Styles control settings such as width, height, color, etc. NET applications. If you are familiar with ASP. Remember back when you did classic ASP applications? Remember mixing code and HTML together? Then remember when ASP. NET came out and how much easier it was to have a declarative syntax for controls? The same holds true for XAML.
You no longer need to use procedural code in a partial class to create controls on a Windows Form design surface. Now you have a declarative syntax.
Consider the following XAML to define a text box control. The declarative nature of XAML has many benefits. It is compact compared to the many lines of code to declare the same text box within Windows Forms. It lends itself better to code generation. It allows for better portability from desktop to Web as this same code could be interpreted differently based on whether it is running within WPF or Silverlight.
XAML is used for not only control declarations but for actions as well. You can use XAML code to express animation, graphics, data binding and multi-media. Using XAML will significantly reduce the amount of code you need to write when you need to employ these techniques in your applications. In traditional Windows Forms applications, changing the look and feel required a lot of re-work, and a close bond between a programmer and a designer.
WPF changes this traditional approach. A programmer can layout the basic controls in almost any haphazard fashion and get the code working. Then a designer can come in later and completely move the controls around, add color, graphics and any other elements, all without touching any of the back-end code.
You can create all of the styles, and even complete themes for a WPF application, as an external resource. This means you may change the look and feel of an application without re-compiling any of your code! This would be difficult feat with a traditional Windows Forms application. Silverlight 3 even lets you create out-of-browser applications. XAML is a new descriptive programming language developed by Microsoft to write user interfaces for next-generation managed applications. Each element in XAML represents an object which is an instance of a type.
The scope of a type class, enumeration etc. NET Framework library. Each element tag also has a start tag and an end tag. The following code snippet creates a Button object element.
While Windows and their controls are created in XAML at design-time, they can also be created at runtime using C language. C is also used to write all events programming and business logic. All actions, events, and rendering is done in the code behind C code. Here is a free C programming book: C Programming for Beginners. Static Resources: A Static Resource will be resolved and assigned to the property during the loading of the XAML that occurs before the application is actually run.
It will only be assigned once and any changes to the resource dictionary is ignored. Dynamic Resources: A Dynamic Resource assigns an Expression object to the property during loading but does not actually lookup the resource until runtime when the Expression object is asked for the value.
This defers looking up the resource until it is needed at runtime. A good example would be a forward reference to a resource defined later on in the XAML. Another example is a resource that will not even exist until runtime. It will update the target if the source's resource dictionary is changed.
Here is a detailed tutorial: Resources in WPF. Style is a way to group similar properties in a single Style object and apply to multiple objects. A Style is usually added to the resources of a FrameworkElement.
The x:Key is the unique key identifier of the style. Here is a detailed tutorial: Styles in WPF. Templates are an integral part of user interface design in WPF. This article explains templates, their types and how to use them in Windows applications. Here is detailed tutorial: Templates in WPF. The Microsoft new release of.
This update will offer you an opportunity where you can have your application with a specific version of the. NET framework instead of relying on the version which is present on the devices of your customers.
Now this is a big thing coming from Microsoft where it is making a move from WPF to. NET platform. Microsoft has really invested a lot in WPF by making it open source and making it work on. One of the clear benefits of this move is that if you want to build a WPF application , you no longer have to stay within the.
NET framework. This means like the choices backend developers had for frontend technologies since. NET core 1. WPF applications run only on Windows as it makes use of a lot of Windows-specific features. This works the same for WPF applications that work on. NET core platform. NET core is better known for cross-platform framework , it is somewhat unintuitive.
But if you look at the history of WPF, you will understand that things make sense here. When it comes to existing applications we have a doubt regarding whether we need to move it to the.
NET core or not. It is not necessary rather a choice. As per the suggestion of Microsoft, new projects should be built on the newly formed. Here the existing legacy apps which are not important for the business and are in the maintenance mode can be kept. The full.
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