dotnet/dotnet-api-docs

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.NET API reference documentation (.NET 8+)

Stars: 950
Forks: 1.7k
Open beginner issues: 98
Indexed issues: 1.6k
Avg merge: 3d 5h
Merged PRs (30d): 38

Dominant language: C#
License: No license data
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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98 beginner-friendly issues open

UriComponents.Path documentation implies LocalPath is always returned, but this is only true for file:// URIs Open

untriaged

Difficulty 1/5 Under an hour Newbie friendliness 88/100

dotnet/dotnet-api-docs#13039 · 1 comment · Opened Aug 27, 2026
DisplayAttribute string properties: Remarks incorrectly state the property performs resource lookup Open

area-System.ComponentModel.DataAnnotations untriaged

Difficulty 1/5 1-3 hours Newbie friendliness 88/100

dotnet/dotnet-api-docs#13023 · 1 comment · Opened Aug 23, 2026
No "Read" method found on UdpClient Open

area-System.Net.Sockets untriaged

Difficulty 1/5 Under an hour Newbie friendliness 88/100

dotnet/dotnet-api-docs#13022 · 1 comment · Opened Aug 22, 2026
Is memory load bytes a count of bytes or a ratio Open

area-System.Runtime untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

dotnet/dotnet-api-docs#13015 · 1 comment · Opened Aug 20, 2026
Confusing terminology in SafeHandle example code Open

area-System.Runtime.InteropServices untriaged

Difficulty 1/5 Under an hour Newbie friendliness 84/100

dotnet/dotnet-api-docs#12959 · Opened Aug 8, 2026
Confusing "implement a Close method" Open

area-System.Runtime untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

dotnet/dotnet-api-docs#12957 · 1 comment · Opened Aug 8, 2026
Misinformation on multi-threaded behavior Open

area-System.Runtime untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

dotnet/dotnet-api-docs#12900 · 1 comment · Opened Jul 23, 2026
WebSocket.CloseStatus: Actual value is null when socket is open, not non-existent WebSocketCloseStatus.None Open

area-System.Net untriaged

Difficulty 1/5 Under an hour Newbie friendliness 85/100

dotnet/dotnet-api-docs#12884 · 1 comment · Opened Jul 16, 2026
CollectionBuilderAttribute.MethodName remarks contradict CollectionBuilderAttribute(Type, String) Constructor remarks Open

area-System.Runtime.CompilerServices untriaged

Difficulty 1/5 Under an hour Newbie friendliness 85/100

dotnet/dotnet-api-docs#12883 · Opened Jul 14, 2026
Missing warning note on HttpUtility.UrlEncode()? Open

area-System.Net untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

dotnet/dotnet-api-docs#12813 · 3 comments · Opened Jun 26, 2026
`ArrayList` incorrect remarks Open

area-System.Collections untriaged

Difficulty 1/5 Under an hour Newbie friendliness 78/100

dotnet/dotnet-api-docs#12797 · 1 comment · Opened Jun 25, 2026
Document behaviour of ConcurrentDictionary AddOrUpdate when factory funcs throw Open

area-System.Collections untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

dotnet/dotnet-api-docs#12771 · 1 comment · Opened Jun 22, 2026
`SocketsHttpHandler` need more detailed docs Open

area-System.Net.Http untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

dotnet/dotnet-api-docs#12768 · 1 comment · Opened Jun 21, 2026
Incomplete description for Task.Wait(TimeSpan, CancellationToken) Open

area-System.Threading.Tasks untriaged

Difficulty 1/5 Under an hour Newbie friendliness 90/100

dotnet/dotnet-api-docs#12759 · 1 comment · Opened Jun 18, 2026
IPNetwork remark about lower bits is different for net10.0 Open

area-System.Net untriaged

Difficulty 1/5 1-3 hours Newbie friendliness 78/100

dotnet/dotnet-api-docs#12731 · 1 comment · Opened Jun 10, 2026
ChannelFactory does not have string parameter overload in modern .NET Open

area-WCF needs-area-label untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

dotnet/dotnet-api-docs#12725 · Opened Jun 8, 2026
System.Printing.PrintQueueStatus enum value "NotAvailable" doc is misleading/incorrect Open

