1 User[] aUsers = Gateways.SdaiBuy.From<Entities.User>().Where(Entities.User._.UserName == tbName.Text.Trim()).ToArray<Entities.User>();
2        if (aUsers.Length > 0)
3        {
4            lblError.Text = "??????";
5        }
6        else
7        {
8            Entities.User aUser = new Entities.User();
9            aUser.UserName = tbName.Text.Trim();
10            aUser.Password = tbPassword.Text;
11            aUser.College = ddlCollege.SelectedValue;
12            aUser.dorm = ddlDorm.SelectedValue;
13            aUser.HeadPic = "UpFile/UserFace/noname.jpg";
14            int UserID = Gateways.SdaiBuy.Save<User>(aUser);
15
16            Response.Redirect("Registerok.aspx?UserID=" + UserID);
17        }

User aUser=new User();