.NET Blog

Take the .Net 4 Beta1 survey

CLR TeamJuly 14, 2009Jul 14, 200907/14/09

 Here is a survey to understand you think about .Net 4 Beta1, and to get a sense of the level of satisfaction, particularly while trying to upgrade existing managed applications to CLR 4, or while creating new CLR 4 applications. This survey should take you about 20 minutes to complete. Here is the link to the survey...

Take the .Net 4 Beta1 survey

CLR TeamJuly 14, 2009Jul 14, 200907/14/09

 Here is a survey to understand you think about .Net 4 Beta1, and to get a sense of the level of satisfaction, particularly while trying to upgrade existing managed applications to CLR 4, or while creating new CLR 4 applications. This survey should take you about 20 minutes to complete. Here is the link to the survey...

Meet the CLR Team, learn about CLR 4

CLR TeamJuly 14, 2009Jul 14, 200907/14/09

Here is your chance to get the scoop straight from the proverbial horse’s mouth. Join the CLR team for an interactive Live Meeting session on Friday, July 17th 2009, and find out what’s new in CLR 4. Apart from an overview of what’s coming up in CLR 4. we will specifically be covering Garbage Collection, NGen and Performance...

CLR Inside Out – Building Tuple

CLR TeamJuly 1, 2009Jul 1, 200907/1/09

The new installment of the “CLR Inside Out” column in MSDN magazine is now available on line.  This month we have an article from Matt Ellis on Building Tuple.  It provides one example of how a new type makes it into the base class libraries. You can find a list of all “CLR Inside Out” articles here. ...

Enabling CAS Policy Compatibility Mode for a Project

CLR TeamJune 24, 2009Jun 24, 200906/24/09

If you’re migrating a VS project over to VS 2010 Beta1 and you are calling code that is passing Evidence objects to the runtime expecting security policy resolution, or if you’re using a permission Deny, you may run into the following exception: NotSupportedException: This method uses CAS policy, which has been obsoleted by the .NET ...

Getting more information than the exception class provides

CLR TeamJune 20, 2009Jun 20, 200906/20/09

We recently had a question about how to get more information than an exception’s type provides. The developer was trying to copy a file and didn’t know why the copy was failing. File copies can fail for many reasons, almost all of them what Eric Lippert calls “exogenous conditions”. The developer was catching System....

Tail Call Improvements in .Net Framework 4

CLR TeamJune 19, 2009Jun 19, 200906/19/09

Grant Richins has a post on the CLR Code Generation team blog that covers the work done to improve the x64 JIT to honor the "tail." instruction prefix, thereby making functional languages like F# more viable. You can find the full post here...

What’s New for .Net Framework Security

CLR TeamJune 11, 2009Jun 11, 200906/11/09

 Shawn Farkas, CLR security developer, has started a cool series of posts on what’s new in .NET Framework 4 security. If you’re doing any work with or have scenarios involving partially trusted code, you’ll want to take a look. Topics include sandboxing, Code Access Security (CAS) Policy, and a nifty Channel 9 video. ...

What’s New for .Net Framework Security

CLR TeamJune 11, 2009Jun 11, 200906/11/09

 Shawn Farkas, CLR security developer, has started a cool series of posts on what’s new in .NET Framework 4 security. If you’re doing any work with or have scenarios involving partially trusted code, you’ll want to take a look. Topics include sandboxing, Code Access Security (CAS) Policy, and a nifty Channel 9 video. ...

New Security Model: Moving to a Better Sandbox

CLR TeamJune 10, 2009Jun 10, 200906/10/09

 For .Net Framework 4, we decided to remove the dependency on caspol and the policy levels and make things simpler. With this change, the default grant-set for assemblies is now FullTrust unless the host (such as InternetExplorer) decides to load them in a sanbox. We also made CodeAccessPermission.Deny obsolete. This MSDN ...