protected void Unnamed2_Click(object sender, EventArgs e)
 {
     string userNameStr=Tools.safeUserInput(TextBox1.Text.ToString().Trim());
     string passWordStr = Tools.safeUserInput(TextBox2.Text.ToString().Trim());
     if(userNameStr.Length<1){
     MessageBox.Show(this,"用户名不能为空!");
         return;
     }
     if(passWordStr.Length<1){
     MessageBox.Show(this,"密码不能为空!");
         return;
     }
     administratorBLL AdminBLL = new administratorBLL();
     if (AdminBLL.Exists(userNameStr)) {
         MessageBox.Show(this, "用户名已存在!");
         return;
     }
     administrator Admin = new administrator();
     Admin.userName = userNameStr;
     Admin.passWord = Tools.encrypt(passWordStr);
     Admin.type = DropDownList1.SelectedItem.Value;
     try
     {
         AdminBLL.Add(Admin);
     }
     catch {
         MessageBox.Show(this, "添加失败!");
     }
     MessageBox.Show(this, "添加成功!");
     dataBind();
 }