OData/WebApi

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OData Web API: A server library built upon ODataLib and WebApi

Stars: 864
Forks: 467
Open beginner issues: 0
Indexed issues: 605

Dominant language: C#
License: No license data
Last GitHub push: Jul 28, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: hacktoberfest
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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605 open issues indexed

Cannot upgrade Microsoft.AspNet.WebApi.Core from 5.2.9 to 5.3.0 Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

OData/WebApi#2897 · Opened Jun 4, 2026
Cookie encoding issue in ODataBatchReaderExtensions.cs Open

follow up

OData/WebApi#2894 · 1 assignee · Opened Dec 16, 2025
Cannot expand navigation property from entity collection returned from function import. Open

OData/WebApi#2890 · 1 comment · 1 reaction · 2 assignees · Opened Nov 18, 2025
Support nullable (alternate) keys in ODataPathQueryBuilder Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

OData/WebApi#2888 · 2 comments · Opened Nov 5, 2025
How to posting payload with long OData query parameters (>1024 chars) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

OData/WebApi#2887 · 1 comment · Opened Oct 29, 2025
Please update your dependencies - warnings for vulnerable dependencies as well as downgraded assemblies Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

OData/WebApi#2884 · Opened Oct 10, 2025
Using Skip Token Handlers independently Open

follow up

OData/WebApi#2875 · 1 comment · 1 assignee · Opened Jun 18, 2025
odata.context doesn't include group prefix Open

OData/WebApi#2873 · 1 comment · 1 assignee · Opened Apr 3, 2025
How to add a dynamic property to my OData response which lives outside the Entity Type and is not included in the EDM Model? Open

follow up

OData/WebApi#2854 · 6 comments · 1 assignee · Opened Aug 31, 2024
FromODataUriAttribute binds string property as number Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

OData/WebApi#2852 · 2 comments · Opened Aug 20, 2024
OData response with custom ODataOutputFormatter Open

follow up

OData/WebApi#2843 · 2 comments · 1 assignee · Opened Jun 18, 2024
Invalid JSON when using List<List<?>> property Open

OData/WebApi#2837 · 2 comments · 1 assignee · Opened Apr 4, 2024
InvalidOperationException thrown from CreateRequestContainer cause performance issue Open

investigating

OData/WebApi#2832 · 9 comments · 2 assignees · Opened Feb 2, 2024
[Microsoft.AspNet.OData v7.7.3] Request.ODataProperties().NextLink is always null Open

investigating

OData/WebApi#2826 · 1 assignee · Opened Dec 14, 2023
JsonIgnore with condition incorrectly ignoring property when using OData $select query with [EnableQuery] endpoint Open

feature P3

Difficulty 4/5 3-5 days Newbie friendliness 42/100

OData/WebApi#2825 · 2 comments · Opened Dec 1, 2023
Odata MongoDb lt filtering Open

investigating

OData/WebApi#2820 · 3 comments · 2 assignees · Opened Nov 9, 2023
Make the query validator thread-safe since the validator is singleton Open

OData/WebApi#2817 · 1 assignee · Opened Nov 7, 2023
The property '{propertyname}' cannot be used in the $expand query option Open

OData/WebApi#2815 · 6 comments · 1 assignee · Opened Nov 6, 2023
OData $filter=contains and NullReferenceExceptions in LINQ to SQL Open

follow up

OData/WebApi#2808 · 2 comments · 1 assignee · Opened Sep 22, 2023
Modernizing the Build System Open

infrastructure

OData/WebApi#2777 · 2 comments · 2 assignees · Opened Apr 27, 2023
Aggregate on DateTime property throws exception Open

bug

OData/WebApi#2776 · 1 comment · 1 assignee · Opened Apr 20, 2023
Implement support for IAsyncEnumerable Open

feature P3

Difficulty 5/5 Over a week Newbie friendliness 25/100

OData/WebApi#2775 · 4 comments · 2 reactions · Opened Apr 19, 2023
How to unmap a previously mapped OData service route completely Open

feature P3

OData/WebApi#2773 · 1 comment · 1 assignee · Opened Apr 13, 2023
Validation message is not informative in case of deserialization error. Open

feature P3

OData/WebApi#2768 · 1 comment · 1 assignee · Opened Apr 4, 2023
Microsoft.AspNet.OData Package 7.6.5 is misconfigured Open

bug P2

OData/WebApi#2767 · 3 comments · 2 reactions · 1 assignee · Opened Apr 3, 2023
Add Example of Serialization/Deserialization for CSV Open

fixed

OData/WebApi#2749 · 3 comments · 1 assignee · Opened Feb 13, 2023
Dynamic properties with DerivesFrom is not working Open

investigating

OData/WebApi#2747 · 2 comments · 1 reaction · 1 assignee · Opened Feb 11, 2023
Cast Edm.String to Edm.Int32 in a lambda expresion in a $filter Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OData/WebApi#2746 · 3 comments · Opened Feb 6, 2023
GetEdmModel Performance Issue Open

