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Welcome to the Bot Framework SDK for .NET repository, which is the home for the libraries and packages that enable developers to build sophisticated bot applications using .NET.
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.github Set up a stale issues github action (#2974) Nov 15, 2019
.vscode Switch to portable pdb files in order to support debugging in Visual … Oct 1, 2019
FunctionalTests QnAMakerRecognizer (new InputRecognizer model) (#3174) Dec 22, 2019
build Add PR conditionals for publish to Github PR (#3202) Jan 9, 2020
doc [Docs] fix Explanation (#2997) Nov 26, 2019
libraries Add <PrivateAssets>all</PrivateAssets> to all project references to S… Jan 16, 2020
recognizers-text/Utterance Changes Add minor changes Sep 27, 2019
schemas Make Ask.ExpectedProperties support both an explicit array of propert… Jan 8, 2020
specs Whitespace change to force CI build Jan 25, 2019
tests Add <PrivateAssets>all</PrivateAssets> to all project references to S… Jan 16, 2020
.editorconfig QnAMakerRecognizer (new InputRecognizer model) (#3174) Dec 22, 2019
.gitattributes Add .gitattributes file Jul 26, 2018
.gitignore RegExRecognizer refactor and fix for Capture groups (#3196) Jan 7, 2020
BotBuilder-DotNet.ruleset Updated interfaces documentation and excluded UriParametersShouldNotB… Nov 21, 2019 change to start <= line <= end (#3078) Dec 20, 2019
CodeCoverage.runsettings loose LG grammar (#3116) Dec 10, 2019
Directory.Build.props RegExRecognizer refactor and fix for Capture groups (#3196) Jan 7, 2020
LICENSE Touched the file to force rebuild Jun 28, 2019
Microsoft.Bot.Builder.sln Profiling tool for running test scripts. (#3243) Jan 10, 2020 Update Readme to reflect that master is now 4.8.x-preview Dec 9, 2019 emit Error event and handle with OnError (#3073) Dec 14, 2019
_config.yml Set theme jekyll-theme-cayman Mar 30, 2018
bot.png Move Rules folder => Events folder Jul 17, 2019
bot_icon.png Move Rules folder => Events folder Jul 17, 2019
installbf.cmd installbf.cmd brought over from 4.Future branch. Aug 23, 2019

Bot Framework for dotnet

Click here to find out what's new with Bot Framework

Bot Framework SDK v4 for .NET

This repository contains code for the .NET version of the Microsoft Bot Framework SDK. The Bot Framework SDK v4 enable developers to model conversation and build sophisticated bot applications using .NET.

This repo is part of the Microsoft Bot Framework - a comprehensive framework for building enterprise-grade conversational AI experiences.

Branch Description Build Status Coverage Status Windows Bot Test Status Linux Bot Test Status
Master 4.8.* Preview Builds Build Status Coverage Status Tests status Tests status

License Gitter


In addition to the .NET SDK, Bot Builder supports creating bots in other popular programming languages like JavaScript, Python (Preview), and Java (Preview).

To get started see the Azure Bot Service Documentation for the v4 SDK.

The Bot Framework Samples includes a rich set of samples repository.


Name Released Package Daily Build
Microsoft.Bot.Builder BotBuilder Badge BotBuilder Badge
Microsoft.Bot.Builder.AI.LUIS BotBuilder Badge BotBuilder Badge
Microsoft.Bot.Builder.AI.QnA BotBuilder Badge BotBuilder Badge
Microsoft.Bot.Builder.Azure BotBuilder Badge BotBuilder Badge
Microsoft.Bot.Builder.Dialogs BotBuilder Badge BotBuilder Badge
Microsoft.Bot.Builder.TemplateManager BotBuilder Badge BotBuilder Badge
Microsoft.Bot.Builder.Integration.ApplicationInsights.Core BotBuilder Badge BotBuilder Badge
Microsoft.Bot.Builder.Integration.ApplicationInsights.WebApi BotBuilder Badge BotBuilder Badge
Microsoft.Bot.Configuration BotBuilder Badge BotBuilder Badge
Microsoft.Bot.Connector BotBuilder Badge BotBuilder Badge
Microsoft.Bot.Schema BotBuilder Badge BotBuilder Badge

To use the daily builds, which are published to MyGet, please follow the instructions here.


This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit When you submit a pull request, a CLA-bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA. This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact with any additional questions or comments.

Reporting Security Issues

Security issues and bugs should be reported privately, via email, to the Microsoft Security Response Center (MSRC) at You should receive a response within 24 hours. If for some reason you do not, please follow up via email to ensure we received your original message. Further information, including the MSRC PGP key, can be found in the Security TechCenter.

Copyright (c) Microsoft Corporation. All rights reserved.

Licensed under the MIT License.

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