protected void ddlLoai_SelectedIndexChanged(object sender, EventArgs e)
{
chucnag cn = new chucnag();
if (ddlLoai.SelectedValue.ToString() == "TG")
{
ddlChiTiet.DataSource = cn.GetTacGia();
ddlChiTiet.DataTextField = "TenTacGia";
ddlChiTiet.DataValueField = "MaTacGia";
ddlChiTiet.DataSourceID = null;
ddlChiTiet.DataBind();
}
else if (ddlLoai.SelectedValue.ToString() == "NXB")
{
ddlChiTiet.DataSource = cn.GetNhaXuatBan();
ddlChiTiet.DataTextField = "TenNhaXB";
ddlChiTiet.DataValueField = "MaNhaXB";
ddlChiTiet.DataSourceID = null;
ddlChiTiet.DataBind();
}
else
{
ddlChiTiet.DataSource = cn.GetLoaiSach();
ddlChiTiet.DataTextField = "TenLoaiSach";
ddlChiTiet.DataValueField = "MaLoai";
ddlChiTiet.DataSourceID = null;
ddlChiTiet.DataBind();
}
}
protected void Page_Load(object sender, EventArgs e)
{
chucnag cn = new chucnag();
if (!IsPostBack)
{
lblNhan.Text = "Xin chào: " + Session["masv"].ToString();
DoDuLieuVaoGridView();
ddlChiTiet.DataSource = cn.GetTacGia();
ddlChiTiet.DataTextField = "TenTacGia";
ddlChiTiet.DataValueField = "MaTacGia";
ddlChiTiet.DataSourceID = null;
ddlChiTiet.DataBind();
}
}