The document describes how to perform CRUD operations on a Student table using Entity Framework and ASP.NET Core. It defines a Student model with properties for id, name, roll number and class. Controllers are created to read all students, create, update and delete a student. Views are created to display a form to create a student and display a list of students.

1. Create methods to insert, update, delete and read all data for the table Student having following fields
StudentId(int), Name varchar(200),RollNo (int), Class varchar(50) using Entity Framework.
DbcontextandModel ispre declared,predefined.
Dbcontext_context;
StudentController(Dbcontextcontext){
_context=context;
}
Read
[HttpGet]
public Task<IActionResult>Index(){
returnView( _context.Student.ToList ());
}
Create
[HttpPost]
Public Task<IActionResult> Create(Studentstudent){
_context.Student.Add(newStudent{
StudentId=student.StudentId,
Name=student.Name,
RollNo=student.RollNo,
Class=student.Class
);
_context.SaveChanges ();
returnRedirectToAction(nameof(Index));
}
Update
Public Task<IActionResult>Update(intid,Student student){
If(id!=student.studentId){

2. ReturnNotFound();
}
_context.Student.Update(newStudent{
StudentId=student.StudentId,
Name=student.Name,
RollNo=student.RollNo,
Class=student.Class
});
_context.SaveChanges ();
returnRedirectToAction(nameof(Index));
}
Delete
Public Task<IActionResult>Delete(intid){
Var student= _context.Student.Find (id);
_context.Student.Remove(student);
_context.SaveChanges ();
returnRedirectToAction(nameof(Index));
}
Write a program for Addinginone ASPpage and to displayinanother.
Create
@model ProductListingMVC.Models.Products
<h1>Create</h1>
<h4>Products</h4>
<hr />
<formasp-action="Create">
<div asp-validation-summary="ModelOnly"class="text-danger"></div>

3. <divclass="form-group">
<label asp-for="Name"class="control-label"></label>
<inputasp-for="Name"class="form-control"/>
<span asp-validation-for="Name"class="text-danger"></span>
</div>
<divclass="form-group">
<label asp-for="RollNo"class="control-label"></label>
<inputasp-for=" RollNo"class="form-control"/>
<span asp-validation-for="RollNo"class="text-danger"></span>
</div>
<divclass="form-group">
<label asp-for="Class"class="control-label"></label>
<inputasp-for="Class"class="form-control"/>
<span asp-validation-for="Class"class="text-danger"></span>
</div>
<divclass="form-group">
<inputtype="submit"value="Create"class="btnbtn-primary"/>
</div>
</form>
<div>
<a asp-action="Index">BacktoList</a>
</div>
Display
@model IEnumerable<StudentProj.Models.Students>

4. <h1>Index</h1>
<table class="table">
<thead>
<tr>
<th>
@Html.DisplayNameFor(model =>model.Name)
</th>
<th>
@Html.DisplayNameFor(model =>model.RollNo)
</th>
<th>
@Html.DisplayNameFor(model =>model.Class)
</th>
<th></th>
</tr>
</thead>
<tbody>
@foreach(var iteminModel) {
<tr>
<td>
@Html.DisplayFor(modelItem=>item.Name)
</td>
<td>
@Html.DisplayFor(modelItem=>item.RollNo)
</td>
<td>
@Html.DisplayFor(modelItem=>item.Class)
</td>

5. </tr>
}
</tbody>
</table>
Create class to showcase constructor,properties, indexers and encapsulation behavior of object oriented
language.
public class Student
{
private char[] Name = new char[50];
public Student(string name)
{
int i = 0;
foreach(var character in name)
{
Name[i] = character;
i++;
}
}
}
//main
Student student=new Student(“Ram”);