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Free. Cross-platform. Open source. A developer platform for building all your apps.
May 6, 2019May 6, 201905/6/19Today, we’re announcing that the next release after .NET Core 3.0 will be .NET 5. This will be the next big release in the .NET family.
There will be just one .NET going forward, and you will be able to use it to target Windows,
April 29, 2019Apr 29, 201904/29/19DockerCon 2019 is being held this week, in San Francisco. We posted a DockerCon 2018 update last year, and it is time to share how we’ve improved the experience of using .NET and Docker together over the last year.
We have a group of .NET Core team members attending the conference again this year.
April 24, 2019Apr 24, 201904/24/19Today at Spark + AI summit we are excited to announce .NET for Apache Spark. Spark is a popular open source distributed processing engine for analytics over large data sets. Spark can be used for processing batches of data, real-time streams,
April 19, 2019Apr 19, 201904/19/19Upcoming Updates for .NET Framework 4.8
The .NET Framework 4.8 product release is now available. The .NET Framework 4.8 product will receive updates on the same cadence and the usual channels (Windows Update, WSUS, Catalog) as all .NET Framework and Windows cumulative updates.
April 18, 2019Apr 18, 201904/18/19Today, we are making the fourth preview of Entity Framework Core 3.0 available on NuGet, alongside .NET Core 3.0 Preview 4 and ASP.NET Core 3.0 Preview 4. We encourage you to install this preview to test the new functionality and assess the impact of the included breaking changes.
April 18, 2019Apr 18, 201904/18/19Today, we are announcing .NET Core 3.0 Preview 4. It includes a chart control for Windows Forms, HTTP/2 support, GC updates to use less memory, support for CPU limits with Docker, the addition of PowerShell in .NET Core SDK Docker container images,
April 18, 2019Apr 18, 201904/18/19We are thrilled to announce the release of the .NET Framework 4.8 today. It’s included in the Windows 10 May 2019 Update. .NET Framework 4.8 is also available on Windows 7+ and Windows Server 2008 R2+.
You can install .NET 4.8 from our .NET Download site.
April 9, 2019Apr 9, 201904/9/19Today, we are releasing the .NET Core April 2019 Update. These updates contain security and reliability fixes. See the individual release notes for details on included fixes.
.NET Core 2.2.4 and .NET Core SDK 2.2.106 ( Download | Release Notes )
.NET Core 2.1.10 and .NET Core SDK 2.1.506 ( Download | Release Notes)
Security
Microsoft Security Advisory CVE-2019-0815: ASP.NET Core Denial of Service Vulnerability
A denial of service vulnerability exists in ASP.NET Core 2.2 where,
April 8, 2019Apr 8, 201904/8/19I’ve been talking about doing managed heap performance analysis with ETW events for ages because ETW is just such a powerful tool. It has a well defined format so many components, from kernel modes to user mode ones, all emit ETW events which means you can have tools that just know how to parse the event format and correlate them.
April 5, 2019Apr 5, 201904/5/19ML.NET is an open-source and cross-platform machine learning framework (Windows, Linux, macOS) for .NET developers. Using ML.NET, developers can leverage their existing tools and skillsets to develop and infuse custom AI into their applications by creating custom machine learning models for common scenarios like Sentiment Analysis,
AI Machine Learning
February 5, 2019Feb 5, 201902/5/19This post was written by Lena Hall, a Senior Cloud Developer Advocate at Microsoft.
F# Software Foundation has recently announced their new initiative — Applied F# Challenge! We encourage you to participate and send your submissions about F# on Azure through the participation form.
![Bri Achtman [MSFT]](https://devblogs.microsoft.com/dotnet/wp-content/uploads/sites/10/2019/02/BriAchtman.jpeg){kind=avatar}
January 9, 2019Jan 9, 201901/9/19ML.NET is an open source and cross-platform machine learning framework made for .NET developers. .NET developers can use their C# or F# skills to easily integrate custom machine learning into their web, mobile, desktop, gaming, or IoT applications without any prior expertise in developing or tuning machine learning models.
December 4, 2018Dec 4, 201812/4/18ML.NET is an open-source and cross-platform framework (Windows, Linux, macOS) which makes machine learning accessible for .NET developers.
ML.NET allows you to create and use machine learning models targeting scenarios to achieve common tasks such as sentiment analysis, issue classification, forecasting,
November 8, 2018Nov 8, 201811/8/18We’re excited to announce today the release of ML.NET 0.7 – the latest release of the cross-platform and open source machine learning framework for .NET developers (ML.NET 0.1 was released at //Build 2018). This release focuses on enabling better support for recommendation based ML tasks,
October 10, 2018Oct 10, 201810/10/18This week’s blog post is by Brian Lui, one of our summer interns on the .NET team, who’s been hard at work. Over to Brian:
Hello everyone! This summer I interned in the .NET team, working on ML.NET, an open-source machine learning platform which enables .NET developers to build and use machine learning models in their .NET applications.
October 8, 2018Oct 8, 201810/8/18Today we’re announcing our latest monthly release: ML.NET 0.6! ML.NET is a cross-platform, open source machine learning framework for .NET developers. We want to enable every .NET developer to train and use machine learning models in their applications and services. If you haven’t tried ML.NET yet,
November 15, 2017Nov 15, 201711/15/17Overview
Tensor is an exchange type for homogenous multi-dimensional data for 1 to N dimensions. The motivation behind introducing Tensor<T> is to make it easy for Machine Learning library vendors like CNTK, Tensorflow, Caffe, Scikit-Learn to port their libraries over to .NET with minimal dependencies in place.
ASP.NET
April 9, 2019Apr 9, 201904/9/19Today, we are releasing the .NET Core April 2019 Update. These updates contain security and reliability fixes. See the individual release notes for details on included fixes.
.NET Core 2.2.4 and .NET Core SDK 2.2.106 ( Download | Release Notes )
.NET Core 2.1.10 and .NET Core SDK 2.1.506 ( Download | Release Notes)
Security
Microsoft Security Advisory CVE-2019-0815: ASP.NET Core Denial of Service Vulnerability
A denial of service vulnerability exists in ASP.NET Core 2.2 where,
March 5, 2019Mar 5, 201903/5/19It is challenging to collect performance traces of ASP.NET Core applications running inside Linux containers. This blog post describes an approach that use a sidecar container to collect CPU trace of an ASP.NET application running in a Linux container.
February 27, 2018Feb 27, 201802/27/18Connecting to databases and services is an important part of desktop application development for many of our customers. Visual Studio provides a variety of tools and technologies that can help you connect to and interact with your different data sources. We’d love your help in shaping our future offerings in this space!
September 26, 2017Sep 26, 201709/26/17Earlier this year, I wrote about an update to the roadmap for F# and .NET Core. I had mentioned that there were a number of things you could build with F# and .NET Core today, such as web services. In this post,
July 24, 2017Jul 24, 201707/24/17Get Started with F# as a C# developer
One of our previous posts, Why You Should Use F#, listed a few reasons why F# is worth trying out today. In this post, we’ll cover some of the basics you need to know to be successful.
Azure
October 16, 2018Oct 16, 201810/16/18We can all agree that tracking the progress of a project enhances productivity and is an effective way to keep everyone involved of its progress. When it comes to managing your project in Azure DevOps (formerly VSTS) or GitHub, you have all of your artifacts in one place: code,
C#
May 16, 2019May 16, 201905/16/19Try .NET is an interactive documentation generator for .NET Core. Using the dotnet try global tool you can now create interactive documentation too. This is an early preview of the dotnet try global tool so, please check our repository and NuGet package for regular updates.
May 15, 2019May 15, 201905/15/19Take a tour through some of the many improvements, big and small, that have gone into the .NET Core 3.0 runtime and core libraries to make apps and services leaner and faster.
May 14, 2019May 14, 201905/14/19Default implementations in interfaces
With last week’s posts Announcing .NET Core 3.0 Preview 5 and Visual Studio 2019 version 16.1 Preview 3, the last major feature of C# 8.0 is now available in preview.
A big impediment to software evolution has been the fact that you couldn’t add new members to a public interface.
May 6, 2019May 6, 201905/6/19Today, we are announcing .NET Core 3.0 Preview 5. It includes a new Json serializer, support for publishing single file executables, an update to runtime roll-forward, and changes in the BCL. If you missed it, check out the improvements we released in .NET Core 3.0 Preview 4,
April 2, 2019Apr 2, 201904/2/19Your friendly neighborhood .NET productivity team (aka. Roslyn) focuses a lot on improving the .NET coding experience. Sometimes it’s the little refactorings and code fixes that really improve your workflow. You may have seen many improvements in the previews, but for all of you who were eagerly awaiting the GA release here’s a few features you may enjoy!
February 27, 2019Feb 27, 201902/27/19Starting with Visual Studio 2019 Preview 4, we'll be adjusting how C# versions are treated in .NET tooling. Firstly, we're adding two new Language Version (LangVersion) values: LatestMajor and Preview. Rad the post to see how they stack up with the currently supported list of values.
December 5, 2018Dec 5, 201812/5/18Take C# 8.0 for a spin
Yesterday we announced the first preview of both Visual Studio 2019 (Making every developer more productive with Visual Studio 2019) and .NET Core 3.0 (Announcing .NET Core 3 Preview 1 and Open Sourcing Windows Desktop Frameworks).
November 12, 2018Nov 12, 201811/12/18Building C# 8.0
The next major version of C# is C# 8.0. It’s been in the works for quite some time, even as we built and shipped the minor releases C# 7.1, 7.2 and 7.3, and I’m quite excited about the new capabilities it will bring.
Docker
May 6, 2019May 6, 201905/6/19Today, we are announcing .NET Core 3.0 Preview 5. It includes a new Json serializer, support for publishing single file executables, an update to runtime roll-forward, and changes in the BCL. If you missed it, check out the improvements we released in .NET Core 3.0 Preview 4,
April 29, 2019Apr 29, 201904/29/19DockerCon 2019 is being held this week, in San Francisco. We posted a DockerCon 2018 update last year, and it is time to share how we’ve improved the experience of using .NET and Docker together over the last year.
We have a group of .NET Core team members attending the conference again this year.
Entity Framework
June 13, 2019Jun 13, 201906/13/19New previews of the next versions of EF Core and EF 6 are now available on NuGet.Org.
What is new in EF Core 3.0 Preview 6
In recent months, a lot of our efforts have been focused on a new LINQ implementation for EF Core 3.0.
May 8, 2019May 8, 201905/8/19The first preview of the EF 6.3 runtime is now available in NuGet.
Note that the package is versioned as 6.3.0-preview5. We plan to continue releasing previews of EF 6.3 every month in alignment with the .NET Core 3.0 previews, until we ship the final version.
April 18, 2019Apr 18, 201904/18/19Today, we are making the fourth preview of Entity Framework Core 3.0 available on NuGet, alongside .NET Core 3.0 Preview 4 and ASP.NET Core 3.0 Preview 4. We encourage you to install this preview to test the new functionality and assess the impact of the included breaking changes.
December 4, 2018Dec 4, 201812/4/18Today we’re making the final version of EF Core 2.2 available, alongside ASP.NET Core 2.2 and .NET Core 2.2. This is the latest release of our open-source and cross-platform object-database mapping technology.
EF Core 2.2 RTM includes more than a hundred bug fixes and a few new features:
Spatial data support
Spatial data can be used to represent the physical location and shape of objects.
October 17, 2018Oct 17, 201810/17/18Entity Framework Core 2.2 Preview 3 available with a new preview of our data provider for Cosmos DB and updated spatial extensions for various providers. Preview 3 is going to be the last milestone before EF Core 2.2 RTM, so now is your last chance to try the bits and give us feedback if you want to have an impact on the quality and the shape of the APIs in this release.
September 12, 2018Sep 12, 201809/12/18Today we are making EF Core 2.2 Preview 2 available, together with a preview of our data provider for Cosmos DB and new spatial extensions for our SQL Server and in-memory providers.
Obtaining the preview
The preview bits are available on NuGet,
May 30, 2018May 30, 201805/30/18Today we are excited to announce the release of Entity Framework (EF) Core 2.1. This is the latest production-ready release of our open-source and cross-platform data access technology. We are releasing today alongside .NET Core 2.1 and ASP.NET Core 2.1. EF Core 2.1 targets .NET Standard 2.0 and so also runs on .NET Core 2.0 and .NET Framework 4.6.1 or later.
May 7, 2018May 7, 201805/7/18Today, we are excited to announce that the first release candidate of EF Core 2.1 is available, alongside .NET Core 2.1 RC 1 and ASP.NET Core 2.1 RC 1, for broad testing, and now also for production use!
Go live support
EF Core 2.1 RC1 is a “go live”
April 11, 2018Apr 11, 201804/11/18Today we’re releasing the second preview of EF Core 2.1, alongside .NET Core 2.1 Preview 2 and ASP.NET Core 2.1 Preview 2.
Thank you so much to everyone who has tried our early builds and has helped shape this release with their feedback and code contributions!
February 27, 2018Feb 27, 201802/27/18Today we are releasing the first preview of EF Core 2.1, alongside .NET Core 2.1 Preview 1 and ASP.NET Core 2.1 Preview 1.
The new bits are available in NuGet as part of the individual packages, and as part of the ASP.NET Core meta-packages (both Microsoft.AspNetCore.All and the new Microsoft.AspNetCore.App),
F#
May 20, 2019May 20, 201905/20/19TL;DR We’ve moved the F# GitHub repository from microsoft/visualfsharp to dotnet/fsharp, as specified in the corresponding RFC.
F# has a somewhat strange history in its name and brand. If we roll back the clocks to the year 2015, F# sort of had two identities.
March 29, 2019Mar 29, 201903/29/19We’re excited to announce general availability of F# 4.6 and the F# tools for Visual Studio 2019! In this post, I’ll show you how to get started, explain the F# 4.6 feature set, give you an update on the F# tools for Visual Studio,
February 5, 2019Feb 5, 201902/5/19This post was written by Lena Hall, a Senior Cloud Developer Advocate at Microsoft.
F# Software Foundation has recently announced their new initiative — Applied F# Challenge! We encourage you to participate and send your submissions about F# on Azure through the participation form.
January 24, 2019Jan 24, 201901/24/19F# 4.6 is now fully released. See the announcement blog post for more.
We’re excited to announce that Visual Studio 2019 will ship a new version of F# when it releases: F# 4.6!
F# 4.6 is a smaller update to the F# language,
August 14, 2018Aug 14, 201808/14/18Today, we’re incredibly pleased to announce general availability of F# 4.5.
This post will walk through the changes in F# 4.5 (just like the preview post), then show some updates to F# tooling, and finally talk a bit about where what we’re thinking about for the next F# version.
July 26, 2018Jul 26, 201807/26/18 Accounting for this change on Windows build servers: You may be doing one of the following things to install F# on a Windows build server. Installing the full Visual Studio IDE Installing the F# Compiler SDK MSI Neither of these options have been recommended for some time, but are still available with F# 4.1. For using F# 4.5 in a Windows build server, we recommend (in order of preference), Using the .NET SDK, the FSharp.Compiler.Tools package, or the Visual Studio Build Tools SKU.
Better async stack traces Starting with F# 4.5 and FSharp.Core 4.5.0, stack traces for async computation expressions: Reported line numbers now correspond to the failing user code Non-user code is no longer emitted For example, consider the following DSL and its usage with an FSharp.Core version prior to 4.5.0: Note that both the f1 and f2 functions are called twice.
May 8, 2018May 8, 201805/8/18We’re excited to share updates about changes to F# and F# tools which shipped with the Visual Studio 2017 version 15.7 release. Let’s dive in!
Type Providers now support .NET Standard
For those who aren’t familiar with Type Providers, they are a feature of F# which allow you to get IntelliSense for data.
March 6, 2018Mar 6, 201803/6/18With the release of Visual Studio 2017 version 15.6, we’re excited to share updates to the F# language and core library, F# tooling in Visual Studio, and infrastructure updates that concern OSS contributors. Let’s dive in!
F# language and core library updates
Some foundational changes for the F# language and core library have been made,
November 15, 2017Nov 15, 201711/15/17We’re pleased to announce that Visual Studio 2017 15.5 Preview 4 now supports F# projects targeting .NET Core, .NET Standard, and .NET Framework through the .NET Core SDK. Some of you have noticed various levels of this support in the first,
September 26, 2017Sep 26, 201709/26/17Earlier this year, I wrote about an update to the roadmap for F# and .NET Core. I had mentioned that there were a number of things you could build with F# and .NET Core today, such as web services. In this post,
LOH
May 31, 2016May 31, 201605/31/16I wrote this article in 2008 and the MSDN website no longer has it so I am making it available here. Please note that it has been quite a while and some things related to LOH have changed quite a bit.
Machine Learning
March 29, 2019Mar 29, 201903/29/19We’re excited to announce general availability of F# 4.6 and the F# tools for Visual Studio 2019! In this post, I’ll show you how to get started, explain the F# 4.6 feature set, give you an update on the F# tools for Visual Studio,
February 5, 2019Feb 5, 201902/5/19This post was written by Lena Hall, a Senior Cloud Developer Advocate at Microsoft.
F# Software Foundation has recently announced their new initiative — Applied F# Challenge! We encourage you to participate and send your submissions about F# on Azure through the participation form.
January 10, 2019Jan 10, 201901/10/19
Announcing ML.NET 0.9 – Machine Learning for .NET
ML.NET is an open-source and cross-platform machine learning framework (Windows, Linux, macOS) for .NET developers. Using ML.NET, developers can leverage their existing tools and skillsets to develop and infuse custom AI into their applications by creating custom machine learning models.
October 8, 2018Oct 8, 201810/8/18Today we’re announcing our latest monthly release: ML.NET 0.6! ML.NET is a cross-platform, open source machine learning framework for .NET developers. We want to enable every .NET developer to train and use machine learning models in their applications and services. If you haven’t tried ML.NET yet,
May 31, 2017May 31, 201705/31/17Why you should use F#
This post was written by Phillip Carter and Mads Torgersen. Both work on languages on the .NET team.
At Build 2017, we presented a tech talk entitled “Why You Should Use F#”. However, not everyone can attend Build,
ML.NET
June 11, 2019Jun 11, 201906/11/19ML.NET is an open-source and cross-platform machine learning framework (Windows, Linux, macOS) for .NET developers.
ML.NET offers Model Builder Model Builder (a simple UI tool for Visual Studio) and CLI to make it super easy to build custom ML Models using AutoML.
February 5, 2019Feb 5, 201902/5/19This post was written by Lena Hall, a Senior Cloud Developer Advocate at Microsoft.
F# Software Foundation has recently announced their new initiative — Applied F# Challenge! We encourage you to participate and send your submissions about F# on Azure through the participation form.
January 10, 2019Jan 10, 201901/10/19
Announcing ML.NET 0.9 – Machine Learning for .NET
ML.NET is an open-source and cross-platform machine learning framework (Windows, Linux, macOS) for .NET developers. Using ML.NET, developers can leverage their existing tools and skillsets to develop and infuse custom AI into their applications by creating custom machine learning models.
November 8, 2018Nov 8, 201811/8/18We’re excited to announce today the release of ML.NET 0.7 – the latest release of the cross-platform and open source machine learning framework for .NET developers (ML.NET 0.1 was released at //Build 2018). This release focuses on enabling better support for recommendation based ML tasks,
October 8, 2018Oct 8, 201810/8/18Today we’re announcing our latest monthly release: ML.NET 0.6! ML.NET is a cross-platform, open source machine learning framework for .NET developers. We want to enable every .NET developer to train and use machine learning models in their applications and services. If you haven’t tried ML.NET yet,
August 7, 2018Aug 7, 201808/7/18A few months ago we released ML.NET 0.1 at //Build 2018., ML.NET is a cross-platform, open source machine learning framework for .NET developers. We’ve gotten great feedback so far and would like to thank the community for your engagement as we continue to develop ML.NET together in the open.
May 7, 2018May 7, 201805/7/18Today at //Build 2018, we are excited to announce the preview of ML.NET, a cross-platform, open source machine learning framework. ML.NET will allow .NET developers to develop their own models and infuse custom ML into their applications without prior expertise in developing or tuning machine learning models.
.NET
June 10, 2019Jun 10, 201906/10/19In part 1 of this blog series, I began the process of porting a sample WPF app to .NET Core. In that post, I described the .NET Core migration process as having four steps:
We previously went through the first two steps –
June 10, 2019Jun 10, 201906/10/19Olia recently wrote a post about how to port a WinForms app from .NET Framework to .NET Core. Today, I’d like to follow that up by walking through the steps to migrate a sample WPF app to .NET Core 3. Many of these steps will be familiar from Olia’s post,
![Scott Hunter [MSFT]](https://devblogs.microsoft.com/dotnet/wp-content/uploads/sites/10/2019/02/scotthunter-1-150x150.png){kind=avatar}
June 7, 2019Jun 7, 201906/7/19At the Build conference in May 2019, we mentioned that, after we add WinForms, WPF and Entity Framework 6 to .NET Core 3.0, we do not plan to add any more of the technologies from .NET Framework to .NET Core.
This means we will not be adding ASP.NET Web Forms,
May 20, 2019May 20, 201905/20/19TL;DR We’ve moved the F# GitHub repository from microsoft/visualfsharp to dotnet/fsharp, as specified in the corresponding RFC.
F# has a somewhat strange history in its name and brand. If we roll back the clocks to the year 2015, F# sort of had two identities.
May 15, 2019May 15, 201905/15/19Take a tour through some of the many improvements, big and small, that have gone into the .NET Core 3.0 runtime and core libraries to make apps and services leaner and faster.
May 14, 2019May 14, 201905/14/19Default implementations in interfaces
With last week’s posts Announcing .NET Core 3.0 Preview 5 and Visual Studio 2019 version 16.1 Preview 3, the last major feature of C# 8.0 is now available in preview.
A big impediment to software evolution has been the fact that you couldn’t add new members to a public interface.
May 8, 2019May 8, 201905/8/19This post was written by Vicky Harp, Program Manager on SqlClient and SQL Server Tools.
Those of you who have been following .NET development closely have very likely seen Scott Hunter’s latest blog post, .NET Core is the Future of .NET.
May 8, 2019May 8, 201905/8/19The first preview of the EF 6.3 runtime is now available in NuGet.
Note that the package is versioned as 6.3.0-preview5. We plan to continue releasing previews of EF 6.3 every month in alignment with the .NET Core 3.0 previews, until we ship the final version.
April 19, 2019Apr 19, 201904/19/19Upcoming Updates for .NET Framework 4.8
The .NET Framework 4.8 product release is now available. The .NET Framework 4.8 product will receive updates on the same cadence and the usual channels (Windows Update, WSUS, Catalog) as all .NET Framework and Windows cumulative updates.
April 18, 2019Apr 18, 201904/18/19We are thrilled to announce the release of the .NET Framework 4.8 today. It’s included in the Windows 10 May 2019 Update. .NET Framework 4.8 is also available on Windows 7+ and Windows Server 2008 R2+.
You can install .NET 4.8 from our .NET Download site.
.NET Core
June 12, 2019Jun 12, 201906/12/19Today, we are announcing .NET Core 3.0 Preview 6. It includes updates for compiling assemblies for improved startup, optimizing applications for size with linker and EventPipe improvements. We’ve also released new Docker images for Alpine on ARM64.
Download .NET Core 3.0 Preview 6 right now on Windows,
June 10, 2019Jun 10, 201906/10/19In part 1 of this blog series, I began the process of porting a sample WPF app to .NET Core. In that post, I described the .NET Core migration process as having four steps:
We previously went through the first two steps –
June 10, 2019Jun 10, 201906/10/19Olia recently wrote a post about how to port a WinForms app from .NET Framework to .NET Core. Today, I’d like to follow that up by walking through the steps to migrate a sample WPF app to .NET Core 3. Many of these steps will be familiar from Olia’s post,
June 7, 2019Jun 7, 201906/7/19At the Build conference in May 2019, we mentioned that, after we add WinForms, WPF and Entity Framework 6 to .NET Core 3.0, we do not plan to add any more of the technologies from .NET Framework to .NET Core.
This means we will not be adding ASP.NET Web Forms,
May 28, 2019May 28, 201905/28/19Since I’ve been working with the community on porting desktop applications from .NET Framework to .NET Core, I’ve noticed that there are two camps of folks: some want a very simple and short list of instructions to get their apps ported to .NET Core while others prefer a more principled approach with more background information.
May 20, 2019May 20, 201905/20/19TL;DR We’ve moved the F# GitHub repository from microsoft/visualfsharp to dotnet/fsharp, as specified in the corresponding RFC.
F# has a somewhat strange history in its name and brand. If we roll back the clocks to the year 2015, F# sort of had two identities.
May 16, 2019May 16, 201905/16/19Try .NET is an interactive documentation generator for .NET Core. Using the dotnet try global tool you can now create interactive documentation too. This is an early preview of the dotnet try global tool so, please check our repository and NuGet package for regular updates.
May 15, 2019May 15, 201905/15/19Take a tour through some of the many improvements, big and small, that have gone into the .NET Core 3.0 runtime and core libraries to make apps and services leaner and faster.
May 8, 2019May 8, 201905/8/19This post was written by Vicky Harp, Program Manager on SqlClient and SQL Server Tools.
Those of you who have been following .NET development closely have very likely seen Scott Hunter’s latest blog post, .NET Core is the Future of .NET.
May 8, 2019May 8, 201905/8/19The first preview of the EF 6.3 runtime is now available in NuGet.
