private void load()
 {
     DataSetFILM.TbQuanLyLichChieuDataTable dsQLLC = new DataSetFILM.TbQuanLyLichChieuDataTable();
     DataAccess.dt = dsQLLC;
     ReSource      = "SELECT * FROM TbQuanLyLichChieu ORDER BY MaLichChieu ASC";
     DataAccess_source();
 }
 private void treeView_SM_AfterSelect(object sender, TreeViewEventArgs e)
 {
     if (treeView_SM.Nodes["Root"] == treeView_SM.SelectedNode)
     {
         load();
     }
     DataSetFILM.TbQuanLyLichChieuDataTable dsQLLC = new DataSetFILM.TbQuanLyLichChieuDataTable();
     DataAccess.dt = dsQLLC;
     if (treeView_SM.Nodes["NodeDate"] == treeView_SM.SelectedNode.Parent)
     {
         DateTime temp = Convert.ToDateTime(treeView_SM.SelectedNode.Tag);
         ReSource = string.Format("SELECT * FROM TbQuanLyLichChieu WHERE NgayChieu = '{0}'", temp.ToString("yyyy-MM-dd"));
         DataAccess_source();
     }
     if (treeView_SM.Nodes["NodeMovie"] == treeView_SM.SelectedNode.Parent)
     {
         ReSource = string.Format("SELECT a.* FROM TbQuanLyLichChieu AS a JOIN TbPhim AS b ON a.MaPhim = b.MaPhim WHERE b.TenPhim = N'{0}'", treeView_SM.SelectedNode.Text);
         DataAccess_source();
     }
 }