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ASP.NET Core 1 (formerly ASP.NET 5)What has changed for MVC and Web API devs?
Manfred Steyer
ManfredSteyer
About me …
Manfred Steyer
SOFTWAREarchitekt.at
Trainer & Consultant
Angular
Server-Side .NET
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2
Goal
Overview of changes for
MVC- and Web API-Devs regarding
ASP.NET Core
Folie 3
Didactics
Slides
Samples
Folie 9
3
Contents
Overview of ASP.NET Core 1
Bootstrapping
Web Apps
Web APIs
Folie 11
OVERVIEW OF ASP.NET CORE
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4
.NET Core
Folie 24
[http://www.hanselman.com/]
Advantages
Folie 25
X-Plattform Lightweight NuGet
Side-by-Side
Self-HostingF5-Compile-to-Memory
5
Hosting
Kestrel (X-Plattform, Self-Host)
WebListener (Windows, Self-Host)
IIS Kestrel
Nginx Kestrel
Folie 26
Why a new ASP.NET?
Folie 27
ASP.NET Frameworks
System.Web
IIS
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System.Web
Features of System.Web have to be
reimplemented
Sessions, Caching, Configuration, Routing
Consequence: Breaking-Changes
Folie 30
Doublings today
Web API MVC Web Pages
7
ASP.NET MVC Core 1
Unification of MVC, Web API
and (in future) Web Pages
Uniform concepts for Controllers, Views,
Dependency-Injection, Routing, Filters etc.
Migration
Code needs adaptation
But: Current framework-versions will be maintained
Saying that: WCF and Web Forms wont't be
migrated to Core
WCF Web Forms Web API 2MVC 5
.NET 4.x / "Full CLR"
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ASP.NET CORE 1:BOOTSTRAPPING
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Middleware-Components
Folie 35
Se
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We
b-F
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ork
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Mid
dle
ware
1
Mid
dle
ware
2
Mid
dle
ware
…
Mid
dle
ware
n
Request
Response
Host-Process
HTTP
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Configuring the Pipeline
Folie 36
public class Startup{
[…]
public void Configure(IApplicationBuilder app) {
[…]app.UseStaticFiles();app.UseMvc();[…]
}}
Configuration considering the Environment
Folie 37
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{[…]
if (env.IsDevelopment()) {app.UseDeveloperExceptionPage();
}else {
app.UseExceptionHandler("/Home/Error");}
[…]}
10
Configuring Services
Folie 38
public class Startup{
public void ConfigureServices(IServiceCollection services){
[…]services.AddMvc()[…]
}
[…]}
DEMO
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TAG-HELPER
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@model IEnumerable<MvcApplication.Models.Flight>
[…]
@foreach (var item in Model) {<tr>
<td>@item.Von
</td><td>
@item.Nach</td><td>
@Html.ActionLink("Edit", "Edit", "Home", new { id = "1" }, null)
</td></tr>
}
HtmlHelpers in ASP.NET MVC 5
12
@model IEnumerable<MvcApplication.Models.Flight>
[…]
@foreach (var item in Model) {<tr>
<td>@item.Von
</td><td>
@item.Nach</td><td>
<a asp-controller="Home"asp-action="Edit"asp-route-id="1" class="navbar-brand">Edit</a>
</td></tr>
}
Tag-Helpers
Using TagHelpers
@addTagHelper "*, Microsoft.AspNetCore.Mvc.TagHelpers"
Global: Views/_ViewImports.cshtml
Folie 48
13
WEB APIS WITH MVC CORE 1
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Web APIs in MVC Core 1
No own Routing for Web APIs
Same concept as for MVC
No Conventions for HTTP Verb,
like GetAll() GET, PostData() POST
Routing doesn't consider URL-Parameters to select
an action-method
But: WebApiCompatShim
Folie 51
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Web API with Attribute-based Routes
Folie 52
[Route("api/[controller]")]public class FlightController: Controller{
[HttpGet("{id}")]public Flight GetById(int id) { […] }
[HttpGet("byRoute")]public List<Flight> GetByRoute(string from, string to) { […] }
[HttpPost]public void PostFlight([FromBody] Flight flight) { […] }
}
Web API with Attribute-based Routes
Folie 53
[Route("api/[controller]")]public class FlightController: Controller{
// GET api/flight/{id}[HttpGet("{id}")]public Flight GetById(int id) { […] }
[HttpGet("byRoute")]public List<Flight> GetByRoute(string from, string to) { […] }
[HttpPost]public void PostFlight([FromBody] Flight flight) { […] }
}
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Web API with Attribute-based Routes
Folie 54
[Route("api/[controller]")]public class FlightController: Controller{
// GET api/flight/{id}[HttpGet("{id}")]public Flight GetById(int id) { […] }
// GET api/flight/byRoute?from=...&to=...[HttpGet("byRoute")]public List<Flight> GetByRoute(string from, string to) { […] }
[HttpPost]public void PostFlight([FromBody] Flight flight) { […] }
}
Web API with Attribute-based Routes
Folie 55
[Route("api/[controller]")]public class FlightController: Controller{
// GET api/flight/{id}[HttpGet("{id}")]public Flight GetById(int id) { […] }
// GET api/flight/byRoute?from=...&to=...[HttpGet("byRoute")]public List<Flight> GetByRoute(string from, string to) { […] }
// POST api/flight[HttpPost]public void PostFlight([FromBody] Flight flight) { […] }
}
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DEMO
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Configuring MVC and Formatters
Folie 57
public class Startup{
public void ConfigureServices(IServiceCollection services){
services.AddMvc().AddJsonOptions(options => { […] }).AddMvcOptions(options => { […] });
}
[…]}
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XML-Formatter
Package:
Microsoft.AspNetCore.Mvc.Formatters.Xml
XmlDataContractSerializerInputFormatter
XmlDataContractSerializerOutputFormatter
Folie 58
DEMO
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Summary
Folie 80
X-Plattform F5-Compile Side-by-Side
Self-HostingDI, DI
everywhere…Tag Helpers
Summary
Folie 81
Unificationof MVC and
Web API
High-Level-APIs quitethe same
MVC-Style Routing
Low-Level APIs
reworked
Currentversions still maintained
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