NET Core command-line interface (dotnet-cli) is a new NET Core toolset (commands) for developing NET Core Applications. The dotnet-cli toolset provides a list of pre-installed dotnet core project templates from which the user can create various applications as ASP.NET Core MVC Web Application, WPF (Windows Presentation Foundation) application, console application, Windows Form application, and other test projects. The application created with dotnet-cli can be executed on any Windows, Linux, or macOS operating system.
How to create an “ASP.NET Core MVC Web Application”
The user can use the dotnet new “ASP.NET Core Web App (Model-View-Controller)” or the short-form “dotnet new mvc” command from the dotnet-CLI toolset to create a new Core MVC Web Application. The command creates the basic MVC application. The user can also create a Web application with Angular, React, etc, from the list of available templates. You can check the installed templates by using the dotnet new –list command. The command provides a few options that can be applied as a parameter to tweak the output of the command as shown below :
“dotnet new mvc –no-restore”: This command does not restore the project dependencies required by the MVC Web application. Please follow through to read about a few “dotnet new mvc” command usage.
Prerequisite:
NET Core SDK 1.x and above. The current version is .NET Core 5.0 and can be downloaded here.
Command Syntax:
The format of the command is as follows: dotnet new mvc [options]
The details of the available command options can be listed using the –help option as follows:
c:\>dotnet new mvc --help
Usage: new [options]
Options:
-h, --help Displays help for this command.
-l, --list Lists templates containing the specified name. If no name is specified, lists all templates.
-n, --name The name for the output being created. If no name is specified, the name of the current directory is used.
-o, --output Location to place the generated output.
-i, --install Installs a source or a template pack.
-u, --uninstall Uninstalls a source or a template pack.
--nuget-source Specifies a NuGet source to use during install.
--type Filters templates based on available types. Predefined values are "project", "item" or "other".
--dry-run Displays a summary of what would happen if the given command line were run if it would result in a template creation.
--force Forces content to be generated even if it would change existing files.
-lang, --language Filters templates based on language and specifies the language of the template to create.
ASP.NET Core Web App (Model-View-Controller) (C#)
Author: Microsoft
Description: A project template for creating an ASP.NET Core application with example ASP.NET Core MVC Views and Controllers. This template can also be used for RESTful HTTP services.
This template contains technologies from parties other than Microsoft, see https://aka.ms/aspnetcore-template-3pn-210 for details.
Options:
-au|--auth The type of authentication to use
None - No authentication
Individual - Individual authentication
IndividualB2C - Individual authentication with Azure AD B2C
SingleOrg - Organizational authentication for a single tenant
MultiOrg - Organizational authentication for multiple tenants
Windows - Windows authentication
Default: None
--aad-b2c-instance The Azure Active Directory B2C instance to connect to (use with IndividualB2C auth).
string - Optional
Default: https://login.microsoftonline.com/tfp/
-ssp|--susi-policy-id The sign-in and sign-up policy ID for this project (use with IndividualB2C auth).
string - Optional
-rp|--reset-password-policy-id The reset password policy ID for this project (use with IndividualB2C auth).
string - Optional
-ep|--edit-profile-policy-id The edit profile policy ID for this project (use with IndividualB2C auth).
string - Optional
--aad-instance The Azure Active Directory instance to connect to (use with SingleOrg or MultiOrg auth).
string - Optional
Default: https://login.microsoftonline.com/
--client-id The Client ID for this project (use with IndividualB2C, SingleOrg or MultiOrg auth).
string - Optional
Default: 11111111-1111-1111-11111111111111111
--domain The domain for the directory tenant (use with SingleOrg or IndividualB2C auth).
string - Optional
Default: qualified.domain.name
--tenant-id The TenantId ID of the directory to connect to (use with SingleOrg auth).
string - Optional
Default: 22222222-2222-2222-2222-222222222222
--callback-path The request path within the application's base path of the redirect URI (use with SingleOrg or IndividualB2C auth).
string - Optional
Default: /signin-oidc
-r|--org-read-access Whether or not to allow this application read access to the directory (only applies to SingleOrg or MultiOrg auth).
bool - Optional
Default: false / (*) true
--exclude-launch-settings Whether to exclude launchSettings.json from the generated template.
bool - Optional
Default: false / (*) true
--no-https Whether to turn off HTTPS. This option only applies if Individual, IndividualB2C, SingleOrg, or MultiOrg aren't used for --auth.
bool - Optional
Default: false / (*) true
-uld|--use-local-db Whether to use LocalDB instead of SQLite. This option only applies if --auth Individual or --auth IndividualB2C is specified.
bool - Optional
Default: false / (*) true
--no-restore If specified, skips the automatic restore of the project on create.
bool - Optional
Default: false / (*) true
* Indicates the value used if the switch is provided without a value. Command Usage – dotnet new mvc:
1. “dotnet new mvc”
The command creates a new “ASP.NET Core MVC Web Application”, the application contains basic boilerplate files and directory. The name of the project is not specified in the command, so by default, the name of the project will be taken from the name of the folder the command has been executed in. The command also restores the dependencies required by the web project. As the default language is C#, a C# ASP.NET MVC project will be created.
