Computer Science Canada

Printing forms in C#
Author:  Nathan4102 [ Thu Oct 10, 2013 6:26 pm ]
Post subject:  Printing forms in C#
I've learned C#.net for my co-op, but I'm having a bit of trouble printing quality forms. I tried taking a screen cap of the form, then printing the .bmp, but that resulted in really bad quality. I've heard there's a way to draw a form on a printDocument thingy, and then print straight from that, but I haven't been able to find any good information on this. My form has labels, text boxes, radio buttons, check boxes, and a picture frame.

Does anyone know how I can print my forms clearly?

Thanks,
Nathan
Author:  rdrake [ Thu Oct 10, 2013 11:31 pm ]
Post subject:  Re: Printing forms in C#
Your computer screen is probably set to 96 DPI, while a low-quality printer will give you at least 300 DPI. This is why the image looks like garbage once printed.

I found some promising information on Google. It looks like you'll basically have some way of triggering a print event, copy the contents of the form.

C#:

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);
}


You then draw the bitmap to the print canvas and it prints.

C#:

private void printDocument1_PrintPage(System.Object sender, 
       System.Drawing.Printing.PrintPageEventArgs e)
{
    e.Graphics.DrawImage(memoryImage, 0, 0);
}


You can also let the user change settings, display a print preview, etc. The entire namespace is full of functionality.
Author:  Nathan4102 [ Fri Oct 11, 2013 8:06 am ]
Post subject:  RE:Printing forms in C#
This is the way I already tried, it printed, but with terrible quality.
Author:  Nathan4102 [ Fri Oct 11, 2013 1:27 pm ]
Post subject:  RE:Printing forms in C#
Solved, I figure out how to draw to a PrintDocument. Its freakishly tedious though, I've been going for hours now and I'm still not finished my one page form.

:


You can syndicate this boards posts using the file backend.php or view the topic map using sitemap.php.

Terms of Use | Privacy Policy