protected void btn_login_Click(object sender, ImageClickEventArgs e) { if (txt_checkCode.Text.ToString().Trim() != string.Empty) { if (String.Compare(Session["CheckCode"].ToString(), txt_checkCode.Text, true) != 0) { lbl_errorMessage.Text = "验证码错误!"; lbl_errorMessage.Visible = true; return; } } else { return; } string userID = TextBox1.Text.ToString().Trim(); string userPass = TextBox2.Text.ToString().Trim(); cUser cuser = new cUser(); int groupid = -1; bool yorn = cuser.JudgUser(userID, userPass, out groupid); if (yorn) { cUserInfor uinfor = new cUserInfor(userID, userPass); Session["userinfor"] = uinfor; Response.Redirect("index.aspx"); } else { // Response.Redirect("login.aspx"); lbl_errorMessage.Text = "用户名或密码错误!"; lbl_errorMessage.Visible = true; } }