Question

我正在尝试创建一个帐单。我在sql-server中有两个表。文本框应将日期插入表1，并将datagridview插入表2。

我没有收到任何错误，但是我有一个生成自动编号的文本框，并且在每个编号下datagridview中应该有多行。

下面的代码仅保存表中的最后一行。 This is my billing form.

您可以检查代码并告诉我哪里出了问题吗？

        con = new SqlConnection("data source=localhost;initial catalog=testDb;integrated security=true");
        con.Open();
        cmd = new SqlCommand(@"select CashirReport.ReportId,CashirReport.ReportNumber,CashirReport.ReportDate ,
            CashirReportDetails.SerialNumber,
            CashirReportDetails.RefDetails,CashirReportDetails.Amount from CashirReport
            inner join CashirReportDetails on CashirReport.ReportId=CashirReportDetails.ReportDetailsNumber", con);
        da = new SqlDataAdapter();
        da.SelectCommand = cmd;
        dt = new DataTable();
        da.Fill(dt);


    }

    private void btnsave_Click(object sender, EventArgs e)
    {
        for (int i = 0; i < dgvDetails.Rows.Count - 1; i++)
        {
        cmd = new SqlCommand(@"insert into CashirReport(ReportDate,Total)values(@ReportDate,@Total);
                insert into CashirReportDetails(SerialNumber,RefDetails,Amount)values(@SerialNumber,@RefDetails,@Amount)",con);

        cmd.Parameters.AddWithValue("@ReportDate", SqlDbType.Date).Value = dtDate.Value.Date;
        cmd.Parameters.AddWithValue("@Total", SqlDbType.Money).Value = txtAmount.Text;


            cmd.Parameters.AddWithValue("@SerialNumber", dgvDetails.Rows[i].Cells[0].Value);
            cmd.Parameters.AddWithValue("@RefDetails", dgvDetails.Rows[i].Cells[1].Value);
            cmd.Parameters.AddWithValue("@Amount", dgvDetails.Rows[i].Cells[2].Value);
        }
        cmd.ExecuteNonQuery();

Answer 1

只需将cmd.ExecuteNonQuery();放入for循环内即可：

    private void btnsave_Click(object sender, EventArgs e)
    {
        for (int i = 0; i < dgvDetails.Rows.Count - 1; i++)
        {
            cmd = new SqlCommand(@"insert into CashirReport(ReportDate,Total)values(@ReportDate,@Total);
                insert into CashirReportDetails(SerialNumber,RefDetails,Amount)values(@SerialNumber,@RefDetails,@Amount)",con);

            cmd.Parameters.AddWithValue("@ReportDate", SqlDbType.Date).Value = dtDate.Value.Date;
            cmd.Parameters.AddWithValue("@Total", SqlDbType.Money).Value = txtAmount.Text;
            cmd.Parameters.AddWithValue("@SerialNumber", dgvDetails.Rows[i].Cells[0].Value);
            cmd.Parameters.AddWithValue("@RefDetails", dgvDetails.Rows[i].Cells[1].Value);
            cmd.Parameters.AddWithValue("@Amount", dgvDetails.Rows[i].Cells[2].Value);

            //inside the for loop
            cmd.ExecuteNonQuery();
        }
    }

sql-server：使用文本框和datagridvew更新两个表

1 个答案: