protected void Btn_Save_Click(object sender, EventArgs e)
 {
     DataEntities ent = new DataEntities();
     int id = 0;
     try
     {
         id = Spe_Tree.SelectedNode.Value.ToInt32(0);
     }
     catch
     {
     }
     if (chk_Edit.Checked)
     {
         var q = (from l in ent.JobIndustry where l.ID == id select l).FirstOrDefault();
         q.Name = txt_Name.Text;
     }
     else
     {
         JobIndustry spe = new JobIndustry();
         spe.ParentID = id;
         spe.Name = txt_Name.Text;
         ent.AddToJobIndustry(spe);
     }
     ent.SaveChanges();
     ent.Dispose();
     Spe_Tree.Nodes.Clear();
     LoadTree();
 }