ここで私を助けてください

Question

を働いていないLAST_INSERT_IDすることについては、私が持っているものです...

問題は、あなたのテーブルにauto-increment変数を持っている場合last_insert_id not working

Private Sub btnsave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnsave.Click 
    CMD.CommandText = "INSERT product_tbl (stockno, product_desc, price, Unit) VALUES (@stockno, @catid, @compid, @desc, @price, @unit);SELECT LAST_INSERT_ID()" 
    CMD.Parameters.AddWithValue("@stockno", txtstockno.Text) 
    CMD.Parameters.AddWithValue("@desc", txtdesc.Text) 
    CMD.Parameters.AddWithValue("@price", txtprice.Text) 
    CMD.Parameters.AddWithValue("@Unit", txtUnit.Text) 
    Dim ProductID As Int32 
    Try 
     ProductID = (System.Convert.ToInt32(CMD.ExecuteScalar)) 
    Catch ex As Exception 
     TR.Rollback() 
     CN.Close() 
     Throw ex 
    End Try 
    'the code above are working just fine but when it comes the second insert to   
    'inventory_tbl it doesn't work at all. am i missing something or did wrong? 

    CMD.CommandText = "INSERT invetory_tbl (productid, qty) VALUES(@productID, @qty)" 
    CMD.Parameters.Clear() 
    CMD.Parameters.AddWithValue("@orderID", ProductID) 
    ' CMD.Parameters.AddWithValue("@qty", txtqty.Text) 
    Try 
     CMD.ExecuteNonQuery() 
    Catch ex As Exception 
     TR.Rollback() 
     Throw ex 
    End Try 
    TR.Commit() 
    CN.Close() 

Answer 1

last_insert_idのみ動作することです...

あなたのテーブル構造は何ですか？コマンドを実行することでも同じことが分かります。

Also see if this link helps you