protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
NguoiDung c = new NguoiDung();
int currentUserId = (int)Session["MaNguoiDung"];
DataTable danhSachChat = c.DanhSachChat(currentUserId);
rptData.DataSource = danhSachChat;
rptData.DataBind();
}
}