This post shows how to use shared projects or shared assemblies for ASP.NET Core API Controllers or ASP.NET Core Razor Pages. Sometimes shared logic for different ASP.NET Web API or Web App projects can be implemented in a shared project. The shared project controllers, Razor Pages, services can be referenced and used in the host […]

This article shows how a legacy API could be protected using an ASP.NET Core Yarp reverse proxy and Azure AD OAuth. The security is implemented using Azure AD and Microsoft.Identity.Web. Sometimes it is not possible to update an existing or old API within a reasonable price and the financially best way to use it in […]

This article shows how the lifespan of access tokens can be set and managed in Azure AD using ASP.NET Core Razor pages with Microsoft Graph API and token lifetime policies. A TokenLifetimePolicy can be created for the whole tenant or used for specific Azure App Registrations. Code: Azure AD Token Management Posts in this series […]

The post shows how to create a Blazor application which is hosted in an ASP.NET Core application and provides a public API which uses multiple downstream APIs. Both the Blazor client and the Blazor API are protected by Azure AD authentication. The Blazor UI Client is protected like any single page application. This is a […]

This article shows how an Angular application could be used to access many APIs in a secure way. An API is created specifically for the Angular UI and the further APIs can only be access from the trusted backend which is under our control. Code: https://github.com/damienbod/AzureADAuthRazorUiServiceApiCertificate Posts in this series Implement Azure AD Client credentials […]

This post shows how an ASP.NET Core API can authorize API calls which use different access tokens from different identity providers or different access tokens from the same identity provider but created for different clients and containing different claims. The access tokens are validated using JWT Bearer authentication as well as an authorization policy which […]

This post shows how Microsoft Graph API can be used in both ASP.NET Core UI web applications and also ASP.NET Core APIs for delegated identity flows. The ASP.NET Core applications are secured using Microsoft.Identity.Web. In the API project, the Graph API client is used in a delegated flow with user access tokens getting an access […]

This article shows how an ASP.NET Core Web application can authenticate and access a downstream API using user access tokens and delegate to another API in Azure AD also using user access tokens. Microsoft.Identity.Web is used in all three applications to acquire the tokens for the Web API and the access tokens for the two […]

This article shows how to implement a full text search in Blazor using Azure Cognitive Search. The search results are returned using paging and the search index can be created, deleted from a Blazor application. Code: https://github.com/damienbod/AspNetCoreAzureSearch Posts in this series Implement a full text search using Azure Cognitive Search in ASP.NET Core Using Azure […]

This post shows how to implement an autocomplete in an ASP.NET Core Razor Page using Azure Cognitive Search Suggesters. Code: https://github.com/damienbod/AspNetCoreAzureSearch Posts in this series Implement a full text search using Azure Cognitive Search in ASP.NET Core Using Azure Cognitive Search Suggesters in ASP.NET Core and Autocomplete Implement a Blazor full text search using Azure […]