Angular with Asp.Net Core Full Stack

This tutorial will teach you how to make Crud Application using Asp.net Core Entity Framework with Angular Frontend application and Sql Server Database using Api access Crud application.this tutorial explains the Code First approach.

Install the required Dependencies

Microsoft.EntityFrameworkCore.Design
Microsoft.EntityFrameworkCore.SqlServer
Microsoft.EntityFrameworkCore.Tools
Newtonsoft.Json

First Step Select the Model Folder Right Click and Create the Class Student.cs

Student.cs

[Key]
public int id { get; set; }
public string stname { get; set; }
public string course { get; set;

StudentDbContext

using Microsoft.EntityFrameworkCore;

namespace ReactAspCrud.Models
{
    public class StudentDbContext : DbContext
    {
        public StudentDbContext(DbContextOptions<StudentDbContext> options) : base(options)
        {
        }
        public DbSet<Student> Student { get;set; }

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            optionsBuilder.UseSqlServer("Data Source=.; Initial Catalog=lbs; User Id=sa; password=123; TrustServerCertificate= True");
        }
    }
}

Program.cs

Add these Context inside the Program.cs file

Establish the Database Connection

builder.Services.AddDbContext<StudentDbContext>(options =>
options.UseSqlServer(builder.Configuration.GetConnectionString(“StudentDbContext”)));

Connect the WebApi for Allow the Permissions

app.UseCors(policy => policy.AllowAnyHeader()
.AllowAnyMethod()
.SetIsOriginAllowed(origin => true)
.AllowCredentials());

I attached the full code of Program.cs file where you going paste the above code.

using Microsoft.EntityFrameworkCore;
using ReactAspCrud.Models;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();


builder.Services.AddDbContext<StudentDbContext>(options =>
   options.UseSqlServer(builder.Configuration.GetConnectionString("StudentDbContext")));

var app = builder.Build();
app.UseCors(policy => policy.AllowAnyHeader()
                            .AllowAnyMethod()
                            .SetIsOriginAllowed(origin => true)
                            .AllowCredentials());

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}
app.UseHttpsRedirection();
app.UseAuthorization();
app.MapControllers();
app.Run();

appsettings.json

Paste the ConnectionStrings

"AllowedHosts": "*",
  "ConnectionStrings": {
    "StudentDbContext": "Server=.;Database=lbs;Trusted_Connection=True;MultipleActiveResultSets=true"
  }

After that Go to Tools->NuGet Package Manager->Package Manager Console

then you can get the console . you have add-migration initial

PM>add-migration initial

then migration files has been created.

after that you have run the command as

update-database

now your database has been created you just open the sqlserver and check them database has created or not at the same time migration folder has been created in your project you can see that.

After that Select the Controller Folder Create the new Controller as Student Controller with Web Api

Student Controller

using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using ReactAspCrud.Models;

namespace ReactAspCrud.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class StudentController : ControllerBase
    {
        private readonly StudentDbContext _studentDbContext;

        public StudentController(StudentDbContext studentDbContext)
        {
            _studentDbContext = studentDbContext;
        }

        [HttpGet]
        [Route("GetStudent")]
        public async Task<IEnumerable<Student>> GetStudents()
        {
            return await _studentDbContext.Student.ToListAsync();
        }

        [HttpPost]
        [Route("AddStudent")]
        public async Task<Student> AddStudent(Student objStudent)
        {
            _studentDbContext.Student.Add(objStudent);
            await _studentDbContext.SaveChangesAsync();
            return objStudent;
        }

        [HttpPatch]
        [Route("UpdateStudent/{id}")]
        public async Task<Student> UpdateStudent(Student objStudent)
        {
            _studentDbContext.Entry(objStudent).State= EntityState.Modified;
            await _studentDbContext.SaveChangesAsync();
            return objStudent;
        }

        [HttpDelete]
        [Route("DeleteStudent/{id}")]
        public bool DeleteStudent(int id) 
        {
            bool a = false;
            var student = _studentDbContext.Student.Find(id);
            if (student != null)
            {
                a = true;
                _studentDbContext.Entry(student).State= EntityState.Deleted;
                _studentDbContext.SaveChanges();
            }
            else
            {
                a = false;
            }
            return a;

        }

    }

}

After that you can check through the swagger.

Angular

Angular is a front-end application we have already created the folder front end inside the folder open the command prompt and type the commands.

Installing Angular CLI

npm install -g @angular/cli

After that create the new Project of Angular running by the following command

ng new frond-end

Select the SCSS Style for the Advanced CSS and Press Enter Key.

After complete the installation then run the project using following command.

ng serve

it will generate the url link to run the angular application.paste the url in to the browser

Now you see the Angular Welcome Page.