Note that the package is versioned as 6.3.0-preview5. We plan to continue releasing previews of EF 6.3 every month in alignment with the .NET Core 3.0 previews, until we ship the final version.
.NET Framework
June 10, 2019Jun 10, 201906/10/19In part 1 of this blog series, I began the process of porting a sample WPF app to .NET Core. In that post, I described the .NET Core migration process as having four steps:
We previously went through the first two steps –
June 10, 2019Jun 10, 201906/10/19Olia recently wrote a post about how to port a WinForms app from .NET Framework to .NET Core. Today, I’d like to follow that up by walking through the steps to migrate a sample WPF app to .NET Core 3. Many of these steps will be familiar from Olia’s post,
June 7, 2019Jun 7, 201906/7/19At the Build conference in May 2019, we mentioned that, after we add WinForms, WPF and Entity Framework 6 to .NET Core 3.0, we do not plan to add any more of the technologies from .NET Framework to .NET Core.
This means we will not be adding ASP.NET Web Forms,
May 28, 2019May 28, 201905/28/19Since I’ve been working with the community on porting desktop applications from .NET Framework to .NET Core, I’ve noticed that there are two camps of folks: some want a very simple and short list of instructions to get their apps ported to .NET Core while others prefer a more principled approach with more background information.
May 14, 2019May 14, 201905/14/19Today, we are releasing the May 2019 Cumulative Update, Security and Quality Rollup, and Security Only Update.
Security
CVE-2019-0820 – Denial of Service Vulnerability
A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET application.
May 8, 2019May 8, 201905/8/19This post was written by Vicky Harp, Program Manager on SqlClient and SQL Server Tools.
Those of you who have been following .NET development closely have very likely seen Scott Hunter’s latest blog post, .NET Core is the Future of .NET.
May 6, 2019May 6, 201905/6/19We introduced .NET Core 1.0 on November 2014. The goal with .NET Core was to take the learning from our experience building, shipping and servicing .NET Framework over the previous 12 years and build a better product. Some examples of these improvements are side-by-side installations (you can install a new version and not worry about breaking existing apps),
April 19, 2019Apr 19, 201904/19/19Upcoming Updates for .NET Framework 4.8
The .NET Framework 4.8 product release is now available. The .NET Framework 4.8 product will receive updates on the same cadence and the usual channels (Windows Update, WSUS, Catalog) as all .NET Framework and Windows cumulative updates.
April 18, 2019Apr 18, 201904/18/19We are thrilled to announce the release of the .NET Framework 4.8 today. It’s included in the Windows 10 May 2019 Update. .NET Framework 4.8 is also available on Windows 7+ and Windows Server 2008 R2+.
You can install .NET 4.8 from our .NET Download site.
April 2, 2019Apr 2, 201904/2/19Today, we released the March 2019 Update for Windows 10 version 1809 and Windows Server 2019.
Quality and Reliability
This release contains the following quality and reliability improvements.
CLR
Addresses an issue in which the Framework throws an exception if the year in the parsed date is greater than or equal to the start year of the next era.
Performance
May 15, 2019May 15, 201905/15/19Take a tour through some of the many improvements, big and small, that have gone into the .NET Core 3.0 runtime and core libraries to make apps and services leaner and faster.
April 3, 2019Apr 3, 201904/3/19If you are running Windows on a machine with > 64 CPUs, you’ll need to use this feature called the CPU groups for your process to be able to use more than 64 CPUs. At some point in the far distant past,
October 9, 2018Oct 9, 201810/9/18A customer who just experienced some server outage asked us for help as they thought it was due to some very long GC pauses. I thought this diagnostics exercise might be useful for other folks as well so I am sharing it with you.
October 2, 2018Oct 2, 201810/2/18A long time ago I wrote about using Workstation GC on server applications when you have many instances of your server app running on the same machine. By default Server GC will treat the process as owning the machine so it uses all CPUs to do the GC work.
September 19, 2016Sep 19, 201609/19/16End of last year I mentioned we wanted to provide an API for you to really investigate GC/managed memory related performance called GLAD. Well, the source finally got opened source on github. So GLAD is available. The repo is called PerfView but you actually just need the TraceEvent project (but it’s much easier to just build the whole solution then add the reference to the resulting Microsoft.Diagnostics.Tracing.TraceEvent.dll).
May 31, 2016May 31, 201605/31/16I wrote this article in 2008 and the MSDN website no longer has it so I am making it available here. Please note that it has been quite a while and some things related to LOH have changed quite a bit.
Security
April 9, 2019Apr 9, 201904/9/19Today, we are releasing the .NET Core April 2019 Update. These updates contain security and reliability fixes. See the individual release notes for details on included fixes.
.NET Core 2.2.4 and .NET Core SDK 2.2.106 ( Download | Release Notes )
.NET Core 2.1.10 and .NET Core SDK 2.1.506 ( Download | Release Notes)
Security
Microsoft Security Advisory CVE-2019-0815: ASP.NET Core Denial of Service Vulnerability
A denial of service vulnerability exists in ASP.NET Core 2.2 where,
February 5, 2019Feb 5, 201902/5/19This post was written by Lena Hall, a Senior Cloud Developer Advocate at Microsoft.
F# Software Foundation has recently announced their new initiative — Applied F# Challenge! We encourage you to participate and send your submissions about F# on Azure through the participation form.
