protected void btnLogin_Click(object sender, EventArgs e) { if (!string.IsNullOrEmpty(txtUserName.Text.Trim()) && !string.IsNullOrEmpty(txtPassword.Text.Trim())) { DataTable dt = new DataTable(); dt = _admin.Login(txtUserName.Text.Trim(), txtPassword.Text.Trim()); if (dt.Rows.Count > 0) { Session["username"] = txtUserName.Text.Trim(); Response.Redirect("~/admin/QLDuLieuNguoiDung/DuLieuNguoiDung/XemDuLieuNguoiDung.aspx"); } } }