Derives from Profile in VS .NET

Printer Code 128A in VS .NET Derives from Profile

Derives from Profile
USS Code 128 Generation In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create Code 128C image in ASP.NET applications.
www.OnBarcode.com
Barcode Drawer In Visual Studio .NET
Using Barcode drawer for ASP.NET Control to generate, create Barcode image in ASP.NET applications.
www.OnBarcode.com
C D E
Creating Code-128 In VS .NET
Using Barcode encoder for ASP.NET Control to generate, create Code 128 Code Set C image in ASP.NET applications.
www.OnBarcode.com
Barcode Printer In VS .NET
Using Barcode generation for ASP.NET Control to generate, create Barcode image in ASP.NET applications.
www.OnBarcode.com
Applies global formatter
Print PDF 417 In .NET Framework
Using Barcode maker for ASP.NET Control to generate, create PDF 417 image in ASP.NET applications.
www.OnBarcode.com
UPC-A Creation In Visual Studio .NET
Using Barcode generator for ASP.NET Control to generate, create GTIN - 12 image in ASP.NET applications.
www.OnBarcode.com
Applies formatter for source type Applies inline formatting for source type
Generating Data Matrix 2d Barcode In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create Data Matrix image in ASP.NET applications.
www.OnBarcode.com
ISBN - 10 Maker In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create Bookland EAN image in ASP.NET applications.
www.OnBarcode.com
CreateMap<Customer, CustomerInfo>() .ForMember(x => x.ShippingAddress, opt =>
excel code 128 barcode add in
Using Barcode creator for Office Excel Control to generate, create Code 128 image in Excel applications. barcode fonts for excel excel code 128 barcode add in
www.OnBarcode.com
Drawing Code 128 In Java
Using Barcode creation for Android Control to generate, create Code128 image in Android applications.
www.OnBarcode.com
Mapping with AutoMapper
Barcode Creation In C#
Using Barcode creation for Visual Studio .NET Control to generate, create Barcode image in VS .NET applications.
www.OnBarcode.com
Drawing EAN 128 In None
Using Barcode drawer for Software Control to generate, create EAN / UCC - 13 image in Software applications.
www.OnBarcode.com
opt.AddFormatter<AddressFormatter>(); opt.SkipFormatter<HtmlEncoderFormatter>(); }); } }
Paint EAN 128 In None
Using Barcode creator for Microsoft Word Control to generate, create EAN / UCC - 13 image in Office Word applications.
www.OnBarcode.com
Print Barcode In .NET Framework
Using Barcode drawer for Reporting Service Control to generate, create Barcode image in Reporting Service applications.
www.OnBarcode.com
Let s investigate this profile piece by piece. First, each profile must derive from Profile and choose a unique ProfileName B. The Configure method contains the configuration declarations. The first directive is AddFormatter<HtmlEncoderFormatter>() C. This is a global instruction to AutoMapper, telling it to apply HTML encoding to every destination member. A second formatting directive tells AutoMapper to use the NameFormatter whenever it s mapping from a Name object D (we ll investigate NameFormatter in depth later in this chapter). There s also a directive providing a special formatting expression that AutoMapper should use when it s attempting to map from decimal objects E. This expression will use the standard formatting string to display decimals as currency. Finally, the CreateMap directive tells AutoMapper to plan to map from Customer to CustomerInfo. The ForMember method call tells AutoMapper to apply the AddressFormatter but skip the HtmlEncoderFormatter when mapping to the ShippingAddress destination property. The rest of the CustomerInfo properties aren t specified, because they re mapped conventionally.
ean 13 excel free download
Using Barcode generation for Microsoft Excel Control to generate, create EAN / UCC - 13 image in Microsoft Excel applications. ean 13 excel free download
www.OnBarcode.com
USS Code 39 Reader In Visual Basic .NET
Using Barcode scanner for .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
18.3.3 Sanity checking
Scanning GS1 - 13 In .NET Framework
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Making GS1 - 13 In Java
Using Barcode maker for Java Control to generate, create EAN-13 image in Java applications.
www.OnBarcode.com
A reliance on convention is a double-edged sword. On one hand, it helpfully eliminates the developer s obligation to specify each member s mapping. But there s a danger if a property is renamed. If a source member is renamed, it might no longer correspond to the appropriate destination member, and the convention would be broken. Developers need fast feedback when changes like this happen. It s not acceptable to experience a runtime error. AutoMapper provides a method that will ensure its configuration is valid, checking that each destination member is mapped to a source member by convention or configuration. Listing 18.9 shows a profile that won t work someone made a typographical error.
Scanning Barcode In VB.NET
Using Barcode Control SDK for Visual Studio .NET Control to generate, create, read, scan barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Barcode Reader In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
Listing 18.9 Examining a potentially dangerous typo
public class Destination { public string Name { get; set; } public string Typo { get; set; } } public class Source { public string Name { get; set; }
String should be named "Number"
AutoMapper basics
public int Number { get; set; } } public class BrokenProfile : Profile { protected override void Configure() { CreateMap<Source, Destination>(); } }
To protect against typos like this, we can run a special helper test as part of our automated test suite. This helper test, AutoMapperConfigurationTester, is shown in listing 18.10.
Listing 18.10 Asserting AutoMapper is configured correctly
[TestFixture] public class AutoMapperConfigurationTester { [Test] public void Should_map_everything() { AutoMapperConfiguration.Configure(); Mapper.AssertConfigurationIsValid(); } }
Tests mapping configuration
When this test is run against our broken profile in listing 18.10, we ll get a helpful message indicating that the Typo property isn t mapped.
18.3.4 Reducing repetitive formatting code
Earlier in this chapter we mentioned applying special formatters to member mappings. These formatters are all implementations of IValueFormatter, an AutoMapper interface that defines the contract between AutoMapper and our custom formatting code. Listing 18.11 shows this interface.
Listing 18.11 Examining the IValueFormatter interface
public interface IValueFormatter { string FormatValue(ResolutionContext context); }
Our custom formatting implementation will accept a ResolutionContext, which supplies the value of the view model property and other metadata. You can provide any transformation or mapping you deem necessary and simply return a string result. To make it easier on client developers, a simple base class can be implemented. Listing 18.12 shows BaseFormatter, which pulls the source value out of the context and checks for null values.
Mapping with AutoMapper
Listing 18.12 Implementing IValueFormatter on the BaseFormatter class
public abstract class BaseFormatter<T> : IValueFormatter { public string FormatValue(ResolutionContext context) { if (context.SourceValue == null) return null; Tries ToString
if wrong type if (!(context.SourceValue is T)) { object value = context.SourceValue; Returns return value == null result of string.Empty : value.ToString(); abstract } method
return FormatValueCore((T) context.SourceValue); } protected abstract string FormatValueCore(T value); }
Requires inheritors to override method
Deriving from BaseFormatter makes writing a custom formatter straightforward. All we need to do is implement its abstract FormatValueCore method, which receives the strongly typed source value. AutoMapper will catch any null reference exceptions in formatters or in regular mapping and instead return an empty string or the default value. Listing 18.13 shows the NameFormatter, which is discussed in section 18.3.2.
Copyright © OnBarcode.com . All rights reserved.