//
 private async void bunifuThinButton2_Click(object sender, EventArgs e)
 {
     foreach (ListViewItem i in listView1.SelectedItems) //Remove the selected item from the list.
     {
         if (i.Tag is User)
         {
             User u = (User)i.Tag;
             if (await ApiWrapper.RemoveStudentFromClass(classObj.Id, u.Id)) //If criteria is met, update will also apply to the backend too
             {
                 listView1.Items.Remove(i);                                  //Remove that selected Tagged student.
             }
         }
     }
 }
 //Removing students from a Class.
 private async void removeButton_Click(object sender, EventArgs e)
 {
     foreach (ListViewItem i in listView1.SelectedItems) //Remove the selected item from the list.
     {
         if (i.Tag is User)
         {
             User u = (User)i.Tag;
             if (await ApiWrapper.RemoveStudentFromClass(classObj.Id, u.Id)) //Update the database, so change has been applied serverside.
             {
                 listView1.Items.Remove(i);
             }
         }
     }
 }