January 8, 2019Jan 8, 201901/8/19Today, we are releasing the January 2019 Security and Quality Rollup.
Security
CVE-2019-0545 – Windows Security Feature Bypass Vulnerability
This security update resolves a vulnerability in Microsoft .NET Framework that may cause an information disclosure that allows bypassing Cross-origin Resource Sharing (CORS) configurations.
December 11, 2018Dec 11, 201812/11/18Today, we are releasing the December 2018 Security and Quality Rollup.
Security
CVE-2018-8540 – Windows Remote Code Execution Vulnerability
This security update resolves a vulnerability in Microsoft .NET Framework that could allow remote code execution when Microsoft .NET Framework doesn’t validate input correctly.
November 13, 2018Nov 13, 201811/13/18Today, we are releasing the November 2018 Security and Quality Rollup.
Security
No new security fixes. See .NET Framework September 2018 Security and Quality Rollup for the latest security updates.
Quality and Reliability
This release contains the following quality and reliability improvements.
October 9, 2018Oct 9, 201810/9/18Today, we released the October 2018 Security and Quality Rollup.
Security
No new security fixes. See .NET Framework September 2018 Security and Quality Rollup for the latest security update.
Quality and Reliability
This release contains the following quality and reliability improvements.
Uncategorized
June 13, 2019Jun 13, 201906/13/19For .NET Core 3.0, we’re shipping a brand new namespace called System.Text.Json with support for a reader/writer, a document object model (DOM), and a serializer. In this blog post, I’m telling you why we built it, how it works, and how you can try it.
May 14, 2019May 14, 201905/14/19Today, we are releasing the .NET Core May 2019 Update. These updates contain security and reliability fixes. See the individual release notes for details on updated packages.
NOTE: If you are a Visual Studio user, there are MSBuild version requirements so use only the .NET Core SDK supported for each Visual Studio version.
May 6, 2019May 6, 201905/6/19We are excited to announce the release of ML.NET 1.0 today. ML.NET is a free, cross-platform and open source machine learning framework designed to bring the power of machine learning (ML) into .NET applications.
https://github.com/dotnet/machinelearning Star
Get Started @ http://dot.net/ml
ML.NET allows you to train,
May 6, 2019May 6, 201905/6/19Today, we are announcing .NET Core 3.0 Preview 5. It includes a new Json serializer, support for publishing single file executables, an update to runtime roll-forward, and changes in the BCL. If you missed it, check out the improvements we released in .NET Core 3.0 Preview 4,
May 6, 2019May 6, 201905/6/19Today, we’re announcing that the next release after .NET Core 3.0 will be .NET 5. This will be the next big release in the .NET family.
There will be just one .NET going forward, and you will be able to use it to target Windows,
April 29, 2019Apr 29, 201904/29/19DockerCon 2019 is being held this week, in San Francisco. We posted a DockerCon 2018 update last year, and it is time to share how we’ve improved the experience of using .NET and Docker together over the last year.
We have a group of .NET Core team members attending the conference again this year.
April 24, 2019Apr 24, 201904/24/19Today at Spark + AI summit we are excited to announce .NET for Apache Spark. Spark is a popular open source distributed processing engine for analytics over large data sets. Spark can be used for processing batches of data, real-time streams,
April 8, 2019Apr 8, 201904/8/19I’ve been talking about doing managed heap performance analysis with ETW events for ages because ETW is just such a powerful tool. It has a well defined format so many components, from kernel modes to user mode ones, all emit ETW events which means you can have tools that just know how to parse the event format and correlate them.
April 5, 2019Apr 5, 201904/5/19ML.NET is an open-source and cross-platform machine learning framework (Windows, Linux, macOS) for .NET developers. Using ML.NET, developers can leverage their existing tools and skillsets to develop and infuse custom AI into their applications by creating custom machine learning models for common scenarios like Sentiment Analysis,
April 2, 2019Apr 2, 201904/2/19Your friendly neighborhood .NET productivity team (aka. Roslyn) focuses a lot on improving the .NET coding experience. Sometimes it’s the little refactorings and code fixes that really improve your workflow. You may have seen many improvements in the previews, but for all of you who were eagerly awaiting the GA release here’s a few features you may enjoy!
Visual Studio
May 20, 2019May 20, 201905/20/19TL;DR We’ve moved the F# GitHub repository from microsoft/visualfsharp to dotnet/fsharp, as specified in the corresponding RFC.
F# has a somewhat strange history in its name and brand. If we roll back the clocks to the year 2015, F# sort of had two identities.
April 2, 2019Apr 2, 201904/2/19Your friendly neighborhood .NET productivity team (aka. Roslyn) focuses a lot on improving the .NET coding experience. Sometimes it’s the little refactorings and code fixes that really improve your workflow. You may have seen many improvements in the previews, but for all of you who were eagerly awaiting the GA release here’s a few features you may enjoy!
March 29, 2019Mar 29, 201903/29/19We’re excited to announce general availability of F# 4.6 and the F# tools for Visual Studio 2019! In this post, I’ll show you how to get started, explain the F# 4.6 feature set, give you an update on the F# tools for Visual Studio,
February 13, 2019Feb 13, 201902/13/19In the coming days, we’ll be moving our developer blogs to a new platform with a modern, clean design and powerful features that will make it easy for you to discover and share great content. This week, you’ll see the Visual Studio,
January 24, 2019Jan 24, 201901/24/19F# 4.6 is now fully released. See the announcement blog post for more.
