSLA .NET is how editable objects manage status information. Editable business objects maintain a set of consistent status information. Management of these values is mostly automated by BusinessBase, BusinessListBase, and the data portal.
Data Matrix 2d Barcode Scanner In Visual C#
Using Barcode recognizer for .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Code 128 Code Set A Reader In VS .NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Object Status Properties
Barcode Creation In VS .NET
Using Barcode creation for ASP.NET Control to generate, create Barcode image in ASP.NET applications.
www.OnBarcode.com
Code 128 Code Set B Maker In VS .NET
Using Barcode encoder for Reporting Service Control to generate, create Code 128 Code Set A image in Reporting Service applications.
www.OnBarcode.com
All editable business objects should keep track of whether the object has just been created, whether its data has been changed, or whether it has been marked for deletion. Using the validation rules functionality, the object can also keep track of whether it s valid. Table 8-1 lists the object status properties in BusinessBase and BusinessListBase.
EAN13 Creation In None
Using Barcode creator for Font Control to generate, create EAN-13 Supplement 5 image in Font applications.
www.OnBarcode.com
Draw Code 128C In Objective-C
Using Barcode creation for iPhone Control to generate, create Code 128 Code Set A image in iPhone applications.
www.OnBarcode.com
Table 8-1. Object Status Properties
Scanning QR Code JIS X 0510 In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Data Matrix Drawer In None
Using Barcode generation for Font Control to generate, create Data Matrix image in Font applications.
www.OnBarcode.com
Property
GS1 - 13 Encoder In Java
Using Barcode creator for Java Control to generate, create GS1 - 13 image in Java applications.
www.OnBarcode.com
Encoding European Article Number 13 In Objective-C
Using Barcode creator for iPhone Control to generate, create EAN13 image in iPhone applications.
www.OnBarcode.com
IsNew IsSelfDirty IsDirty IsSelfValid IsValid IsSavable
Description
Indicates whether the object s primary identifying value in memory corresponds to a primary key in a database if not, the object is new Indicates whether the object s data in memory is known to be different from data in the database if different, the object is dirty Indicates whether the object itself has been changed, or if any of its child objects have been changed Indicates whether the object currently has any broken validation rules if so, the object is not valid Indicates whether the object itself is valid, and whether all its child objects are also valid Indicates whether the object can be saved by combining IsValid, IsDirty, authorization, and edit level, and whether there are any outstanding async validation rules running Indicates whether the object is marked for deletion
IsDeleted
CHAPTER 8 OBJECT S TA TUS MA NAGE MENT
ITrackStatus Interface
In 6 I briefly discussed the ITrackStatus interface from the Csla.Core namespace. This interface is implemented by BusinessBase and BusinessListBase, allowing your code to gain access to the object status values without worrying about the specific object type: public { bool bool bool bool bool bool bool } interface ITrackStatus IsValid { get; } IsSelfValid { get; } IsDirty { get; } IsSelfDirty { get; } IsDeleted { get; } IsNew { get; } IsSavable { get; }
This interface is used within CSLA .NET itself, but is also available to business object and UI framework authors. I will now discuss the concepts behind an object being new, dirty, valid, and marked for deletion.
IsNew
When an object is new, it means that the object exists in memory but not in the database or other persistent store. If the object s data resides in the database, the object is considered to be old. I typically think of it this way: if the primary key value in the object corresponds to an existing primary key value in the database, the object is old; otherwise it is new. The value behind the IsNew property is stored in an _isNew field. When an object is first created, this value defaults to the object being new: private bool _isNew = true; The IsNew property simply exposes this value: [Browsable(false)] public bool IsNew { get { return _isNew; } } The property is adorned with the Browsable attribute from the System.ComponentModel namespace. This attribute tells data binding not to automatically bind this property. Without this attribute, data binding would automatically display this property in grids and on forms, and typically, this property shouldn t be displayed. This attribute is used on other properties in BusinessBase as well.
Copyright © OnBarcode.com . All rights reserved.