代码生成的打印纸在纸上变成空白！ [英] Code generated prints come out blank on paper!

问题描述

大家好，

我一直在试图弄清楚为什么我的程序只打印空白页！

我将VS2010与C#WPF一起使用.该程序本身不会崩溃或引发任何错误，但会经历打印文本框中内容的动作.
我真的不知道我在这里想念的是什么，我看过一些书籍，网络等示例，但无济于事！

如果有任何建议，我将表示欢迎.

这是代码的印刷部分:

Hi all,

I''ve been trying to figure out why my program only prints blank pages!

I use VS2010 with C# WPF. The program itself does not crash or throw any error, but it goes through the motions of printing what''s in the textBox.
I don''t really know what I''m missing here, I''ve looked at some examples in books, web, etc... but no avail!

I would welcome any suggestions if any.

Here''s the printing part of the code:

private void printNumberList(object sender, RoutedEventArgs e)
{
    PrintDocument textPrintPage = new PrintDocument();
    PrintDialog textPrintPreviewDialog = new PrintDialog();

    if (textPrintPreviewDialog.ShowDialog() == true)
       {
          textPrintPage.Print();
       }
    }

private void textPrintPage_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            int x = e.MarginBounds.Left;
            int y = e.MarginBounds.Top;
            using (Font font = new Font("Times New Roman", 20))
         {

            string [] lines = new string[25];
            for (int i = 0; i< lines.Length-1; i++)
            {
                lines[i] = dataFileText.GetLineText(i);
            }

          e.Graphics.DrawString("List of numbers", font, Brushes.Black, x, y + 20);
          y += 40;

             for (int i = 0; i < lines.Length - 1; i++)
             {
                    e.Graphics.DrawString(lines[i], font, Brushes.Black, x, y);
                    y += 30;
             }

           }
            e.HasMorePages = false;

        }

推荐答案

您需要连接打印事件

You need to connect the Print Event

private void printNumberList(object sender, RoutedEventArgs e)
{
    PrintDocument textPrintPage = new PrintDocument();

    textPrintPage.PrintPage += new EventHandler<PrintPageEventArgs>(textPrintPage_PrintPage);

    PrintDialog textPrintPreviewDialog = new PrintDialog();
 
    if (textPrintPreviewDialog.ShowDialog() == true)
       {
          textPrintPage.Print();
       }
    }

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