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What is new in Windows Presentation Foundation for .NET 3.5 SP1?. Pandurang Nayak & Supreet Singh Client Platform / UX Evangelist | Microsoft Corporation. .NET Framework and Tools Roadmap. 2006 .NET Framework 3.0 VS 2005 Extensions for .NET 3.0 (CTP) 2007 .NET Framework 3.5

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What is new in Windows Presentation Foundationfor .NET 3.5 SP1?

Pandurang Nayak & Supreet Singh

Client Platform / UX Evangelist |Microsoft Corporation

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.NET Framework and Tools Roadmap

  • 2006

    • .NET Framework 3.0

    • VS 2005 Extensions for .NET 3.0 (CTP)

  • 2007

    • .NET Framework 3.5

    • Visual Studio 2008

    • Expression Blend 1.0

  • 2008

    • .NET Framework 3.5 SP1

    • Visual Studio 2008 SP1

    • Expression Blend 2.0

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.NET Framework Roadmap

.NET Framework 3.5 SP1

WPF Enhancements

Other Enhancements (ASP.NET, etc.)

.NET Framework 3.5

WPF 3.5


Add-in Framework

WF & WCF Enhancements

.NET Framework 3.0






.NET Framework 2.0



Base Class Library

WinForms/ ASP.NET

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WPF in a nutshell

  • Rich Windows Applications

  • Great Architecture + Great Graphics

  • Rapid Prototyping

  • 2D, 3D, Vector, Document Flow, Layouts, Composition, etc.

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.NET Client Profile

  • ~25MB Client-only Subset of .NET Fx

    • Includes WinForms, WPF, LINQ, etc.

    • Excludes ASP.NET, WCF, etc.

  • 200KB fully customizable Bootstrapper

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.NET Framework Client Profile

Using the Client Profile Deployment option in Visual Studio 2008 SP1

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WPF 3.0 Graphics Recap

  • Rich set of 2D drawing primitives

  • Basic 3D functionality via Viewport3D

  • Rich Media Integration

  • Extensive Animation System

  • Advanced Text Stack

  • Bitmap Effects

  • Imaging

  • Compositor

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WPF 3.5 Graphics Enhancements

  • True Interactive 2D-on-3D

  • Pixel Shaders Effects Model

    • Hardware-Accelerated

    • HLSL Support

  • DirectX Interop

  • Interop Bitmap

    • Replaces Writeable Bitmap

  • Faster Layered Window Support

  • Animation Fixes

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Graphics Enhancements

Interactive 2D on 3D

Pixel Shader Effects

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New Controls

  • Web Browser Control

    • Interop between HTML and WPF content

    • WPF -> HTML

      • WPF application can call script methods in HTML with WebBrowser.InvokeScript

  • HTML -> WPF

    • Script in HTML can call methods and access properties on WebBrowser.ObjectForScripting that are COM-Visible with window.external

  • Load hosted HTML content from a stream or string

  • Access the document object loaded in the WebBrowser

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    New Controls

    • DataGrid Control

      • Available from WPF Toolkit (www.codeplex.com/wpf)

      • CTP Release with several features, being further improved upon

    • Ribbon-UI Control

      • Part of a future release with other controls and style templates

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    Performance Enhancements

    • Greatly improved cold start time

      • >15% cold start gains for small apps

      • >35% cold start gains for large apps

    • XBAP cold start improvements (real + perceived)

      • ~10% faster XBAP cold start in addition to gains above by improving the concurrency of the ClickOnce download sequence

      • Instant (HTML) download progress UX to improves perceived XBAP startup

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    Performance Enhancements

    • Splash Screen to improve perceived startup for Standalone apps

      • New public SplashScreen APIs

      • Intuitive VS integration (3 clicks to enable)

      • “Add / New Item…/SplashScreen (WPF)”

      • Sample code available for existing apps or for downleveltargeting

      • Downloadable VS Template from WPF Futures (www.codeplex.com/wpf)

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    Perf Tools

    • Snoop

      • Generally useful to understand your app, view element tree.

    • WPFPerf Suite

      • Perf “power toy”, a set of diagnostic tools

    • Visual Studio Profiler

      • Great for CPU profiling

      • VS Developer Edition and VS Team Suite

    • CLR Profiler for .NET

      • Shows managed memory usage and leaks

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    Perf ToolsSnoop

    • Use to understand the size of the app Visual tree

    • Useful to detect Virtualization related issues & large app trees

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    Perf ToolsSnoop

    • Customer app lessons learned:

      • Watch for conditions that may turn virtualization off:

        • Make sure ScrollViewer.CanContentScroll=True

        • Make sure VirtualizingStackPanel.IsVirtualizing=True

        • Keep VirtualizingStackPanel as your default panel …or write own virtualized panel.

        • Avoid Grouping

      • # of elements can grow also when using rich templates

        • Use Snoop to watch element count

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    Perf ToolsWPF Perf Suite

    • Available for external download (WPF SDK & forums)

    • Initial diagnosis of over-invalidation & software rendering

    • A set of tools:

      • Perforator: Analyzes general rendering behavior

      • Visual Profiler: Provides breakdown of an object's use of WPF services, such as rendering and layout

      • String profiler (new): Analyzes where strings are being allocated

      • Event Trace: Analyze events and generating event log files

      • Trace Viewer: Record, display, and browse ETW log files in a WPF user-interface format

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    Perf ToolsWPF Perf Suite: Perforator

    • To detect low perf b/c SW rendering:

      • Tint SW rendering: Draws purple when falling back to SW (or when SW api used, old driver, card, layered windows on XP, etc)

      • # SW Render Targets: If not 0, significant perf problem (old card, layered windows on XP)

      • # HW Render Targets: # should be equal to the number of app windows times # of display adapters. Indicates app running in HW

    • Low perf indicators

      • Large # of Intermediate Render Targets: additional images that WPF needs in order to get content ready for drawing

      • Maximum SW/HW IRTs per Frame:Shows max # of surfaces needed to render any one frame of the application. Usually caused by the use of DrawingBrush, VisualBrush, Opacity, or Tile modes on a TileBrush. If # high (e.g. > 7), indicates a potential perf issue

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    Perf Tools - Perforator

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    Perf ToolsWPF Perf Suite: Visual Profiler

    • Inspect the Visual Tree

      • Show “hot path” of layout time: Tints the elements in the tree based on their time spent in layout

      • Shows inclusive/exclusive times and element counts

      • History graph of time breakdown: Helps identify whether an application’s bottlenecks lie in layout, rendering, animation, etc

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    Perf Tools - Visual Profiler

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    Perf ToolsETW Event Trace & Event Trace Viewer

    • Useful to view low-level WPF ETW events.

      WClientUceNotifyPresent: Use to calculate frames-per-second rendering perf (e.g. during animation, video, etc)

      WClientLayout: Use to calculate time app spends in laying out controls (e.g. during resize)

    • Can also use Xperf/Xperfinfo

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    WPF 3.5 Application

    Running Snoop on photoSuru

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    • What’s new in WPF 3.5 SP1?


    • Introducing .NET Framework Client Profile


    • Optimizing WPF App Performance MSDN paper


    • Snoop tool


    • Various performance related blog


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    • Blog Address


    • Email Address

      [email protected]

      [email protected]