The MVC application created is ready to use, on executing the command “dotnet run”, the application will be hosted on local IIS Express server and the same will be listening on the following ports: http://localhost:5000 and https://localhost:5001, details are as follows:
c:\Temp>dotnet new mvc The template "ASP.NET Core Web App (Model-View-Controller)" was created successfully. This template contains technologies from parties other than Microsoft, see https://aka.ms/aspnetcore-template-3pn-210 for details. Processing post-creation actions... Running 'dotnet restore' on c:\Temp\Temp.csproj... Restore completed in 99.35 ms for c:\Temp\Temp.csproj. Restore succeeded.
The list of the files and folders created:
c:\Temp>dir Volume in drive C is OSDisk Volume Serial Number is 8053-FAC8 Directory of c:\Temp 07/04/2019 07:56 PM <DIR> . 07/04/2019 07:56 PM <DIR> .. 07/04/2019 07:56 PM 146 appsettings.Development.json 07/04/2019 07:56 PM 192 appsettings.json 07/04/2019 07:56 PM <DIR> Controllers 07/04/2019 07:56 PM <DIR> Models 07/04/2019 07:56 PM <DIR> obj 07/04/2019 07:56 PM 712 Program.cs 07/04/2019 07:56 PM <DIR> Properties 07/04/2019 07:56 PM 2,230 Startup.cs 07/04/2019 07:56 PM 183 Temp.csproj 07/04/2019 07:56 PM <DIR> Views 07/04/2019 07:56 PM <DIR> wwwroot
The content of the Startup.cs file
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
namespace Temp
{
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.Configure<CookiePolicyOptions>(options =>
{
// This lambda determines whether user consent for non-essential cookies is needed for a given request.
options.CheckConsentNeeded = context => true;
});
services.AddControllersWithViews();
services.AddRazorPages();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseCookiePolicy();
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
endpoints.MapRazorPages();
});
}
}
} 2. “dotnet new mvc –name MVCWebApplication”
The command creates a directory name MVCWebApplication if already not exists and then creates a new “MVC Web Application” with the name of MVCWebApplication in it, additionally, the command also restores the dependencies required by the project. The list of files and directories created by the command are given below:
c:\>dotnet new mvc --name MVCWebApplication The template "ASP.NET Core Web App (Model-View-Controller)" was created successfully. This template contains technologies from parties other than Microsoft, see https://aka.ms/aspnetcore-template-3pn-210 for details. Processing post-creation actions... Running 'dotnet restore' on MVCWebApplication\MVCWebApplication.csproj... Restore completed in 69.46 ms for c:\MVCWebApplication\MVCWebApplication.csproj. Restore succeeded.
The list of files and folder created:
c:\MVCWebApplication>dir Volume in drive C is OSDisk Volume Serial Number is 8053-FAC8 Directory of c:\MVCWebApplication 07/04/2019 08:01 PM <DIR> . 07/04/2019 08:01 PM <DIR> .. 07/04/2019 08:01 PM 146 appsettings.Development.json 07/04/2019 08:01 PM 192 appsettings.json 07/04/2019 08:01 PM <DIR> Controllers 07/04/2019 08:01 PM <DIR> Models 07/04/2019 08:01 PM 183 MVCWebApplication.csproj 07/04/2019 08:01 PM <DIR> obj 07/04/2019 08:01 PM 725 Program.cs 07/04/2019 08:01 PM <DIR> Properties 07/04/2019 08:01 PM 2,243 Startup.cs 07/04/2019 08:01 PM <DIR> Views 07/04/2019 08:01 PM <DIR> wwwroot
3. “dotnet new mvc –name FirstWebApplication –no-restore”
The command creates a directory name MVCWebApplication if already not exists and then creates a new “MVC Web Application” in it, additionally, the command does not restore the dependencies required by the project. The list of files and directories created by the command are given below:
c:\>dotnet new mvc --name MVCWebApplication --no-restore The template "ASP.NET Core Web App (Model-View-Controller)" was created successfully. This template contains technologies from parties other than Microsoft, see https://aka.ms/aspnetcore-template-3pn-210 for details.
