zoukankan      html  css  js  c++  java
  • XmlnsDefinitionAttribute Is Pretty Nifty

     When we want to declaratively use our custom controls or reference the types we defined in XAML, we should declare the XML namespace to map to the CLR namespace in which the controls and types are defined as the following XAML snippt demonstrates:

    <Page x:Class="Test.MainWindow"          xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"           xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"          xmlns:cc="clr-namespace:Sheva.Windows.Controls;assembly=AvalonLib"/>

        Recently, I am heavily engaged with writing a resuable WPF control library, and quite often I need to create some pages to test those controls I create, so ever now and then I have to use the cumbersome syntax like above to declare the XML namespace, personally I don't like the syntax, and I thought Microsoft WPF team should come up with a more elegant way of doing it, and in actuality, they did introduce an alternative to do it since the CTP releases. there is a custom attribute called XmlnsDefinitionAttribute in the System.Windows.Markup namespace which allows you to apply to the assembly which contains the types and controls the XAML code would reference.the built-in WPF assemblies such as WindowsBase.dll, PresentationCore.dll, and PresentationFramework.dll all have this attribute applied, and all have http://schemas.microsoft.com/winfx/2006/xaml/presentation namespace mapped with the CLR namespaces introduced by them. and of cause you can use this attribute in your own project, just open the AssemblyInfo.cs file, and append the following directive:

    [assembly: XmlnsDefinition("http://schemas.sheva.com/wpf/""Sheva.Windows.Controls")]

        Then you can declare the namespace alias in XAML this way:

    <Page x:Class="Test.MainWindow"          xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"           xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"          xmlns:cc="http://schemas.sheva.com/wpf/"/>

            Wow, this is a bit like the built-in xmlns declaration indeed, really really cool indeed:)

  • 相关阅读:
    加密算法 科普文
    《电商后台系统产品逻辑解析》学习笔记
    基于Docker的Consul服务发现集群搭建
    从阿里中台战略看企业IT架构转型之道
    CanalSharp.AspNetCore v0.0.4-支持输出到MongoDB
    领域驱动设计学习之路—DDD的原则与实践
    一个实时收集MySql变更记录的组件CanalSharp.AspNetCore
    基于Jenkins Pipeline的ASP.NET Core持续集成实践
    熊逸《唐诗50讲》感时篇
    一个Mini的ASP.NET Core框架的实现
  • 原文地址:https://www.cnblogs.com/zjoch/p/3366544.html
Copyright © 2011-2022 走看看