打印在C＃Windows窗体 [英] Print Windows form in c#

问题描述

我想使用此代码打印表单：

 私人无效btnPrint_Click（对象发件人，EventArgs五）
 {
图形G1 = this.CreateGraphics（）; 
图像MYIMAGE =新位图（this.ClientRectangle.Width，this.ClientRectangle.Height，G1）; 
图形G2 = Graphics.FromImage（MYIMAGE）; 
 IntPtr的DC1 = g1.GetHdc（）; 
 IntPtr的DC2 = g2.GetHdc（）; 
的BitBlt（DC2，0，0，this.ClientRectangle.Width，this.ClientRectangle.Height，DC1，0，0，13369376）; 
 g1.ReleaseHdc（DC1）; 
 g2.ReleaseHdc（DC2）; 
 MyImage.Save（@C：\PrintPage.jpg，ImageFormat.Jpeg）; 
的FileStream FILESTREAM =新的FileStream（@C：\PrintPage.jpg，FileMode.Open，FileAccess.Read）; 
 StartPrint（FILESTREAM，图像）; 
 fileStream.Close（）; 
如果（System.IO.File.Exists（@C：\PrintPage.jpg））
 {
 System.IO.File.Delete（@C：\PrintPage .JPG）; 
} 
} 
  

但给我一个错误的位置：MyImage.Save

错误：

ExternalException是未处理：在发生一般性错误GDI +。

有人可以给我这个问题的修复程序，并解释了，为什么我'收到此错误？

在此先感谢！

解决方案

 私人无效btn_print_Click（对象发件人，EventArgs五）
 {
 CaptureScreen（）; 
 printDocument1.Print（）; 
 printDocument1.PrintPage + =新PrintPageEventHandler（printDocument1_PrintPage）; 
} 
 
位图memoryImage; 
 
私人无效CaptureScreen（）
 {
图形myGraphics = this.CreateGraphics（）; 
大小S = this.Size; 
 memoryImage =新位图（s.Width，s.Height，myGraphics）; 
图形memoryGraphics = Graphics.FromImage（memoryImage）; 
 memoryGraphics.CopyFromScreen（this.Location.X，this.Location.Y，0，0，S）; 
} 
 
 
私人无效printDocument1_PrintPage（对象发件人，System.Drawing.Printing.PrintPageEventArgs E）
 {
 
} 
 
私人无效printDocument1_PrintPage_1（对象发件人，PrintPageEventArgs E）
 {
 e.Graphics.DrawImage（memoryImage，0，0）; 
} 
  

从工具箱中，形成拖动添加print_document。执行此代码，它会正常工作。

的 http://csharpprobsandsoln.blogspot.in/2013/04/print-windows-form-in-c.html

I am trying to print a form using this code:

private void btnPrint_Click(object sender, EventArgs e)
    {
        Graphics g1 = this.CreateGraphics();
        Image MyImage = new Bitmap(this.ClientRectangle.Width, this.ClientRectangle.Height, g1);
        Graphics g2 = Graphics.FromImage(MyImage);
        IntPtr dc1 = g1.GetHdc();
        IntPtr dc2 = g2.GetHdc();
        BitBlt(dc2, 0, 0, this.ClientRectangle.Width, this.ClientRectangle.Height, dc1, 0, 0, 13369376);
        g1.ReleaseHdc(dc1);
        g2.ReleaseHdc(dc2);
        MyImage.Save(@"c:\PrintPage.jpg", ImageFormat.Jpeg);
        FileStream fileStream = new FileStream(@"c:\PrintPage.jpg", FileMode.Open, FileAccess.Read);
        StartPrint(fileStream, "Image");
        fileStream.Close();
        if (System.IO.File.Exists(@"c:\PrintPage.jpg"))
        {
            System.IO.File.Delete(@"c:\PrintPage.jpg");
        }
    }

But is gives me an error at: MyImage.Save.

The error:

ExternalException was Unhandled: A generic error occurred in GDI+.

Can someone give me a fix for this problem,and explain, why I'am getting this error?

Thanks in Advance!

解决方案

    private void btn_print_Click(object sender, EventArgs e)
    {
        CaptureScreen();
        printDocument1.Print();
        printDocument1.PrintPage += new PrintPageEventHandler(printDocument1_PrintPage);
    }

    Bitmap memoryImage;

    private void CaptureScreen()
    {
        Graphics myGraphics = this.CreateGraphics();
        Size s = this.Size;
        memoryImage = new Bitmap(s.Width, s.Height, myGraphics);
        Graphics memoryGraphics = Graphics.FromImage(memoryImage);
        memoryGraphics.CopyFromScreen(this.Location.X, this.Location.Y, 0, 0, s);
    }


    private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
    {

    }

    private void printDocument1_PrintPage_1(object sender, PrintPageEventArgs e)
    {
        e.Graphics.DrawImage(memoryImage, 0, 0);
    }

Add a print_document by dragging it from the toolbox to form. Execute this code, it will work fine.

http://csharpprobsandsoln.blogspot.in/2013/04/print-windows-form-in-c.html

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