.NET Core 3.1 and lower
Following code is designed for Azure Functions running on .NET Core 3.1 (or lower). Just create a file
HtmlObjectResult.cs and return new class instance as result of your Azure Function.
What about .NET 5
In .NET 5 a guide above will not work. In fact, in .NET 5 (Azure Functions in isolated process) you don’t need any custom code, a Function has during runtime easy access to
HttpRequestData object, so you can easily create a response like this: