WPF page 一直Navigate问题

霍大脚 2012-08-27 10:48:02

WPF page使用过程中一直Navigate导致运行一段时间后内存占用很多

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WPF页面切换源码本文包括以下内容: 1. 如何实现Page切换 2. 如何为Page增加淡入淡出(Fade)效果 3. 示例 4. 下一步如何实现Page切换从MFC到Winform几乎切换方式是一致的，找到一个容器，然后将Dialog或是UserControl塞进去就完了，不断的Add/Remove来实现切换画面。在WPF中很不适应，缺少了Panel，不知道该从何而起。在’WPF揭秘’和’WPF in Action’中都有提到使用NavigationWIndow或是Frame来实现导航，，只要Navigate就OK了。操作起来也就3步: 1. 新建Application，Window1默认继承Window，这里改为继承自NavigationWindow，表示支持多Page。 2. 新建Page，任意数量。 3. 然后将NavigationWindow.Source设为默认页面(Default Page)。 4. 在Click中Navigation到相应的Page即可。如何为Page增加淡入淡出(Fade)效果如上所示，Window1继承自NavigationWindow，那么显然抓住Navigating事件不放，做如下操作： 1. 取消当前Navigate请求，如果有当前页的前提下。 2. 淡出当前页，如果有当前页的前提下。 3. 完成淡出过程后Navigate到目标页。 4. 淡入目标页。 3个页面如下： 1. 索引页，包括两个图标，点击分别进入相应页面 Page1，点击返回索引页。

Pro WPF in C# 2010: Windows Presentation Foundation in .NET 4 1216 pages Publisher: Apress; 3 edition (March 31, 2010) Language: English ISBN-10: 1430272058 ISBN-13: 978-1430272052 Microsoft's Windows Presentation Foundation (WPF) provides the foundation for building applications and high-quality user experiences for the Windows operating system. It blends the application user interface, documents, and media content, while exploiting the full power of your computer's operating system. Its functionality extends to the support for Tablet PCs and other forms of input device, and it provides a more modern imaging and printing pipeline, accessibility and UI automation infrastructure, data-driven UIs and visualization, and integration points for weaving the application experience into the Windows shell. This book shows you how WPF really works. It provides you with the no-nonsense, practical advice that you need in order to build high-quality WPF applications quickly and easily. After giving you a firm foundation, it goes on to explore the more advance aspects of WPF and how they relate to the others elements of the .NET 4.0 platform and associated technologies such as Silverlight. What you'll learn WPF basics: XAML, layout, control essentials, and data flow WPF applications: Navigation, commands, localization, and deployment Advanced controls: Custom controls, menus, toolbars, and trees WPF documents: Text layout, printing, and document packaging Graphics and multimedia: Drawing shapes, sound and video, animation, geometric transformations, and imaging Chapter 1: Introducing WPF describes the architecture of WPF, its DirectX plumbing, and the new device-independent measurement system that resizes user interfaces automatically. Chapter 2: XAML describes the XAML standard that you use to define user interfaces. You’ll learn why it was created and how it works, and you’ll create a basic WPF window using different coding approaches. Chapter 3: Layout delves into the layout panels that allow you to organize elements in a WPF window. You’ll consider different layout strategies, and you’ll build some common types of windows. Chapter 4: Dependency Properties describes how WPF uses dependency properties to provide support for key features such as data binding and animation. Chapter 5: Routed Events describes how WPF uses event routing to send events bubbling or tunneling through the elements in your user interface. It also describes the basic set of mouse, keyboard, and multitouch events that all WPF elements support. Chapter 6: Controls considers the controls every Windows developer is familiar with, such as buttons, text boxes, and labels–and their WPF twists. Chapter 7: The Application introduces the WPF application model. You’ll see how to create single- instance and document-based WPF applications. Chapter 8: Element Binding introduces WPF data binding. You’ll see how to bind any type of obje to your user interface. Chapter 9: Commands introduces the WPF command model, which allows you to wire multiple controls to the same logical action. Chapter 10: Resources describes how resources let you embed binary files in your assembly and reuse important objects throughout your user interface. Chapter 11: Styles and Behaviors explains the WPF style system, which lets you apply a set of common property values to an entire group of controls. Chapter 12: Shapes, Brushes, and Transforms introduces the 2-D drawing model in WPF. You’ll learn to create shapes, alter elements with transforms, and paint exotic effects with gradients, tiles and images. Chapter 13: Geometries and Drawings delves deeper into 2-D drawing. You’ll learn to create complex paths that incorporate arcs and curves and how to use complex graphics efficiently. Chapter 14: Effects and Visuals describes lower-level graphics programming. You’ll apply Photoshop-style effects with pixel shaders, build a bitmap by hand, and use WPF’s visual layer for optimized drawing. Chapter 15: Animation Basics explores WPF’s animation framework, which lets you integrate dynamic effects into your application using straightforward, declarative markup. Chapter 16: Advanced Animations explore more sophisticated animation techniques like key-fram animation, path-based animation, and frame-based animation. You’ll also consider a detailed example that shows how to create and manage dynamic animations with code. Chapter 17: Control Templates shows you how you can give any WPF control a dramatic new look (and new behavior) by plugging in a customized template. You’ll also see how templates allow you to build a skinnable application. Chapter 18: Custom Elements explores how you can extend the existing WPF controls and create your own. You’ll see several examples, including a template-based color picker, a flippable panel, custom layout container, and a decorator that performs custom drawing. Chapter 19: Data Binding shows you how to fetch information from a database, insert it into a custom data objects, and bind these objects to WPF controls. You’ll also learn how to improve the performance of huge data-bound lists with virtualization, and catch editing mistakes with validation. Chapter 20: Formatting Bound Data shows some of the tricks for turning raw data into rich data displays that incorporate pictures, controls, and selection effects. Chapter 21: Data Views explores how you use the view in a data-bound window to navigate through a list of data items, and to apply filtering, sorting, and grouping. Chapter 22: Lists, Grids, and Trees gives you a tour of WPF’s rich data controls, including the ListView, TreeView, and DataGrid. Chapter 23: Windows examines how windows work in WPF. You’ll also learn how to create irregularly shaped windows and use Vista glass effects. You’ll also make the most of Windows 7 features by customizing taskbar jump lists, thumbnails, and icon overlays. Chapter 24: Pages and Navigation describes how you can build pages in WPF and keep track of navigation history. You’ll also see how to build a browser-hosted WPF application that can be launched from a website. Chapter 25: Menus, Toolbars, and Ribbons considers command-oriented controls such as menus and toolbars. You’ll also get a taste of more modern user interface with the freely downloadable Ribbon control. Chapter 26: Sound and Video describes WPF’s media support. You’ll see how to control playback for sound and video, and how to throw in synchronized animations and live effects. Chapter 27: 3-D Drawing explores the support for drawing 3-D shapes in WPF. You’ll learn how to create, transform, and animate 3-D objects. You’ll even see how to place interactive 2-D controls on 3-D surfaces. Chapter 28: Documents introduces WPF’s rich document support. You’ll learn to use flow documents to present large amounts of text in the most readable way possible, and you’ll use fixed documents to show print-ready pages. You’ll even use the RichTextBox to provide document editing. Chapter 29: Printing demonstrates WPF’s printing model, which lets you draw text and shapes in a print document. You’ll also learn how to manage page settings and print queues. Chapter 30: Interacting with Windows Forms examines how you can combine WPF and Windows Forms content in the same application–and even in the same window. Chapter 31: Multithreading describes how to create responsive WPF applications that perform time-consuming work in the background. Chapter 32: The Add-In Model shows you how to create an extensible application that can dynamically discover and load separate components. Chapter 33: ClickOnce Deployment shows how you can deploy WPF applications using the ClickOnce setup model.

先参考的别人的代码： WPF学习之页间导航与页间数据传递在WPF中可以非常简单的实现窗口页间的导航：这里有三种方法： 1、Page调用NavigationService.Navigate 新建项目，并新建一个NavigationWindow的窗体作为主窗体，并将Source指向page1.xaml 然后新建一个页面page1，(做为主窗体的主题内容。）在page1上方一个butto...

WPF Page 参数传递在学习C# WPF的过程中，遇到了页面之间相互传递参数的问题，查阅资料，请教了一位大神，在这里记录一下，以备以后使用。namespace Application { public partial class Page1 : Page { private Params params; // 参数 ///

很多时候我们都需要使用 NavigationService 代替 Hyperlink.NavigateUri，比如非默认构造的 Page，动态确定目标页面等等。我们可以使用 Page.NavigationService 或者 NavigationService.GetNavigationService() 获得 NavigationService 的实例引用。页面跳转（Hyperlink，NavigationService），返回上一页，刷新当前页。默认是引用这的，既然是做笔记所以就写进去了。

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