如何以ddmmyyhhmmss格式生成发票编号 [英] how to generate the Invoice number in the format of ddmmyyhhmmss

问题描述

如何以ddmmyyhhmmss格式生成发票编号

how to generate the Invoice number in the format of ddmmyyhhmmss

推荐答案

尝试：

Try:

string value = DateTime.Now.ToString("ddMMyyhhmmss");

刚刚注意到 - 你说发票号码？

通常有关于发票编号的规则，因为它们必须是连续的（以便税务局可以确保没有任何遗漏） - 这不会那样做，并且会结果可能是一个坏主意。

Just noticed - you said "invoice number"?
There are normally rules about invoice numbers, in that they must be sequential (so that the Tax office can be sure that there aren't any missing) - this does not do that, and would probably be a bad idea as a result.

String invoice_number = DateTime.Now.ToString（ddMMyyhhmmss）;

label.Text = invoice_number.ToString（ ）;



请在这里考虑

MM-月份的两位数。

mm - 分钟。



所以在这里你应该使用格式

String invoice_number = DateTime.Now.ToString("ddMMyyhhmmss");
label.Text = invoice_number.ToString();

Please consider here
MM-two digits of month.
mm - minutes.

so here you should use the format

ddMMyyhhmmss

dd-两位数d吃了

MM-两位数月份

yy-两位数年份

hh - ditis小时

mm-数字分钟

ss-seconds in digis。

dd-two digit date
MM-two digit month
yy-two digit year
hh - hours in ditis
mm- minutes in digits
ss-seconds in digis.

使用此代码：

Use This Code:

int ctr, len;
            string code;
            DataRow drr;
            string qry = "select top 1 id from client_bill_Tb order by id desc";
            DataTable dt = cbbal.GetData(qry);
            len = dt.Rows.Count - 1;
            drr = dt.Rows[len];
            code = drr["id"].ToString();
            ctr = Convert.ToInt32(code);

            if ((ctr >= 0) && (ctr < 9))
            {
                ctr = ctr + 1;
                txtInvoice.Text = ctr + DateTime.Now.ToString("/MMyyyy");
            }
            else if ((ctr >= 9) && (ctr < 100))
            {
                ctr = ctr + 1;
                txtInvoice.Text = ctr + DateTime.Now.ToString("/MMyyyy");
            }
            else if (ctr >= 99)
            {
                ctr = ctr + 1;
                txtInvoice.Text = ctr + DateTime.Now.ToString("/MMyyyy");
           }

我希望你对你有用...

I hope u its useful for u...

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