area-WinForms needs-area-label untriaged

Difficulty 1/5 Under an hour Newbie friendliness 68/100

dotnet/dotnet-api-docs#12723 · 2 comments · 1 reaction · Opened Jun 8, 2026
Race condition in the example Open

area-System.Threading needs-area-label untriaged

Difficulty 1/5 Under an hour Newbie friendliness 86/100

dotnet/dotnet-api-docs#12721 · Opened Jun 7, 2026
WebSocketReceiveResult.MessageType: Document that type can also be "close" Open

area-System.Net.Sockets untriaged

Difficulty 1/5 Under an hour Newbie friendliness 88/100

dotnet/dotnet-api-docs#12717 · 1 comment · Opened Jun 5, 2026
Document which HttpClient methods are thread-safe, on class page and individual method pages Open

area-System.Net untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

dotnet/dotnet-api-docs#12711 · 1 comment · Opened Jun 4, 2026
ValueTask<TResult> documentation is outdated for .NET 10 - repeated await no longer throws Open

area-System.Threading.Tasks untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

dotnet/dotnet-api-docs#12704 · 3 comments · Opened Jun 3, 2026
ValidationException(ValidationResult, ValidationAttribute, Object): Incorrect parameter description for "validationResult" Open

area-System.ComponentModel.DataAnnotations untriaged

Difficulty 1/5 Under an hour Newbie friendliness 85/100

dotnet/dotnet-api-docs#12693 · 1 comment · Opened Jun 1, 2026
Several errors in ValidationException(String, Exception) constructor Open

area-System.ComponentModel.DataAnnotations untriaged

Difficulty 1/5 Under an hour Newbie friendliness 88/100

dotnet/dotnet-api-docs#12692 · 1 comment · Opened Jun 1, 2026
Include information about known issues in `Expression.Block` documentation. Open

area-System.Linq.Expressions untriaged

Difficulty 2/5 Half a day Newbie friendliness 65/100

dotnet/dotnet-api-docs#12691 · 1 comment · Opened Jun 1, 2026
Broken Link Open

area-System.Collections untriaged

Difficulty 1/5 Under an hour Newbie friendliness 72/100

dotnet/dotnet-api-docs#12673 · 1 comment · Opened May 28, 2026
Threre are issues in the class PerformanceCounter Open

area-System.Diagnostics.PerformanceCounter needs-area-label untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

dotnet/dotnet-api-docs#12667 · Opened May 28, 2026
Misleading remarks about degree of parallelism Open

area-System.Threading.Tasks untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

dotnet/dotnet-api-docs#12637 · 3 comments · Opened May 21, 2026
OrdereredDictionary<K,V> and the KeyNotFoundException Open

area-System.Collections untriaged

Difficulty 1/5 Under an hour Newbie friendliness 88/100

dotnet/dotnet-api-docs#12621 · 1 comment · Opened May 13, 2026
Host.CreateDefaultBuilder should specify that on windows it adds the EventLog Provider Open

area-Extensions-Hosting untriaged

Difficulty 1/5 1-3 hours Newbie friendliness 72/100

dotnet/dotnet-api-docs#12600 · 1 comment · Opened May 6, 2026
This method is not safe? Open

area-System.IO untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

dotnet/dotnet-api-docs#12558 · 2 comments · Opened Apr 26, 2026
System.Web.WebExceptionStatus is marked forInternalUseOnly Open

area-System.Web needs-area-label untriaged

Difficulty 1/5 Under an hour Newbie friendliness 85/100

dotnet/dotnet-api-docs#12533 · Opened Apr 17, 2026
IProcessHostPreloadClient works on all versions of IIS Open

area-System.Web needs-area-label untriaged

Difficulty 1/5 Under an hour Newbie friendliness 85/100

dotnet/dotnet-api-docs#12510 · Opened Apr 13, 2026
Add clarity regarding whether the leading-dot notation in `NO_PROXY` matches only one subdomain or multiple Open

area-System.Net.Http untriaged

Difficulty 1/5 1-3 hours Newbie friendliness 72/100

dotnet/dotnet-api-docs#12504 · 1 comment · Opened Apr 9, 2026
OpenExeConfiguration works with dll.config Open

