提高C#中的打印区域质量 [英] Improve the quality of printing area in C#

问题描述

我想在C#Windows应用程序的面板控件中打印数据.
我正在使用以下代码来获取打印区域:

Hi,

I want to print the data in a panel control in C# windows application.
I''m using the following code to get the printing area:

Bitmap MemoryImage;
       public void GetPrintArea(Panel pnl)
       {
           MemoryImage = new Bitmap(pnl.Width, pnl.Height);
           Rectangle rect = new Rectangle(0, 0, pnl.Width, pnl.Height);
           //MemoryImage.SetResolution(100f, 100f);
           pnl.DrawToBitmap(MemoryImage, new Rectangle(0, 0, pnl.Width, pnl.Height));

       }

       void printDoc1_PrintPage(object sender, PrintPageEventArgs e)
       {
           Rectangle pagearea = e.PageBounds;
           e.Graphics.DrawImage(MemoryImage, 0, 0);
           //MemoryImage.SetResolution(200f, 200f);
       }

但是在打印时，文档质量很差，标签和图像在打印时不清晰.如何获得清晰的印刷品?

谢谢.

But when printing, the quality of document is very poor, labels and images are not clear on print. How can I get the clear print?

Thank you.

推荐答案

添加此命名空间

使用System.Drawing.Printing;
使用System.IO;

类标签变量

add this namespace

using System.Drawing.Printing;
using System.IO;

class label variable

System.Drawing.Bitmap memoryimage;


write this code printbutton_click event

PrintDialog myprintdialog = new PrintDialog();
                memoryimage = new System.Drawing.Bitmap(panelprint.Width, panelprint.Height);
                panelprint.DrawToBitmap(memoryimage, panelprint.ClientRectangle);
                if (myprintdialog.ShowDialog() == DialogResult.OK)
                {
                    System.Drawing.Printing.PrinterSettings value;
                    value = myprintdialog.PrinterSettings;
                    myprintdialog.Document = printDocument1;
                    printDocument1.PrintController = new StandardPrintController();
                    panelprint.BackColor = Color.White;
                    printDocument1.Print();
}


<pre lang="cs">private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
       {
           e.Graphics.DrawImage(memoryimage, -2, 30);
       }</pre>

其中panelprint是面板的名称

我认为这对您有帮助........
问候
假:)

where panelprint is the name of panel

I think this is helpfull to u..........
Regard
Sham :)

浏览以下链接，这可能会对您有所帮助.
在这里 [此处 [

Hi,

Go through the below links, this may helps you.
Hwere[^]

Here[^]

Thanks
--RA

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