WPF performance and .NET Framework Client Profile related blogs provided by Jossef Goldberg.
Hopefully folks have seen Soma’s and Jason Zander’s blogs announcing the availability of Beta 1 of Visual Studio 2010 and .NET Framework 4. In .NET Framework 4 we introduced a streamlined subset and more compact version of the .NET Framework called the Microsoft .NET Framework 4 Client Profile. The goal of the Client Profile is to improve the deployment size, time, reliability and overall deployment experience for client application users.
The Client Profile contains the functionality that most common desktop client applications (including Windows Forms and WPF applications) would need, so we expect that many client application developers will use it. This will improve the overall application deployment experience when the application requires .NET Framework 4 to be installed.
One of the most important improvement is that Microsoft .NET Framework 4 Client Profile is now supporting all platforms and OS's that are supported by the full Framework including Vista, XP, Win2k3, Win2k8, Windows7, x86/x64 (excluding IA64)
We still expect some applications to target the full .NET Framework 4 if they need to use features that are not included in the .NET Framework 4 Client Profile.
Visual Studio 2008 introduced multitargeting for application projects to target 2.0 and 3.x versions of the .NET Framework. Visual Studio 2010 has improved multi-targeting in order to allow developers to easily target the new .NET Framework 4 Client Profile.
In Beta 1, when you create a new Windows Forms or WPF application, it targets the full framework by default. To change to targeting to the Client Profile, open the project properties, select the "Application" page, and change the “Target Framework” drop-down to “.NET Framework 4.0 Client Profile.”
C# project example:
VB project example (Project Properties > Compile tab > “Advanced Compile Options…”):
Notice that if you right-click the project and select “Add References…”, the dialog will show only the .NET Framework assemblies that are part of the Client Profile. This is accomplished by using reference assemblies, metadata-only versions of assemblies. The .NET Framework 4 Client Profile Reference Assemblies are located in
At compile time, the reference assemblies are matched up against the known "Client List" assemblies that are included in the Client Profile. If the project has a reference to a .NET assembly that is not included in the "Client List", Visual Studio will display compile-time errors in the Error List.
Similar to the .NET 3.5 Framework SP1 Client Profile, the project adds a configuration file (app.config) that will specifically declare the application as a "client" application. This declaration indicates to the CLR loader that you are trying to run a Client Profile application. Without the configuration file, the CLR loader thinks that you are trying to run full .NET 4, and if the machine only has the Client Profile installed, it prompts ebd-user to install the full .NET 4. [Note: this functionality is not available in Beta1.]
Although the concept of a Client Profile is not new and was introduced in .NET Framework 3.5 SP1, the 4.0 Client Profile contains important improvements:
.NET Framework 4 Client Profile
.NET Framework 3.5 SP1 Client Profile
Supported on all platforms and OS's that are supported by the .NET Framework (excluding IA64 and Server Core role in W2K8)
Supported only on Windows XP 32-bit machines that did not have any .NET Framework version installed.
(Client Profile will install the full 3.5 SP1 Framework under the covers otherwise)
Supports redistributable as well as web download
Supports Web download only
Add Remove Programs entries
The full Framework comprises the Client Profile and another part called “Extended” thus it has two entries in the Add Remove Programs dialog (or Programs and Features window).
To remove (or repair) the full Framework you must remove the Extended part first, then the Client part.
If you installed the full Framework, you can go to the Client Profile by removing “Extended” from Add/Remove Programs.
Single entry in Add Remove Programs
Improved support for Client Profile targeting in Visual Studio 2010
Includes new .NET 4 features (such as Managed Extensibility Framework (MEF), C# 4 Dynamic Keyword, etc)
Common Language Runtime
Can be installed side-by-side with older versions of the Framework
In-process side by side support
Improved COM interop
Innovations in the Visual Basic and C# languages
implicit line continuations
Base Class Library Improvements
Managed Extensibility Framework
Additional core data structures
Parallel Computing Innovations
Task Parallel Library (TPL)
Parallel LINQ (PLINQ)
REST-based exposure of relational data
Entity Framework, LINQ to Entities
SqlClient, OLEDB, ODBC Managed Providers
XML, LINQ to XML
LINQ to SQL
Runtime design libraries for Entity Framework and ADO.NET Data Services
ASP.NET AJAX Improvements
More extensibility during XamlReader.Load and XamlWriter.Save
Ability to use generics
Better References by Name
Windows Communications Foundation
WCF Client Component
WCF Workflow Services
Windows Presentation Foundation
New line-of-business controls including charting control, smart edit, data grid, and others that improve the experience for developers who build data centric applications
Support in for Windows 7 multi-touch, ribbon controls, and taskbar extensibility features
Added support in WPF for Surface 2.0 SDK
Windows Workflow Foundation
Improved activity programming model
Improved designer experience
New flowchart modeling style
Expanded activity palette
New message correlation features
Significant performance gains for WF-based workflows
Various perf counters
Visual Basic compiler and other compilers
• Full Support
○ Partial Support
Please download the Client Profile from the download site here and provide us with feedback. We really would love to know: