使用 WinForms 应用程序格式化收据

Question

我正在使用餐厅账单打印软件。

我已经开发了收据。但它们看起来并不像收据。

我遵循了 codeProject 的解决方案。这是我创建收据的代码：

//Get the Graphics object
        Graphics g = printTextEvArgs.Graphics;

        //Create a font Arial with size 16
        Font font = new Font("Arial", 10);
        float fontHeight = font.GetHeight();
        string underLine = "------------------------------------------";

        int startX = 10;
        int startY = 10;
        int offset = 40;

        //Create a solid brush with black color
        SolidBrush brush = new SolidBrush(Color.Black);
        if (RecieptType == "ktcprinter")
        {
        }
        else if (RecieptType == "billprinter")
        {
            g.DrawString(restaurantInfo.name, new Font("Courier New", 16), new SolidBrush(Color.Black), startX, startY);
            offset = offset + (int)fontHeight + 20;

            var wc = new WebClient();
            Image imgFromUrl = Image.FromStream(wc.OpenRead(b.restaurant_info.logo));
            g.DrawImage(imgFromUrl, 60, 40, 150, 100);

            offset = offset + (int)fontHeight + 50;

            g.DrawString("Address: " + restaurantInfo.address, new Font("Courier New", 12), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + (int)fontHeight + 5;
            g.DrawString("Phone: " + restaurantInfo.phone, new Font("Courier New", 12), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + (int)fontHeight + 5;
            g.DrawString("Vat Reg. No.: " + restaurantInfo.vat_reg_no, new Font("Courier New", 12), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + (int)fontHeight + 5;
            g.DrawString("Served By: " + employeeInfo.served_by, new Font("Courier New", 12), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + 13;
            g.DrawString(underLine, new Font("Courier New", 12), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + 13;

            foreach (var item in b.items)
            {
                string menuTitle = item.menu_title + item.quantity + item.price;
                g.DrawString(menuTitle, new Font("Courier New", 10), new SolidBrush(Color.Black), startX, startY + offset);
                offset = offset + (int)fontHeight + 5;
            }

            //Get UnderLine
            offset = offset - 8;
            g.DrawString(underLine, new Font("Courier New", 12), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + 15;

            g.DrawString("Sub Total: " + calculation.sub_total, new Font("Courier New", 10), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + (int)fontHeight + 5;
            g.DrawString("Discount: " + calculation.discount, new Font("Courier New", 10), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + (int)fontHeight + 5;                
            g.DrawString("Vat: " + calculation.vat, new Font("Courier New", 10), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + (int)fontHeight + 5;
            g.DrawString("Service Charge: " + calculation.service_charge, new Font("Courier New", 10), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + (int)fontHeight + 5;
            g.DrawString("Delivery Charge: " + calculation.delivery_charge, new Font("Courier New", 10), new SolidBrush(Color.Black), startX, startY + offset);

            //Get UnderLine
            offset = offset + 12;
            g.DrawString(underLine, new Font("Courier New", 12), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + 12;

            g.DrawString("Total: " + calculation.total.PadRight(30), new Font("Courier New", 10), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + (int)fontHeight + 5;

            //Get UnderLine
            offset = offset - 11;
            g.DrawString(underLine, new Font("Courier New", 12), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + 13;


            foreach (var item in b.payments)
            {
                string paymentMethod = item.method + item.amount;
                g.DrawString(paymentMethod, new Font("Courier New", 10), new SolidBrush(Color.Black), startX, startY + offset);
                offset = offset + (int)fontHeight + 5;
            }

            g.DrawString("Change: " + calculation.change, new Font("Courier New", 10), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + (int)fontHeight + 5;
            g.DrawString("Pay Tip: " + calculation.pay_tip, new Font("Courier New", 10), new SolidBrush(Color.Black), startX, startY + offset);
            offset = offset + (int)fontHeight + 5;
            offset = offset + 20;

            //offset = offset + 20;
            //g.DrawString("Total To Pay".PadRight(30) + string.Format("{0:c}"), variable, font, new SolidBrush(Color.Black), startX, startY + offset);
        }

        //Draw "Hello Printer!";
        //new Rectangle(margin X, margin Y, Width, Height)
        //g.DrawString(printString.ToString(),
        //font, brush, new Rectangle(5, 0, 350, 500));
    }

我得到的结果如下图所示。我想让它像一张真实的收据。

一栏是数量，另一栏是价格。

（请注意，我遵循的解决方案非常适合他们。）

我目前的输出：

Answer 1

如果您想使用固定字体，例如 Courier 或 Consolas，您的问题可以通过 padding 左侧部分轻松解决每行一定长度的空格。

下一步是填充右边的部分，这样数字就是right-aligned。

为此你最好写一个小的辅助函数：

string alignedNumber(decimal number, int length)
{
    return ("$" + number).PadLeft(length, ' ');
}

所以你写：

 g.DrawString("Change: ".PadRight(25, ' ') + alignedNumber(price, 8)...);

..对于所有带列的输出。（选择你自己的号码！）

如果您选择更改为比例字体，则需要为该位置编写单独的 DrawString 调用并为每个调用设置 x-offset。为了正确对齐，您还必须测量使用 Graphics.MeasureString 的数字字符串的宽度。参见

使用 WinForms 应用程序格式化收据

Format a receipt with WinForms Application

c#

printing

winforms

receipt