构建Windows 8应用:XAML与C#实战

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"Metro Revealed Building Windows 8 apps with XAML and C#, Adam Freeman" 本书《Metro Revealed: Building Windows 8 apps with XAML and C#》由Adam Freeman撰写,主要探讨了如何使用XAML(Extensible Application Markup Language)和C#语言开发Windows 8平台的 Metro 风格应用。Metro风格的应用是Windows 8操作系统的核心,它提供了一种跨桌面、平板电脑和智能手机的一致性编程和交互模型。这种应用用户体验与以往的Windows应用程序截然不同,以全屏模式运行,注重简洁、直接且无干扰的使用体验。 作者在书中详细介绍了开发Metro应用的关键技术: 1. **第一章:开始** - 这一章可能涵盖了安装开发环境、创建第一个项目以及理解Windows 8开发的基本概念。包括Visual Studio IDE的使用,以及如何设置和配置新项目,以便开始构建 Metro 应用。 2. **第二章:数据、绑定和页面** - 数据绑定是UI和后台数据之间通信的关键,本章可能会讲解如何使用XAML进行数据绑定,以及如何在不同页面间导航。这包括数据源的配置,数据模板的使用,以及如何有效地管理用户界面的页面结构。 3. **第三章:AppBars、Flyouts和导航** - AppBar和Flyout是 Metro UI 的重要组成部分,提供快捷菜单和扩展选项。这一章会讲述如何设计和实现这些功能,同时也会涵盖应用内的导航机制,如如何在不同的页面间跳转,以及保持导航历史的正确性。 4. **第四章:布局和磁贴** - 布局管理在 Metro 应用中至关重要,因为它们决定了应用的视觉呈现。本章将讨论各种布局容器(如Grid、StackPanel等)的使用,以及如何创建动态磁贴,以展示实时更新的信息,这是Windows 8商店应用的一大特色。 5. **第五章:应用生命周期和契约** - Metro应用有独特的生命周期管理,与传统的桌面应用有所不同。这一章会详细解释应用启动、暂停、恢复和关闭的处理,以及如何利用共享体验契约(如分享、搜索和继续)来提升用户体验。 除此之外,书中还可能涵盖了错误处理、调试技巧、性能优化以及提交应用到Windows Store的相关指导。通过阅读这本书,开发者可以全面了解如何利用XAML和C#来构建高效、用户友好的Windows 8 Metro应用。书后附带的索引将进一步帮助读者快速查找特定的技术或主题。 《Metro Revealed: Building Windows 8 apps with XAML and C#》是一本面向Windows 8应用开发者的实用指南,无论你是新手还是有经验的开发者,都能从中学习到开发现代Windows应用所需的关键技能。

马丁路德金的"I have a dream"节选存放在"freedom.txt"中: I have a dream that one day this nation will rise up, live up to the true meaning of its creed: “We hold these truths to be self-evident; that all men are created equal.” I have a dream that one day on the red hills of Georgia the sons of former slaves and the sons of former slave-owners will be able to sit down together at the table of br otherhood. I have a dream that one day even the state of Mississippi, a state sweltering with th e heat of injustice, sweltering with the heat of oppression, will be transformed into an oasis of freedom and justice. I have a dream that my four children will one day live in a nation where they will no t be judged by the color if their skin but by the content of their character. I have a dream today. I have a dream that one day down in Alabama with its governor having his lips drippin g with the words of interposition and nullification, one day right down in Alabama li ttle black boys and black girls will be able to join hands with little white boys and white girls as sisters and brothers. I have a dream today. I have a dream that one day every valley shall be exalted, every hill and mountain sh all be made low, the rough places will be made plain, and the crooked places will be made straight, and the glory of the Lord shall be revealed, and all flesh shall see i t together. 编程实现词汇表,计算每一个单词出现的次数,大小写不区分,输出到"dic.txt" 文件保存。

2023-06-01 上传

Heatwaves impose serious impacts on ecosystems, human health, agriculture, and energy consumption. Previous studies have classified heatwaves into independent daytime, independent nighttime, and compound daytime-nighttime types, and examined the long-term changes in the three types. However, the underlying mechanisms associated with the variations in different heatwave types remain poorly understood. Here we present the first investigation of the local physical processes associated with the daytime, nighttime, and compound heatwaves over the global land during 1979–2020. The results show that three heatwave types occur frequently and increasingly in most regions worldwide. Nighttime and compound heatwaves exhibit stronger increases in both frequency (the yearly number of the events) and fraction (the ratio of the yearly number of one heatwave type to the total yearly number of all types) than daytime heatwaves. Composite diagnostic analyses of local meteorological variables suggest that daytime heatwaves are associated with increased solar radiation under dry conditions and reduced cloud cover and humidity under a clear sky. In contrast, nighttime heatwaves are typically accompanied by moist conditions with increases in cloud fraction, humidity, and longwave radiation at night. These synoptic conditions for daytime and nighttime heatwaves are combined to contribute to compound heatwaves. Local divergences and moisture fluxes responsible for different heatwaves are further revealed. Positive moisture divergence anomalies are seen in most land areas for daytime and compound heatwaves, while they mainly appear in low latitudes for nighttime heatwaves. Our research provides a comprehensive understanding of the local mechanisms of different heatwave types, informing future risks and impact assessments.分析语言特征

2023-06-08 上传

n the present research, a hybrid laser polishing technology combining pulsed laser and continuous wave laser was applied to polish the surface of laser directed energy deposition (LDED) Inconel 718 superalloy components. The surface morphology, microstructure evolution and microhardness of the as-fabricated, the single pulsed laser polishing (SPLP) and the hybrid laser polishing (HLP) processed samples were investigated. The results revealed that the as-fabricated sample has a rough surface with sintered powders. In the matrix, the NbC carbide and Cr2Nb based Laves phase array parallel to the build direction and the small γʺ-Ni3Nb particles precipitate in matrix uniformly. The surface roughness of the as-fabricated sample is 15.75 μm which is decreased to 6.14 μm and 0.23 μm by SPLP and HLP processing, respectively. The SPLP processing refines the grains and secondary phase significantly in the remelted layer which is reconstructured with the cellular structure and plenty of substructures. The HLP processing also refines the grain and secondary phase but the secondary phases still exhibit array distribution. In addition, the tangled dislocations pile up along the interface of secondary phases. Compared with the as-fabricated sample, the SPLP processing decreases the surface microhardness but the HLP processing increases the surface microhardness, and the Young's elasticity modulus of surface layer is improved by SPLP and HLP processing to 282 ± 5.21 GPa and 304 ± 5.57 GPa, respectively. 翻译

2023-07-25 上传