P3 Performance

OData/WebApi#2743 · 7 comments · 1 assignee · Opened Jan 4, 2023
Instance property 'Values' is not defined for type 'System.Object' (Parameter 'propertyName') Open

OData/WebApi#2742 · 3 comments · 1 assignee · Opened Jan 3, 2023
Microsoft.AspNet.OData version 7.5.12 and higher throwing ModelBinding.ModelError -- Value cannot be null.\r\nParameter name: nullableType Open

follow up

OData/WebApi#2735 · 1 assignee · Opened Dec 5, 2022
In memory filtering after ODataQueryOptions.ApplyTo() Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

OData/WebApi#2732 · 1 comment · Opened Dec 1, 2022
Expand causes serialization to ignore JsonConverterAttribute Open

investigating

OData/WebApi#2730 · 1 comment · 1 assignee · Opened Nov 29, 2022
IgnoreDataMember only when entity in expand Open

feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

OData/WebApi#2723 · 1 comment · 1 reaction · Opened Nov 3, 2022
"ContinueOnError" access modifier is set as internal instead of protected in ODataBatchHandler Open

feature P3

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

OData/WebApi#2717 · 3 comments · Opened Oct 26, 2022
ActionDescriptor for OData Controller with optional parameters not selected Open

bug

OData/WebApi#2712 · 1 assignee · Opened Oct 17, 2022
Change next page link position in response stream if odata.streaming=false Open

OData/WebApi#2711 · 2 comments · 1 assignee · Opened Oct 17, 2022
Merge delta logic with regular logic; requires common base between ODataWriter and ODataDeltaWriter. Open

backlog

OData/WebApi#2710 · 1 assignee · Opened Oct 17, 2022
Add support to write Navigation Links, etc. using Delta Writer Open

backlog

OData/WebApi#2709 · 1 assignee · Opened Oct 17, 2022
Some tests fail when run in full test suite (succeed individually) Open

improvement infrastructure P3

OData/WebApi#2708 · 1 comment · 1 assignee · Opened Oct 12, 2022
ODataActionPayloadDeserializer failed to deserialize action parameter when it's a 2d array Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OData/WebApi#2706 · 4 comments · Opened Sep 28, 2022
Return 200 when exception is thrown from get method in model Open

follow up

OData/WebApi#2704 · 4 reactions · 1 assignee · Opened Sep 1, 2022
authorization middleware checking access to each segment Open

feature

OData/WebApi#2695 · 1 comment · 1 assignee · Opened Aug 2, 2022
Unable to read DateTimeOffset type from ODataQueryOptions when ODataQuerySettings.EnableConstantParameterization = false Open

bug

OData/WebApi#2690 · 3 comments · 1 assignee · Opened Jul 18, 2022
UTF-8 BOM is added to raw value response when running on ASP .NET Core 3+ Open

bug

OData/WebApi#2685 · 1 assignee · Opened Jul 14, 2022
Error while trying to set deltaLink with no skipToken Open

follow up

OData/WebApi#2684 · 2 comments · 1 assignee · Opened Jul 13, 2022
Batch with Authentication Open

investigating

OData/WebApi#2671 · 2 comments · 1 assignee · Opened Jul 4, 2022
How to add "@odata.deltaLink" in the response using ASP.NET Web API solution Open

follow up

OData/WebApi#2670 · 1 assignee · Opened Jul 1, 2022
Returning a ComplexType with a NavigationProperty from a function Open

feature

Difficulty 4/5 3-5 days Newbie friendliness 38/100

OData/WebApi#2669 · 1 comment · Opened Jun 23, 2022
Support relative date filter query Open

follow up

OData/WebApi#2654 · 3 comments · 1 reaction · 1 assignee · Opened Jun 6, 2022

OData/WebApi

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