收据在打印文档中有重叠的文本

Question

我在POS项目中创建打印收据并附上输出的图片

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我这里的问题是描述，数量，价格，数量的重叠。如何在代码的下一行显示数量、价格和金额？

e.Graphics.DrawString("Description" , new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(0, 260));
e.Graphics.DrawString("Qty" , new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(120, 260));
//e.Graphics.DrawString("UM" , new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(190, 190));
e.Graphics.DrawString("Price", new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(155, 260));          
e.Graphics.DrawString("Amount" , new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(205, 260));
e.Graphics.DrawString("-------------------------------------------", new Font("trebuchet ms", 12, FontStyle.Regular), Brushes.Black, new Point(0, 275));

int yPos = 300;

foreach (var i in TempVal)
{
  e.Graphics.DrawString(i.Particular + " (" + i.UM + ")", new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(0, yPos));
  e.Graphics.DrawString(i.Qty, new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(120, yPos));
  //e.Graphics.DrawString(i.UM, new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(190, yPos));
  e.Graphics.DrawString(i.Price +".00", new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(155, yPos));
  e.Graphics.DrawString(i.Total + ".00", new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(205, yPos));

  yPos = yPos + 20;
}

e.Graphics.DrawString("-------------------------------------------", new Font("trebuchet ms", 12, FontStyle.Regular), Brushes.Black, new Point(0, yPos));
e.Graphics.DrawString("Total Amount:                   Php " + label3.Text.Trim(), new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(0, yPos+20));
e.Graphics.DrawString("-------------------------------------------", new Font("trebuchet ms", 12, FontStyle.Regular), Brushes.Black, new Point(0, yPos+35));
e.Graphics.DrawString("Cash Tendered:                 Php " + label4.Text.Trim(), new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(0, yPos + 55));
e.Graphics.DrawString("Change:                            Php " + lblTotal.Text.Trim(), new Font("trebuchet ms", 10, FontStyle.Regular), Brushes.Black, new Point(0, yPos + 75));
e.Graphics.DrawString("-------------------------------------------", new Font("trebuchet ms", 12, FontStyle.Regular), Brushes.Black, new Point(0, yPos+95));

Answer 1

这将按照您的要求“显示下一行的数量、价格和金额”：

using (var f = new Font("trebuchet ms", 10, FontStyle.Regular))
{
    int yPos = 300;
    foreach (var v in TempVal)
    {
      e.Graphics.DrawString(v.Particular + " (" + v.UM + ")", f, Brushes.Black, new Point(0, yPos));
      yPos += 20;

      e.Graphics.DrawString(v.Qty, f, Brushes.Black, new Point(120, yPos));
      e.Graphics.DrawString(v.Price +".00", f, Brushes.Black, new Point(155, yPos));
      e.Graphics.DrawString(v.Total + ".00", f, Brushes.Black, new Point(205, yPos));
      yPos += 20;
    }
}

请注意，只有当TempVal保证只有在一个页面上所有记录都适合的情况下才能工作。如果有足够多的记录需要更多的页面，那么您必须计算一个页面和split your output onto multiple pages上适合的行数。