c# code to generate barcode Continuity and the Windows Ecosystem in Visual C#

Drawing Denso QR Bar Code in Visual C# Continuity and the Windows Ecosystem

Continuity and the Windows Ecosystem
Quick Response Code Encoder In Visual C#
Using Barcode printer for .NET Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
www.OnBarcode.com
Decode QR-Code In C#.NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Software development platforms do not succeed purely on their own merits context matters. For example, widespread availability of third-party components and tools can make a platform significantly more compelling. Windows is perhaps the most striking example of this phenomenon. Any new programming system attempting to gain acceptance has a considerable advantage if it can plug into some existing ecosystem, and one of the biggest differences between C# and Java is that C# and the .NET Framework positively embrace the Windows platform, while Java goes out of its way to insulate developers from the underlying OS. If you re writing code to run on a specific operating system, it s not especially helpful for a language to cut you off from the tools and components unique to your chosen platform. Rather than requiring developers to break with the past, .NET offers continuity by making it possible to work directly with components and services either built into or built for Windows. Most of the time, you won t need to use this the class library provides wrappers for a lot of the underlying platform s functionality. However, if you need to use a third-party component or a feature of the operating system that doesn t yet have a .NET wrapper, the ability to work with such unmanaged features directly from managed code is invaluable.
Encode Barcode In Visual C#
Using Barcode creation for .NET Control to generate, create Barcode image in .NET framework applications.
www.OnBarcode.com
Barcode Encoder In Visual C#
Using Barcode generation for Visual Studio .NET Control to generate, create Barcode image in .NET framework applications.
www.OnBarcode.com
While .NET offers features to ease integration with the underlying platform, there is still support for non-Windows systems. Microsoft s Silverlight can run C# and VB.NET code on Mac OS X as well as Windows. There s an open source project called Mono which enables .NET code to run on Linux, and the related Moonlight project is an open source version of Silverlight. So the presence of local platform integration features doesn t stop C# from being useful on multiple platforms if you want to target multiple operating systems, you would just choose not to use any platform-specific features. So the biggest philosophical difference between C# and Java is that C# provides equal support for direct use of operating-system-specific features and for platform independence. Java makes the former disproportionately harder than the latter.
Create EAN-13 Supplement 5 In Visual C#.NET
Using Barcode generator for .NET framework Control to generate, create EAN-13 image in .NET framework applications.
www.OnBarcode.com
Code-128 Encoder In C#
Using Barcode generator for Visual Studio .NET Control to generate, create Code 128B image in .NET applications.
www.OnBarcode.com
The latest version of C# contains features that enhance this capability further. Several of the new C# 4.0 features make it easier to interact with Office and other Windows applications that use COM automation this was a weak spot in C# 3.0. The relative ease with which developers can reach outside the boundaries of managed code makes C# an attractive choice it offers all the benefits of managed execution, but retains the ability to work with any code in the Windows environment, managed or not.
UCC - 12 Maker In Visual C#.NET
Using Barcode generator for VS .NET Control to generate, create EAN / UCC - 14 image in VS .NET applications.
www.OnBarcode.com
Creating 2 Of 5 Industrial In Visual C#.NET
Using Barcode encoder for VS .NET Control to generate, create 2 of 5 Industrial image in VS .NET applications.
www.OnBarcode.com
C# 4.0, .NET 4, and Visual Studio 2010
QR Code JIS X 0510 Printer In Java
Using Barcode generator for Android Control to generate, create QR-Code image in Android applications.
www.OnBarcode.com
QR Code JIS X 0510 Generation In None
Using Barcode drawer for Software Control to generate, create QR Code image in Software applications.
www.OnBarcode.com
Since C# favors general-purpose language features designed to be composed with one another, it often doesn t make sense to describe individual new features on their own. So rather than devoting sections or whole chapters to new features, we cover them in context, integrated appropriately with other, older language features. The section you re reading right now is an exception, of course, and the main reason is that we expect people already familiar with C# 3.0 to browse through this book in bookstores looking for our coverage of the new features. If that s you, welcome to the book! If you look in the Preface you ll find a guide to what s where in the book, including a section just for you, describing where to find material about C# 4.0 features. That being said, a theme unites the new language features in version 4: they support dynamic programming, with a particular focus on making certain interoperability scenarios simpler. For example, consider the C# 3.0 code in Example 1-3 that uses part of the Office object model to read the Author property from a Word document.
GS1 DataBar Stacked Generator In Java
Using Barcode generation for Java Control to generate, create GS1 DataBar Expanded image in Java applications.
www.OnBarcode.com
Make Code 128 Code Set C In Java
Using Barcode drawer for Java Control to generate, create Code 128 Code Set B image in Java applications.
www.OnBarcode.com
static void Main(string[] args) { var wordApp = new Microsoft.Office.Interop.Word.Application(); object fileName = @"WordFile.docx"; object missing = System.Reflection.Missing.Value;
DataMatrix Drawer In .NET Framework
Using Barcode creator for Reporting Service Control to generate, create DataMatrix image in Reporting Service applications.
www.OnBarcode.com
Drawing QR Code 2d Barcode In None
Using Barcode generation for Font Control to generate, create QR Code JIS X 0510 image in Font applications.
www.OnBarcode.com
object readOnly = true; Microsoft.Office.Interop.Word._Document doc = wordApp.Documents.Open(ref fileName, ref missing, ref readOnly, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing); object docProperties = doc.BuiltInDocumentProperties; Type docPropType = docProperties.GetType(); object authorProp = docPropType.InvokeMember("Item", BindingFlags.Default | BindingFlags.GetProperty, null, docProperties, new object[] { "Author" }); Type propType = authorProp.GetType(); string authorName = propType.InvokeMember("Value", BindingFlags.Default |BindingFlags.GetProperty, null, authorProp, new object[] { }).ToString(); object saveChanges = false; doc.Close(ref saveChanges, ref missing, ref missing); Console.WriteLine(authorName);
Scanning Data Matrix ECC200 In Visual Basic .NET
Using Barcode recognizer for .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Drawing Data Matrix In None
Using Barcode printer for Online Control to generate, create ECC200 image in Online applications.
www.OnBarcode.com
}
Data Matrix ECC200 Creator In Java
Using Barcode generation for BIRT reports Control to generate, create ECC200 image in BIRT reports applications.
www.OnBarcode.com
Printing Denso QR Bar Code In Java
Using Barcode maker for Java Control to generate, create Denso QR Bar Code image in Java applications.
www.OnBarcode.com
That s some pretty horrible code it s hard to see what the example does because the goal is lost in the details. The reason it is so unpleasant is that Office s programming model is designed for dynamic languages that can fill in a lot of the details at runtime. C# 3.0 wasn t able to do this, so developers were forced to do all the work by hand. Example 1-4 shows how to do exactly the same job in C# 4.0. This is a lot easier to follow, because the code contains only the relevant details. It s easy to see the sequence of operations open the document, get its properties, retrieve the Author property s value, and close the document. C# 4.0 is now able to fill in all the details for us, thanks to its new dynamic language features.
Printing Barcode In Java
Using Barcode printer for Android Control to generate, create Barcode image in Android applications.
www.OnBarcode.com
Making Barcode In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create Barcode image in ASP.NET applications.
www.OnBarcode.com
static void Main(string[] args) { var wordApp = new Microsoft.Office.Interop.Word.Application(); Microsoft.Office.Interop.Word._Document doc = wordApp.Documents.Open("WordFile.docx", ReadOnly: true); dynamic docProperties = doc.BuiltInDocumentProperties; string authorName = docProperties["Author"].Value; doc.Close(SaveChanges: false); } Console.WriteLine(authorName);
This example uses a couple of C# 4.0 features: it uses the new dynamic keyword for runtime binding to members. It also uses the support for optional arguments. The Open and Close methods take 16 and 3 arguments, respectively, and as you can see from Example 1-3, you need to provide all of them in C# 3.0. But Example 1-4 has only provided values for the arguments it wants to set to something other than the default. Besides using these two new features, a project containing this code would usually be built using a third new interop feature called no-PIA. There s nothing to see in the preceding example, because when you enable no-PIA in a C# project, you do not need to modify your code no-PIA is essentially a deployment feature. In C# 3.0, you had to install special support libraries called primary interop assemblies (PIAs) on the target machine to be able to use COM APIs such as Office automation, but in C# 4.0 you no longer have to do this. You still need these PIAs on your development machine, but the C# compiler can extract the information your code requires, and copy it into your application. This saves you from deploying PIAs to the target machine, hence the name, no-PIA . While these new language features are particularly well suited to COM automation interop scenarios, they can be used anywhere. (The no-PIA feature is narrower, but it s really part of the .NET runtime rather than a C# language feature.)
Summary
In this chapter we provided a quick overview of the nature of the C# language, and we showed some of its strengths and how the latest version has evolved. There s one last benefit you should be aware of before we get into the details in the next chapter, and that s the sheer quantity of C# resources available on the Internet. When the .NET Framework first appeared, C# adoption took off much faster than the other .NET languages. Consequently, if you re searching for examples of how to get things done, or solutions to problems, C# is an excellent choice because it s so well represented in blogs, examples, tools, open source projects, and webcasts Microsoft s own documentation is pretty evenhanded between C# and VB.NET, but on the Web as a whole, you re far better served if you re a C# developer. So with that in mind, we ll now look at the fundamental elements of C# programs.
Copyright © OnBarcode.com . All rights reserved.