Web Services

No connection could be made because the target machine actively refused it

Error: An unhandled exception occurred while processing the request. SocketException: No connection could be made because the target machine actively refused it. System.Net.Http.ConnectHelper.ConnectAsync(string host, int port, CancellationToken cancellationToken) HttpRequestException: No connection could be made because the target machine actively refused it. System.Net.Http.ConnectHelper.ConnectAsync(string host, int port, CancellationToken cancellationToken) Fix: In solutions with both web api and... » read more

Blazor CORS Error

Error: Get the following error when trying to access api call from external sites. Access to fetch at xxxx from origin xxxx has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. If an opaque response serves your needs, set the request’s mode to ‘no-cors’ to fetch the resource with... » read more

.NET Web API

Resources: https://dotnet.microsoft.com/apps/aspnet/apis

Test Web API using Postman App

https://www.postman.com/downloads/

.NET Web API Tutorial

Sources: https://docs.microsoft.com/en-us/aspnet/core/tutorials/first-web-api?view=aspnetcore-5.0&tabs=visual-studio

Call a web API from ASP.NET Core Blazor

Access ASP.NET Web API from Blazor razor page. Sources: https://docs.microsoft.com/en-us/aspnet/core/blazor/call-web-api?view=aspnetcore-5.0

Blazor client-side and WCF

Core does not support WCF very well instead of not at all. Especially in terms of authentication and security, such as the service created by using WS* binding.  I suggest you re-construct your server project with BasicHttpBinding or using Asp.net WebAPI to create the backend service. WCF is not supported in .NET Core out of... » read more

WCF vs Web API

What is WCF? WCF stands for Windows Communication Foundation. It is used to create a distributed and interoperable Applications. WCF is an effective platform for developing service-oriented applications. It allows developers to create secure, reliable, and high profile development solutions which can be integrated across platforms and interoperate with existing investments. What is Web API?... » read more

REST API and HTTP Verbs

Docker

Docker is a set of platform as a service products that uses OS-level virtualization to deliver software in packages called containers. Containers are isolated from one another and bundle their own software, libraries and configuration files; they can communicate with each other through well-defined channels.