The list of files and folder created
c:\MVCWebApplication>dir Volume in drive C is OSDisk Volume Serial Number is 8053-FAC8 Directory of c:\MVCWebApplication 07/04/2019 08:04 PM <DIR> . 07/04/2019 08:04 PM <DIR> .. 07/04/2019 08:04 PM 146 appsettings.Development.json 07/04/2019 08:04 PM 192 appsettings.json 07/04/2019 08:04 PM <DIR> Controllers 07/04/2019 08:04 PM <DIR> Models 07/04/2019 08:04 PM 183 MVCWebApplication.csproj 07/04/2019 08:04 PM 725 Program.cs 07/04/2019 08:04 PM <DIR> Properties 07/04/2019 08:04 PM 2,243 Startup.cs 07/04/2019 08:04 PM <DIR> Views 07/04/2019 08:04 PM <DIR> wwwroot
4. “dotnet new mvc –name MVCWebApplication –language F#”
The command creates a directory name FirstWebApplication if already not exists and then creates a new MVC Web Application in it, the programming language for the application is F#, and the extension of the project is .fsproj. Additionally, the command also restores the dependencies required for the project. The list of the files and folder created are given below:
c:\>dotnet new mvc --name MVCWebApplication --language F# The template "ASP.NET Core Web App (Model-View-Controller)" was created successfully. This template contains technologies from parties other than Microsoft, see https://aka.ms/aspnetcore-template-3pn-210 for details. Processing post-creation actions... Running 'dotnet restore' on MVCWebApplication\MVCWebApplication.fsproj... Restore completed in 8.79 sec for c:\MVCWebApplication\MVCWebApplication.fsproj. Restore succeeded.
The list of files and folders created:
c:\MVCWebApplication>dir Volume in drive C is OSDisk Volume Serial Number is 8053-FAC8 Directory of c:\MVCWebApplication 07/04/2019 08:07 PM <DIR> . 07/04/2019 08:07 PM <DIR> .. 07/04/2019 08:07 PM 146 appsettings.Development.json 07/04/2019 08:07 PM 157 appsettings.json 07/04/2019 08:07 PM <DIR> Controllers 07/04/2019 08:07 PM <DIR> Models 07/04/2019 08:07 PM 518 MVCWebApplication.fsproj 07/04/2019 08:07 PM <DIR> obj 07/04/2019 08:07 PM 674 Program.fs 07/04/2019 08:07 PM <DIR> Properties 07/04/2019 08:07 PM 1,905 Startup.fs 07/04/2019 08:07 PM <DIR> Views 07/04/2019 08:07 PM <DIR> wwwroot
The content of Startup.fs
namespace MVCWebApplication
open System
open System.Collections.Generic
open System.Linq
open System.Threading.Tasks
open Microsoft.AspNetCore.Builder
open Microsoft.AspNetCore.Hosting
open Microsoft.AspNetCore.HttpsPolicy;
open Microsoft.AspNetCore.Mvc
open Microsoft.Extensions.Configuration open Microsoft.Extensions.DependencyInjection
open Microsoft.Extensions.Hosting
type Startup private () =
new (configuration: IConfiguration) as this =
Startup() then
this.Configuration <- configuration
// This method gets called by the runtime. Use this method to add services to the container.
member this.ConfigureServices(services: IServiceCollection) =
// Add framework services.
services.AddControllersWithViews().AddRazorRuntimeCompilation() |> ignore
services.AddRazorPages() |> ignore
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
member this.Configure(app: IApplicationBuilder, env: IWebHostEnvironment) =
if (env.IsDevelopment()) then
app.UseDeveloperExceptionPage() |> ignore
else
app.UseExceptionHandler("/Home/Error") |> ignore
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts() |> ignore
app.UseHttpsRedirection() |> ignore
app.UseStaticFiles() |> ignore
app.UseRouting() |> ignore
app.UseAuthorization() |> ignore
app.UseEndpoints(fun endpoints ->
endpoints.MapControllerRoute(
name = "default",
pattern = "{controller=Home}/{action=Index}/{id?}") |> ignore
endpoints.MapRazorPages() |> ignore) |> ignore
member val Configuration : IConfiguration = null with get, set 5. “dotnet new mvc –name MVCWebApplication –no-https”
The command creates a directory name MVCWebApplication only if it does not exists and then creates a new MVC Web Application in it, additionally, the command restores the dependencies required by the project. With –no-https option the command does not assign SSL Port number and neither assigns an https application URL in the launchSettings.json, by default –no-https is false. The content of launchSettings.json with and without –no-https is given below.
a. With –no-https option:
{
"iisSettings": {
"windowsAuthentication": false,
"anonymousAuthentication": true,
"iisExpress": {
"applicationUrl": "http://localhost:38196",
"sslPort": 0
}
},
"profiles": {
"IIS Express": {
"commandName": "IISExpress",
"launchBrowser": true,
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
"MVCWebApplication": {
"commandName": "Project",
"launchBrowser": true,
"applicationUrl": "http://localhost:5000",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
}
}
} b. With default option: –no-https (false)
{
"iisSettings": {
"windowsAuthentication": false,
"anonymousAuthentication": true,
"iisExpress": {
"applicationUrl": "http://localhost:5253",
"sslPort": 44300
}
},
"profiles": {
"IIS Express": {
"commandName": "IISExpress",
"launchBrowser": true,
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
"MVCWebApplication": {
"commandName": "Project",
"launchBrowser": true,
"applicationUrl": "https://localhost:5001;http://localhost:5000",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
}
}
} Download the latest version of NET Core or refer MSDN for further details
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