使用C＃在Crystal Reports中使用外键显示来自两个表的数据

Question

I have two tables, BonLivraison and LigneBonLivraison :

BonLivraison : CodeBonLivraison , DateBonLivraison

LigneBonLivraison : Id , Quantite , LibArticleAr , CodeBonLivraison (Foreign key from BonLivraison table).

I used this code in order to display data from these two tables in Crystal Reports:

string sql3 = "SELECT BonLivraison.CodeBonLivraison, BonLivraison.DateBonLivraison, LigneBonLivraison.Quantite, LigneBonLivraison.LibArticleAr FROM BonLivraison, LigneBonLivraison WHERE BonLivraison.CodeBonLivraison = @numm AND MONTH(BonLivraison.DateBonLivraison) = @d1 AND BonLivraison.CodeBonLivraison = LigneBonLivraison.CodeBonLivraison";

SqlCommand cmd3 = new SqlCommand(sql3, con);
cmd3.Parameters.AddWithValue("@numm", row);
cmd3.Parameters.AddWithValue("@d1", Convert.ToInt32(comboBox1.SelectedValue));
SqlDataAdapter dscmd3 = new SqlDataAdapter(cmd3);

dscmd3.Fill(dsS, "BonLivraison");
dscmd3.Fill(dsS, "LigneBonLivraison");
CrystalReport6 objRpt6 = new CrystalReport6();
objRpt6.SetDataSource(dsS);

crystalReportViewer6.ReportSource = objRpt6;

But this code displays doubled data like this:

It should display just one record "HP S1933 MONITOR" and one record "CANON LIDE 110". I tried INNER JOIN , but had same problem, how do I solve this?

Answer 1

You should only fill your dataset dsS once.

You are joining two tables, but end up still with one result set of data.

You also don't need to use that overload of Fill to specify a table. Just do:

dscmd3.Fill(dsS);