Questions tagged [.net-4.0]

Version 4.0 of the .NET Framework. Use for questions specifically related to .NET Framework 4.0. For questions on .NET Framework generally, use the .net tag.

Released on April 12th, 2010, version 4.0 (4.0.30319.1) of the Microsoft .NET Framework contains numerous enhancements, new features and bug fixes.

What's New in the .NET Framework 4

Language Improvements

Dynamic dispatch via the Dynamic Language Runtime (DLR) and types in the System.Dynamic namespace
Optional and named parameters in C#
Implicit line continuations in Visual Basic .NET
Statement lambdas in Visual Basic .NET
Covariance and contravariance

Base Class Library (BCL) additions:

BigInteger and Complex types
Tuples
Task Parallel Library (TPL) and the Tasks namespace
Managed Extensibility Framework (MEF)

For more information about the new features, see:

8834 questions

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7 answers

InvalidOperationException in my Lazy<> value factory

I have a class containing something like the following: public static class Config { private static Lazy _cfgSrc = new Lazy( () => { /* "ValueFactory" here... */ }, true); public static…

c# .net-4.0 lazy-evaluation

asked Jun 09 '11 at 23:19

Jacob

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In .NET 4.0, how do I 'sandbox' an in-memory assembly and execute a method?

Here is the reason why this question was being asked: www.devplusplus.com/Tests/CSharp/Hello_World. While similar questions were asked before, the many answers online have several issues: This must be done ".Net 4.0" style, not legacy mode. The…

c# security .net-4.0 appdomain

asked May 13 '11 at 21:31

Timothy Khouri

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7 answers

Window out of the screen when maximized using WPF shell integration library

I'm using the WPF Shell Integration Library to create a custom chrome of my wpf app. All is good, but when maximizing the app, 6 or 7 pixels are out of the screen. This is the code I'm using: