.NET Custom Middleware to display a webpage/form

Question

I am trying to figure out how I can create my own middleware, to provide a Form or Webpage.

It should be usable like HangFire or NSwager and it should work for .NET Core WebApp and WebApi projects:

app.UseHangfireDashboard(); app.UseSwaggerUi3();

So in my case i would like to use it like:

app.UseMyDashboard();

What it needs to do:

Provide an endpoint (/myDashboard)
This page contains a simple form
Submit the form and execute some code

How do I do something like that ? Do I need to create a separate project for this? Because I want to reuse this in any other projects, meaning I want to pack this in a NuGet package and make it available for internal use.

Deepak Mishra · Accepted Answer · 2020-04-28 12:10:50Z

I will provide you a brief answer to start with, you can go through the documentation https://learn.microsoft.com/en-us/aspnet/core/fundamentals/middleware/?view=aspnetcore-3.1 for detais. To call app.UseMyDashboard(); from startup class you would need to create an extension method:

using Microsoft.AspNetCore.Builder; using Microsoft.AspNetCore.Http; namespace YourNamespace { public static class MiddleWareExtension { public static void UseMyDashboard(this IApplicationBuilder app) { // 1. Provide an endpoint(/ myDashboard) app.Map("/myDashboard", app => app.Run(async (context) => { //2. This page contains a simple form, Submit the form to redirect to another form await context.Response.WriteAsync("<button onclick=\"window.location.href = '/path'; \">Click me</button>"); })); //3. Another Form app.Map("/path", app => app.Run(async (context) => await context.Response.WriteAsync("<b>New Form</b>"))); } } }

possible to have the HTML in a file and a separate project ?

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