914: Nesting Namespaces within Each Other in Visual C#.NET

Generator QR in Visual C#.NET 914: Nesting Namespaces within Each Other
Listing 914: Nesting Namespaces within Each Other
Generate QR In Visual C#
Using Barcode generation for Visual Studio .NET Control to generate, create QR Code image in .NET applications.
// Define the namespace AddisonWesley namespace AddisonWesley { // Define the namespace AddisonWesleyMichaelis namespace Michaelis { // Define the namespace // AddisonWesleyMichaelisEssentialCSharp namespace EssentialCSharp { // Declare the class // AddisonWesleyMichaelisEssentialCSharpProgram class Program { // } } } } // End of AddisonWesley namespace declaration
Create Bar Code In Visual C#.NET
Using Barcode maker for VS .NET Control to generate, create barcode image in .NET applications.
Such a nesting will assign the Program class to the AddisonWesleyMichaelis EssentialCSharp namespace The second way is to use the full namespace in a single namespace declaration in which a period separates each identifier, as shown in Listing 915
Create QR Code 2d Barcode In VS .NET
Using Barcode creator for ASP.NET Control to generate, create QR Code image in ASP.NET applications.
Listing 915: Nesting Namespaces Using a Period to Separate Each Identifier
Create QR Code In .NET
Using Barcode generation for .NET framework Control to generate, create QR-Code image in Visual Studio .NET applications.
// Define the namespace AddisonWesleyMichaelisEssentialCSharp namespace AddisonWesleyMichaelisEssentialCSharp { class Program { // } } // End of AddisonWesley namespace declaration
Paint QR Code ISO/IEC18004 In Visual Basic .NET
Using Barcode encoder for VS .NET Control to generate, create Denso QR Bar Code image in Visual Studio .NET applications.
9: Well-Formed Types
Printing Bar Code In Visual C#
Using Barcode printer for .NET Control to generate, create bar code image in .NET applications.
Regardless of whether a namespace declaration follows Listing 914, Listing 915, or a combination of the two, the resultant CIL code will be identical The same namespace may occur multiple times, in multiple files, and even across assemblies For example, with the convention of one-toone correlation between files and classes, you can define each class in its own file and surround it with the appropriate namespace declaration
Printing Barcode In Visual C#.NET
Using Barcode creation for .NET framework Control to generate, create barcode image in Visual Studio .NET applications.
Namespace Alias Qualifier Namespaces on their own deal with the vast majority of naming conflicts that might arise However, sometimes (albeit rarely) conflict can arise because of an overlap in the namespace and class names To account for this, the C# 20 compiler includes an option for providing an alias with the /reference option For example, if the assemblies CoordinatesPlusdll and Coordinatesdll have an overlapping type of Arc, you can reference both assemblies on the command line by assigning one or both references with a namespace alias qualifier that further distinguishes one class from the other The results of such a reference appear in Output 97
Making Code39 In C#.NET
Using Barcode maker for Visual Studio .NET Control to generate, create Code 3 of 9 image in .NET framework applications.
OUTPUT 97:
Code 128C Maker In C#.NET
Using Barcode creation for .NET Control to generate, create Code 128 image in Visual Studio .NET applications.
cscexe /R:CoordPlus=CoordinatesPlusdll /R:Coordinatesdll Programcs
Making DataMatrix In Visual C#.NET
Using Barcode generator for Visual Studio .NET Control to generate, create ECC200 image in .NET framework applications.
However, adding the alias during compilation is not sufficient on its own In order to refer to classes in the aliased assembly, it is necessary to provide an extern directive that declares that the namespace alias qualifier is provided externally to the source code (see Listing 916)
USS-128 Generator In .NET Framework
Using Barcode drawer for Visual Studio .NET Control to generate, create GS1 128 image in Visual Studio .NET applications.
Listing 916: Using the extern Alias Directive
Code-39 Generator In VB.NET
Using Barcode generator for .NET framework Control to generate, create Code 39 image in VS .NET applications.
// extern must precede all other namespace elements extern alias CoordPlus; using System; using CoordPlus ::AddisonWesleyMichaelisEssentialCSharp // Equivalent also allowed // using CoordPlus AddisonWesleyMichaelisEssentialCSharp using global ::AddisonWesleyMichaelisEssentialCSharp
Drawing Bar Code In Java
Using Barcode creator for Java Control to generate, create barcode image in Java applications.
XML Comments
Bar Code Drawer In Visual Studio .NET
Using Barcode encoder for ASP.NET Control to generate, create bar code image in ASP.NET applications.
// Equivalent NOT allowed // using globalAddisonWesleyMichaelisEssentialCSharp public class Program { // }
Encoding Code128 In VS .NET
Using Barcode creator for Visual Studio .NET Control to generate, create Code-128 image in VS .NET applications.
Once the extern alias for CoordPlus appears, you can reference the namespace using CoordPlus, followed by either two colons or a period To ensure that the lookup for the type occurs in the global namespace, C# 20 allows items to have the global:: qualifier (but not global because it could imaginably conflict with a real namespace of global)
Making USS Code 128 In Java
Using Barcode generator for Java Control to generate, create Code 128 image in Java applications.
XML Comments
Painting Barcode In Visual Studio .NET
Using Barcode printer for Visual Studio .NET Control to generate, create bar code image in VS .NET applications.
1 introduced comments However, you can use XML comments for more than just notes to other programmers reviewing the source code XML-based comments follow a practice popularized with Java Although the C# compiler ignores all comments as far as the resultant executable goes, the developer can use command-line options to instruct the compiler2 to extract the XML comments into a separate XML file By taking advantage of the XML file generation, the developer can generate documentation of the API from the XML comments In addition, C# editors can parse the XML comments in the code and display them to developers as distinct regions (for example, as a different color from the rest of the code), or parse the XML comment data elements and display them to the developer Figure 92 demonstrates how an IDE can take advantage of XML comments to assist the developer with a tip about the code he is trying to write
Painting Bar Code In VS .NET
Using Barcode generation for Visual Studio .NET Control to generate, create barcode image in .NET applications.
2 The C# standard does not specify whether the C# compiler or a separate utility takes care of extracting the XML data However, all mainstream C# compilers include the functionality via a compile switch instead of within an additional utility
EAN-13 Generation In Visual Studio .NET
Using Barcode printer for .NET Control to generate, create GTIN - 13 image in Visual Studio .NET applications.
GTIN - 12 Creation In VS .NET
Using Barcode creator for ASP.NET Control to generate, create UCC - 12 image in ASP.NET applications.