protected void btnXoa_Click(object sender, EventArgs e)
{
tbll.XoaTin(txtMaTin.Text);
Page_Load(sender, e);
Response.Write("<script language=''javascript>alert('" + " Xóa thành công! " + "')</script>");
txtMaTin.Text = "";
txtTieuDe.Text = "";
txtTomTat.Text = "";
txtHinhAnh.Text = "";
CKEditorControl1.Text = "";
txtNgayDang.Text = "";
txtLuotXem.Text = "";
txtTrangThai.Text = "";
}