c# - 在 Devexpress GridView 中使用 lookUpEdit？

Question

GridView 中有一个lookUpEdit 列，但是当我选择它时该值丢失。我需要为每一行选择不同的值，我该怎么办？

截屏

    SqlConnection con = new SqlConnection("server=lenovo\\sqlexpress; initial catalog=TEST_2021; user id=sa; password=???");
con.Open();
SqlDataAdapter da = new SqlDataAdapter("SELECT Kod,Aciklama FROM dbo.hesplan", con);
DataTable dthesplan = new DataTable();
da.Fill(dthesplan);


RepositoryItemLookUpEdit HesKodu = new RepositoryItemLookUpEdit();
HesKodu.LookAndFeel.UseDefaultLookAndFeel = false;
HesKodu.DataSource = dthesplan;
HesKodu.DisplayMember = "Kod";
HesKodu.ValueMember = "Kod";
HesKodu.NullText = "Hesap Kodu Seç!";
gridView1.Columns["HesapKodu"].ColumnEdit = HesKodu;