private void Back_Click(object sender, EventArgs e)
{
TeacherDetails obj = new TeacherDetails();
obj.Show();
this.Hide();
}
public void Button1_Click(object sender, EventArgs e)
{
if (textBox1.Text != null)
{
AutoincIDTeachr++;
var storeData = store.Where(i => i.Id == ia).FirstOrDefault();
store.Remove(storeData);
Teacher columns = new Teacher();
columns.Name = textBox1.Text;
columns.Id = AutoincIDTeachr;
columns.Department = textBox3.Text;
columns.Subject = textBox4.Text;
store.Add(columns);
EmptyBox();
TeacherDetails obj = new TeacherDetails();
obj.Show();
ia = 0;
}
this.Hide();
}