We’re excited to announce that Visual Studio 2019 will ship a new version of F# when it releases: F# 4.6!
F# 4.6 is a smaller update to the F# language,
January 24, 2019Jan 24, 201901/24/19Another preview of Visual Studio 2019, another update on the cool stuff going into it!
We’re pleased to announce some updates to the .NET Core tools for Visual Studio 2019. You can try these changes out starting with Preview 2. We’d love for you to try out these new features and give us feedback.
November 13, 2018Nov 13, 201811/13/18Update! Starting with Visual Studio 2019, the option has moved to:
Tools Options Environment Preview Features
Old post for posterity:
Starting with Visual Studio 2017 version 15.9, we’ve changed how the Visual Studio tooling for .NET consumes .NET Core SDKs. Prior to this change,
August 14, 2018Aug 14, 201808/14/18Today, we’re incredibly pleased to announce general availability of F# 4.5.
This post will walk through the changes in F# 4.5 (just like the preview post), then show some updates to F# tooling, and finally talk a bit about where what we’re thinking about for the next F# version.
May 8, 2018May 8, 201805/8/18We’re excited to share updates about changes to F# and F# tools which shipped with the Visual Studio 2017 version 15.7 release. Let’s dive in!
Type Providers now support .NET Standard
For those who aren’t familiar with Type Providers, they are a feature of F# which allow you to get IntelliSense for data.
March 6, 2018Mar 6, 201803/6/18With the release of Visual Studio 2017 version 15.6, we’re excited to share updates to the F# language and core library, F# tooling in Visual Studio, and infrastructure updates that concern OSS contributors. Let’s dive in!
F# language and core library updates
Some foundational changes for the F# language and core library have been made,
WPF
June 10, 2019Jun 10, 201906/10/19In part 1 of this blog series, I began the process of porting a sample WPF app to .NET Core. In that post, I described the .NET Core migration process as having four steps:
We previously went through the first two steps –
June 10, 2019Jun 10, 201906/10/19Olia recently wrote a post about how to port a WinForms app from .NET Framework to .NET Core. Today, I’d like to follow that up by walking through the steps to migrate a sample WPF app to .NET Core 3. Many of these steps will be familiar from Olia’s post,
May 28, 2019May 28, 201905/28/19Since I’ve been working with the community on porting desktop applications from .NET Framework to .NET Core, I’ve noticed that there are two camps of folks: some want a very simple and short list of instructions to get their apps ported to .NET Core while others prefer a more principled approach with more background information.
April 18, 2019Apr 18, 201904/18/19Today, we are announcing .NET Core 3.0 Preview 4. It includes a chart control for Windows Forms, HTTP/2 support, GC updates to use less memory, support for CPU limits with Docker, the addition of PowerShell in .NET Core SDK Docker container images,
February 26, 2019Feb 26, 201902/26/19In this post, I will describe how to port a desktop application from .NET Framework to .NET Core. I picked a WinForms application as an example. Steps for WPF application are similar and I’ll describe what needs to be done different for WPF as we go.
December 10, 2018Dec 10, 201812/10/18Today, we are excited to announce that we are open sourcing XAML Behaviors for WPF.
In the past, we open sourced XAML Behaviors for UWP which has been a great success and the Behaviors NuGet package has been downloaded over 500k times.
August 8, 2018Aug 8, 201808/8/18Download Portability Analyzer (2.37 MB)
At Build 2018 we announced that we are enabling Windows desktop applications (Windows Forms and Windows Presentation Framework (WPF)) with .NET Core 3.0. You will be able to run new and existing Windows desktop applications on .NET Core and enjoy all the benefits that .NET Core has to offer,
September 21, 2017Sep 21, 201709/21/17This post describes the new WPF and accessibility features and improvements in .NET Framework 4.7.1. You can try out these features by downloading the Developer Pack, described in the Welcome to the .NET Framework 4.7.1 Early Access blog post.
Accessibility improvements
.NET Framework 4.7.1 brings in a lot of accessibility improvements across different libraries to align with the broad Microsoft product accessibility goals.
July 25, 2017Jul 25, 201707/25/17You can now install the July 2017 Quality Update for WPF. It applies to multiple Windows versions.
This update resolves known issue 4033488. It is recommended on machines that have installed the July 2017 Preview of Quality Rollup or the May 2017 Preview of Quality Rollup.
November 12, 2014Nov 12, 201411/12/14When we introduced WPF back in 2006 (.NET 3.0), the response was absolutely phenomenal. Enterprises, ISV’s, and Microsoft Partners have made the technology central to their business, building amazing vertical solutions and mission critical applications for their customers. This momentum carries forward to today – 10% of all newly created projects in Visual Studio 2013 over the past 60 days are WPF.
XAML
December 10, 2018Dec 10, 201812/10/18Today, we are excited to announce that we are open sourcing XAML Behaviors for WPF.
In the past, we open sourced XAML Behaviors for UWP which has been a great success and the Behaviors NuGet package has been downloaded over 500k times.
