Sam Xu, Author at OData

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$compute and $search in ASP.NET Core OData 8

January 11th, 2022

Introduction OData system query options, such as $filter, $orderby, are a set of query string parameters that control the amount and order of the data returned for the resource identified by the URL. In the latest version of ASP.NET Core OData, two new system query options as follows are enabled: Along with other query options, $...

Build formatter extensions in ASP.NET Core OData 8 and hooks in ODataConnectedService

August 23rd, 2021

Introduction In this post, I will create formatter extensions in an OData web service and request/response hooks in an OData client application to generate/consume ETag control information. ETag (aka entity tag), one of OData control information that may be applied to an entity or collection in response, can be used in a subsequent request to...

API versioning extension with ASP.NET Core OData 8

July 9th, 2021

Introduction API versioning can help evolving our APIs without changing or breaking the existing API services. URL segment, request header, and query string are three ways to achieve API versioning in ASP.NET Core application. ASP.NET Core OData 8, built upon ASP.NET Core, has the built-in API versioning functionality via route URL prefix ...

Attribute Routing in ASP.NET Core OData 8.0 RC

April 7th, 2021

Introduction Attribute routing is how Web API matches the incoming HTTP requests to an action based on route template attributes decorated on controller or action. ASP.NET Core defines a set of route template attributes to enable attribute routing, such as RouteAttribute, HttpGetAttribute etc. ASP.NET Core OData 8.0 RC supports these ...

Routing in ASP.NET Core OData 8.0 Preview

November 2nd, 2020

Introduction In the previous version of ASP.NET Core OData, such as 6.x and 7.x version, the OData routing is IRouter-based Web API Routing, that is, OData router is a Router implementing IRouter interface. Even in the ASP.NET Core OData 7.x Endpoint Routing, it is also related to the IRouter routing. Since 8.0, we want to build the OData ...

ASP.NET Core OData 8.0 Preview for .NET 5

October 19th, 2020

Recently, OData team released the 8.0.0 preview version of ASP.NET Core OData on nuget.org. It is the first version of OData supporting .NET 5, especially for ASP.NET Core 5. This version includes some breaking changes, such as model builder separation, namespace changes and configuration changes etc. Most importantly, the routing mechanism is...

OData Model Builder now Available

April 30th, 2020

How to empower developers to build OData Edm model easily from their data model (C# classes) is one of the most important task in OData team. Today, we are pleased to announce the first beta version of OData model builder available at https://www.nuget.org/packages/Microsoft.OData.ModelBuilder. Please try this package by installing as: ...

Move OData to .NET 5

April 6th, 2020

Introduction Along with the Announcing .NET 5 preview 1, it’s time to move OData to .NET 5. This blog is intended to describe how easy to move the BookStore sample introduced in ASP.NET Core OData now Available onto .NET 5. Let's get started. Install .NET 5 .NET 5 SDK is required to build the .NET 5 application. So, Let’s follow ...

$select Enhancement in ASP.NET Core OData

December 30th, 2019

The release of ASP.NET Core OData v7.3 brings a ton of improvements to $select functionality. In this article, I’d like to introduce some of the new features of $select and its usages in combination with other query options like $filter, $top, $skip, $orderby, $count and $expand. This tutorial assumes that you already have the knowledge to ...

ASP.NET Core OData now Available

July 3rd, 2018

Introduction The Microsoft OData Team is proud to announce general availability (GA) of OData (Open OData Protocol) on ASP.NET Core 2.0. It is now available through Nuget package at https://www.nuget.org/packages/Microsoft.AspNetCore.OData, current its version is 7.0.0. Along this release, it will allow customers to create OData v4.0 ...

Sam Xu

Senior Software Engineer, OData, Microsoft Graph, Open API, Swagger