时间戳

首页 > 解决方案 > 如何打印全宽窗口窗体C#。？

c# - 如何打印全宽窗口窗体C#。？

问题描述

我正在尝试打印完整的表格，但它打印的文档没有覆盖整个宽度。我尝试了不同的方法，但没有得到想要的结果。我已从此链接 https://docs.microsoft.com/en-us/dotnet/framework/winforms/advanced/how-to-print-a-windows-form获得帮助

这是我得到的半印 这是我得到的结果

这是我要打印的完整表格 这是我想完全打印的完整表格

请告诉我如何打印完整的表格。提前致谢

标签： c#winformsprinting

解决方案

我不确定您所关注的链接，即使在尝试打印整个表单一次时尝试了多个代码后，我也遇到了同样的错误。然后我在互联网上的某个地方找到了下面的代码，它打印了整个表格。

    private System.IO.Stream streamToPrint;
    string streamType;
    PrintDocument printDoc = new PrintDocument();
    [System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]
    private static extern bool BitBlt
    (
        IntPtr hdcDest, // handle to destination DC  
        int nXDest, // x-coord of destination upper-left corner  
        int nYDest, // y-coord of destination upper-left corner  
        int nWidth, // width of destination rectangle  
        int nHeight, // height of destination rectangle  
        IntPtr hdcSrc, // handle to source DC  
        int nXSrc, // x-coordinate of source upper-left corner  
        int nYSrc, // y-coordinate of source upper-left corner  
        System.Int32 dwRop // raster operation code  
    );
    private void printDoc_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
    {
        System.Drawing.Image image = System.Drawing.Image.FromStream(this.streamToPrint);
        int x = e.MarginBounds.X;
        int y = e.MarginBounds.Y;
        int width = image.Width;
        int height = image.Height;
        if ((width / e.MarginBounds.Width) > (height / e.MarginBounds.Height))
        {
            width = e.MarginBounds.Width;
            height = image.Height * e.MarginBounds.Width / image.Width;
        }
        else
        {
            height = e.MarginBounds.Height;
            width = image.Width * e.MarginBounds.Height / image.Height;
        }
        System.Drawing.Rectangle destRect = new System.Drawing.Rectangle(x, y, width, height);
        e.Graphics.DrawImage(image, destRect, 0, 0, image.Width, image.Height, System.Drawing.GraphicsUnit.Pixel);
    }
    private void btnPrintDoc_Click(object sender, EventArgs e)
    {
        Graphics g1 = this.CreateGraphics();
        System.Drawing.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(@"D:\PrintPage.jpg", ImageFormat.Jpeg);
        FileStream fileStream = new FileStream(@"D:\PrintPage.jpg", FileMode.Open, FileAccess.Read);
        StartPrint(fileStream, "Image");
        fileStream.Close();
    }
    public void StartPrint(Stream streamToPrint, string streamType)
    {
        this.printDoc.PrintPage += new PrintPageEventHandler(printDoc_PrintPage);
        this.streamToPrint = streamToPrint;
        this.streamType = streamType;
        System.Windows.Forms.PrintDialog PrintDialog1 = new PrintDialog();
        PrintDialog1.AllowSomePages = true;
        PrintDialog1.ShowHelp = true;
        PrintDialog1.Document = printDoc;
        DialogResult result = PrintDialog1.ShowDialog();
        if (result == DialogResult.OK)
        {
            printDoc.Print();
            //docToPrint.Print();  
        }
    }

推荐阅读