area-System.Configuration untriaged

Difficulty 1/5 Under an hour Newbie friendliness 85/100

dotnet/dotnet-api-docs#12477 · 1 comment · Opened Apr 1, 2026
Detail whether `FileVersionInfo.GetVersionInfo()` supports relative paths Open

area-System.Diagnostics untriaged

Difficulty 1/5 Under an hour Newbie friendliness 72/100

dotnet/dotnet-api-docs#12475 · 1 comment · Opened Apr 1, 2026
InlineArray: Make clear that the field replicated must be an instance field Open

area-System.Runtime untriaged

Difficulty 1/5 Under an hour Newbie friendliness 78/100

dotnet/dotnet-api-docs#12458 · 1 comment · Opened Mar 30, 2026
Documentation of HtmlEncoder.EncodeUtf8 fails to mention that OperationStatus.InvalidData is *never* returned. Open

area-System.Text.Encodings.Web

Difficulty 1/5 Under an hour Newbie friendliness 75/100

dotnet/dotnet-api-docs#12454 · 6 comments · Opened Mar 27, 2026
Clarify documentation about DataReceivedEventHandler and DataReceivedEventArgs.Data Open

area-System.Diagnostics untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

dotnet/dotnet-api-docs#12429 · 1 comment · Opened Mar 23, 2026
OrderedDictionary page says nothing (!) about ordering Open

area-System.Collections untriaged

Difficulty 1/5 Under an hour Newbie friendliness 84/100

dotnet/dotnet-api-docs#12416 · 3 comments · Opened Mar 18, 2026
Add clarification that FileInfo.MoveTo modifies its FullName to point to the new file Open

area-System.IO untriaged

Difficulty 1/5 1-3 hours Newbie friendliness 70/100

dotnet/dotnet-api-docs#12399 · 2 comments · Opened Mar 14, 2026
Add hint that Export might be required Open

area-System.Security untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

dotnet/dotnet-api-docs#12374 · 1 comment · Opened Mar 6, 2026
First example results in a null reference exception if really used with an empty sequence Open

area-System.Linq untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

dotnet/dotnet-api-docs#12278 · 1 comment · Opened Feb 2, 2026
Exceptions sections for the versions that take a TimeSpan appear to have been copy-pasted from the versions that take Int32 Open

area-System.Threading untriaged

Difficulty 1/5 Under an hour Newbie friendliness 68/100

dotnet/dotnet-api-docs#12276 · Opened Feb 1, 2026
ZipArchive documentation still mentions 2GB limit in Update mode Open

area-System.IO.Compression untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

dotnet/dotnet-api-docs#12167 · 1 comment · Opened Dec 23, 2025
`Array.ConstrainedCopy` explanation is misleading and has incorrect exception specifications Open

area-System.Runtime untriaged

Difficulty 1/5 1-3 hours Newbie friendliness 65/100

dotnet/dotnet-api-docs#12139 · 2 comments · Opened Dec 13, 2025
Provide explicit info on SymLink handling Open

area-System.IO untriaged

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

dotnet/dotnet-api-docs#11902 · 1 comment · Opened Oct 6, 2025
Incorrect statement in BigInteger.Pow(BigInteger, Int32) remarks Open

area-System.Numerics untriaged

Difficulty 1/5 Under an hour Newbie friendliness 65/100

dotnet/dotnet-api-docs#11815 · 1 comment · Opened Sep 16, 2025
RegexOptions.ECMAScript information is incomplete and outdated Open

area-System.Text.RegularExpressions help wanted

Difficulty 1/5 Under an hour Newbie friendliness 84/100

dotnet/dotnet-api-docs#11793 · 2 comments · Opened Sep 10, 2025
Fix sequence and wording of Rate Limiter in HttpStandardResilienceOptions Open

area-Extensions-HttpClientFactory untriaged

Difficulty 1/5 Under an hour Newbie friendliness 72/100

dotnet/dotnet-api-docs#11760 · 1 comment · Opened Sep 3, 2025
Confusing Function Definition for Enumerable.Prepend<TSource>(IEnumerable<TSource>, TSource) Method Open

area-System.Linq untriaged

Difficulty 1/5 Under an hour Newbie friendliness 72/100

dotnet/dotnet-api-docs#11745 · 1 comment · Opened Aug 29, 2025

dotnet/dotnet-api-docs

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