After that open the Angular project into VS code editor.

now you can see the following file structure

Creating a new Component Student Crud

ng g c customer

After that install the Bootstrap by typing the following command

npm i bootstrap

After installed you have to set the path in to style.scss file

@import "~bootstrap/dist/css/bootstrap.css";

app.module.ts

FormModule
HttpClientModule

import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { BrowserModule } from '@angular/platform-browser';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { CustomerComponent } from './customer/customer.component';
import { HttpClientModule } from '@angular/common/http';

@NgModule({
  declarations: [
    AppComponent,
    CustomerComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    FormsModule,
    HttpClientModule

  
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

add these module into the app.module.ts file then only we will manage the forms and Http requests

studentcrud.component.html

<div class="container mt-4" >
    <div class="card">
            <h1>Student Registation</h1>
    
    <form>
        <div class="form-group">
          <label>Student Name</label>
          <input type="text" [(ngModel)]="stname" [ngModelOptions]="{standalone: true}" class="form-control" id="stname" placeholder="Enter Name">
        </div>
    
        <div class="form-group">
          <label>Course</label>
          <input type="text" [(ngModel)]="course" [ngModelOptions]="{standalone: true}" class="form-control" id="course" placeholder="Enter Name">
        </div>
    
        <button type="submit" class="btn btn-primary mt-4" (click)="save()" >Save</button>
       
      </form>
    </div>

        <div class="container mt-4" >
            <h1>Student Table</h1>
        <table class="table">
            <thead>
             <h1 *ngIf="!isResultLoaded">Loading.................</h1>      
            <tr>
                <th scope="col">ID</th>
                <th scope="col">Student Name</th>
                <th scope="col">Course</th>  
              </tr>
            </thead>
            <tbody>
                <tr *ngFor="let StudentItem of StudentArray">
                    <td>{{StudentItem.id  }}</td>
                <td>{{StudentItem.stname }}</td>
                <td>{{StudentItem.course }}</td>
                <td>
                  <button type="button" class="btn btn-success" (click)="setUpdate(StudentItem)">Edit</button>
                  <button type="button" class="btn btn-danger" (click)="setDelete(StudentItem)">Delete</button>            
                </td>
              </tr>          
            </tbody>
          </table>
        </div>

studentcrud.component.ts

import { HttpClient } from '@angular/common/http';
import { Component } from '@angular/core';

@Component({
  selector: 'app-studentcrud',
  templateUrl: './studentcrud.component.html',
  styleUrls: ['./studentcrud.component.scss']
})
export class StudentcrudComponent {
  StudentArray : any[] = [];
  isResultLoaded = false;
  isUpdateFormActive = false;

  stname: string ="";
  course: string ="";
 
  currentStudentID = "";

  constructor(private http: HttpClient ) 
  {
    this.getAllStudent();
  }

  ngOnInit(): void {
  }

  getAllStudent()
  { 
    this.http.get("https://localhost:7195/api/Student/GetStudent")
    .subscribe((resultData: any)=>
    {
        this.isResultLoaded = true;
        console.log(resultData);
        this.StudentArray = resultData;
    });
  }

  register()
  {
   // this.isLogin = false; 
   // alert("hi");
    let bodyData = {
      "stname" : this.stname,
      "course" : this.course,
    
    };

    this.http.post("https://localhost:7195/api/Student/AddStudent",bodyData).subscribe((resultData: any)=>
    {
        console.log(resultData);
        alert("Student Registered Successfully")
        this.getAllStudent();
      //  this.name = '';
      //  this.address = '';
      //  this.mobile  = 0;
    });
  }

  setUpdate(data: any) 
  {
   this.stname = data.stname;
   this.course = data.course;
   

   this.currentStudentID = data.id;
 
  }

  UpdateRecords()
  {
    let bodyData = 
    {
      "stname" : this.stname,
      "course" : this.course,
    };
    
    this.http.patch("https://localhost:7195/api/Student/UpdateStudent"+ "/"+ this.currentStudentID,bodyData).subscribe((resultData: any)=>
    {
        console.log(resultData);
        alert("Student Registered Updateddd")
        this.getAllStudent();
      
    });
  }
 
  save()
  {
    if(this.currentStudentID == '')
    {
        this.register();
    }
      else
      {
       this.UpdateRecords();
      }       

  }


  setDelete(data: any)
  {
    this.http.delete("https://localhost:7195/api/Student/DeleteStudent"+ "/"+ data.id).subscribe((resultData: any)=>
    {
        console.log(resultData);
        alert("Student Deletedddd")
        this.getAllStudent();
    });
  }
}