private void btnaddclass_Click(object sender, EventArgs e)
{
if (listclassc.Count() != 0)
{
foreach (ClassC classroomC in listclassc)
{
if (classroomC.Malop == txtclassid.Text)
{
MessageBox.Show("This id is already exist!!");
return;
}
}
}
ClassC classC = new ClassC();
classC.Malop = txtclassid.Text;
classC.Khoa = txtsyear.Text;
classC.HeDaoTao = txtcertificate.Text;
listclassc.AddLast(classC);
lvwclassroom.Items.Add(classC.Malop);
int i = lvwclassroom.Items.Count - 1;
lvwclassroom.Items[i].SubItems.Add(classC.Khoa);
lvwclassroom.Items[i].SubItems.Add(classC.HeDaoTao);
studenthashtable.Add(classC.Malop, new LinkedList <Student>());
}
private void btndeleteclass_Click(object sender, EventArgs e)
{
if (MessageBox.Show("Do you want to delete? Yes/No", "Delete", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
for (int i = listclassc.Count - 1; i >= 0; i--)
{
ClassC classroomC = listclassc.ElementAt(i);
var classidselected = lvwclassroom.SelectedItems[0].Text;
if (classroomC.Malop == classidselected)
{
lvwclassroom.Items.Remove(lvwclassroom.SelectedItems[0]);
listclassc.Remove(classroomC);
lvwaddstudent.Items.Clear();
break;
}
}
}
}
private void btneditclass_Click(object sender, EventArgs e)
{
if (MessageBox.Show("Do you want to edit? Yes/No", "Edit", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
for (int i = listclassc.Count - 1; i >= 0; i--)
{
ClassC classroomC = listclassc.ElementAt(i);
var temp = lvwclassroom.SelectedItems[0].Text;
if (classroomC.Malop == temp)
{
ClassC classC = new ClassC();
classC.Malop = txtclassid.Text;
classC.Khoa = txtsyear.Text;
classC.HeDaoTao = txtcertificate.Text;
int j = i;
lvwclassroom.Items[j].Text = txtclassid.Text;
lvwclassroom.Items[j].SubItems[1].Text = txtsyear.Text;
lvwclassroom.Items[j].SubItems[2].Text = txtcertificate.Text;
}
}
}
}