小编Sae*_*wke的帖子

我需要执行四个查询然后如果有成功则必须返回true,否则返回false.

查询会影响数据库,但函数返回false

Private Function save_to_data()
    Dim success As Boolean = False

    Dim conn As OleDbConnection = GetDbConnection()

    Dim total_due As Decimal = sanitize(txt_total_due.Text)
    Dim amount_paid As Decimal = sanitize(txt_due.Text)
    Dim discount As Decimal = sanitize(txt_discount.Text)
    Dim balance As Decimal = sanitize(txt_balance.Text)

    Dim cmdfoods As New OleDbCommand("UPDATE foods SET status='billed' WHERE customer_id = " & lbl_id.Text & "", conn)
    Dim cmdservices As New OleDbCommand("UPDATE services SET status =  'billed' WHERE customer_id = " & lbl_id.Text & "", conn)
    Dim cmdreservations As …