Question

I am trying to print a single tiff file with multiple frames. However if I use javascript (window.print()) i get a print out of the entire webpage and not just the tiff image.

So I looked around StackOverflow and found some sample code. I was trying to implement it however the problem is the that the code works for an absolute image URL :- such as “C:\img.jpeg”

I am wondering if anyone can show me how to transform my imgFax.ImageUrl to an actual image name? (otherwise I get an error:- “Illegal character in path” <— in my System.Drawing.Image img = System.Drawing.Image.FromFile(imgFax.ImageUrl); code)

If anyone can show me some sample code that would be amazing! Thanks.

protected void PrintAll_Click(object sender, EventArgs e) 
{ 
  // number of frames 
  int number = _FaxPages.Count; 


 // for loop to iterate through each frame 
 for (int i = 0; i < number; i++) 
  { 
     // fax ID 
     string _FaxId = Page.Request["FaxId"]; 

     //string _Frame = Page.Request["Frame"]; 

     // current frame 
     _PageIndex = i; 

     // IMG URL 
     imgFax.ImageUrl = "ShowFax.ashx?n=" + _FaxId + "&f=" + _PageIndex + "&mw=750"; 



     PrintDocument pd = new PrintDocument(); 

     pd.PrintPage += PrintPage; 
     pd.Print();   

 }      

}

private void PrintPage(object o, PrintPageEventArgs e) 
{ 
   System.Drawing.Image img = System.Drawing.Image.FromFile(imgFax.ImageUrl); 
   Point loc = new Point(100, 100); 
   e.Graphics.DrawImage(img, loc); 
} 

Answer 1

I’m not sure whether you can at all do any printing in ASP via PrintDocument. This is all server-side code, while the printing is to be done at – and by the client’s browser. I think that you will have to do it via JavaScript, but to not print the entire page – you will have to create another page that will only present the contents to be printed, then redirect the user to that smaller page (for example in a popup window) and then auto-print it via javascript. I;m not 100% sure, but all banking sites I use seem to follow that, and this is quite common in general..

For example, here’s an article with this exact approach: http://www.dotnetcurry.com/ShowArticle.aspx?ID=92

just remember that your small ‘print-page’ should actually display the things you want to print 🙂

another nice link on printing images: http://forums.asp.net/post/3369436.aspx