public bool Add(Student students)
{
using (StudentMgtSystemEntities context = new StudentMgtSystemEntities())
{
try
{
context.Students.Add(students);
context.SaveChanges();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return(false);
}
}
return(true);
}
public bool Delete(int id)
{
using (StudentMgtSystemEntities context = new StudentMgtSystemEntities())
{
try
{
var s1 = context.Students.FirstOrDefault(u => u.StudentId == id);
context.Entry(s1).State = EntityState.Deleted;
context.SaveChanges();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return(false);
}
}
return(true);
}
public bool Update(Student students)
{
using (StudentMgtSystemEntities context = new StudentMgtSystemEntities())
{
try
{
context.Students.Attach(students);
context.Entry(students).State = EntityState.Modified;
context.SaveChanges();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return(false);
}
}
return(true);
}
