private void DeleteStudent_Click(object sender, EventArgs e)
{
int index = StudentsDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
int studentId = Convert.ToInt32(StudentsDataGridView.Rows[index].Cells["StudentId"].Value);
using (StudentsManagerContext db = new StudentsManagerContext())
{
Student student = db.Students.Find(studentId);
db.Students.Remove(student);
db.SaveChanges();
}
MessageBox.Show("Student record is deleted from the system.", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
// Reload data into DataGridView ...
LoadDataIntoDataGridView();
}
private void SaveRecordButton_Click(object sender, EventArgs e)
{
Student student = new Student();
student.StudentId = StudentId;
student.FullName = FullNameTextBox.Text;
student.Email = EmailTextBox.Text;
student.Mobile = MobileTextBox.Text;
student.Phone = PhoneTextBox.Text;
student.Gender = GetGender();
student.CSharp = CSharpCheckBox.Checked;
student.VBNET = VBNETCheckBox.Checked;
student.HTML = HtmlCheckBox.Checked;
student.Photoshop = PhotoshopCheckBox.Checked;
student.Notes = NotesTextBox.Text;
if (!this.IsUpdate)
{
using (StudentsManagerContext db = new StudentsManagerContext())
{
db.Students.Add(student);
db.SaveChanges();
}
MessageBox.Show("Student record is added to the system.", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
using (StudentsManagerContext db = new StudentsManagerContext())
{
db.Entry(student).State = System.Data.Entity.EntityState.Modified;
db.SaveChanges();
MessageBox.Show("Student record is updated.", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
this.Close();
}
public void Add(TEntity obj)
{
_context.Set <TEntity>().Add(obj);
_context.SaveChanges();
}