CSharp/C#, Print Documents PrintDocument-- (PrintDocument is much harder than it looks)

by **raylopez99** » Fri, 29 Aug 2008 18:06:52 GMT

Spoke too soon! I tried printing more than two pages, and found that
the code is truncated after two pages. So my optimism was premature.

Now I'm stuck again...how to make this code work for printing more
than two pages of text?

If you have a sample print method you can upload for future reference
I would be greatful.

Tx,

RL

raylopez99 wrote:
>
> Now the code works flawlessly.
>

by **Family Tree Mike** » Sat, 30 Aug 2008 07:29:56 GMT

These controls would be on the form: FileLabel, ChooseFileButton,
PrintFileButton, QuitButton, and ContentsTextBox. The control types are
hopefully obvious...

This is quick code, and I know one issue is the text lines are not checked
if they go off the right side of the page. You will note that I am working
with the text lines, not the contents of the text box.

Hopefully this is helpfull to you or others....

Mike

================================================

public partial class MyPrintAppUI : Form
{
private string TextFileName { get; set; }
private string[] TextLines { get; set; }

public MyPrintAppUI()
{
InitializeComponent();

TextFileName = "Unknown.txt";
FileLabel.Text = TextFileName;

ChooseFileButton.Click += new EventHandler(ChooseFileButton_Click);
PrintFileButton.Click += new EventHandler(PrintFileButton_Click);
QuitButton.Click += delegate { Close(); };
}

private void ChooseFileButton_Click(object sender, EventArgs e)
{
using (OpenFileDialog ofd = new OpenFileDialog())
{
if (ofd.ShowDialog() == DialogResult.OK)
{
TextFileName = ofd.FileName;
FileLabel.Text = TextFileName;
TextLines = File.ReadAllLines(TextFileName);
ContentsTextBox.Text = File.ReadAllText(TextFileName);
}
}
}

private void PrintFileButton_Click(object sender, EventArgs e)
{
PrintDocument pd = new PrintDocument();
pd.PrintPage += new PrintPageEventHandler(pd_PrintPage);
pd.Print();
}

private int LineIndex = 0;

private void pd_PrintPage(object sender, PrintPageEventArgs e)
{
int LinesPerPage = 0, y = 0, count = 0;
int LeftMargin = e.MarginBounds.Left;
int TopMargin = e.MarginBounds.Top;

using (Font printFont = new Font("Arial", 10))
{
LinesPerPage = (int)(e.MarginBounds.Height /
printFont.GetHeight(e.Graphics));
while ((count < LinesPerPage) && (LineIndex < TextLines.Length))
{
y = (int) (TopMargin + (count * printFont.GetHeight(e.Graphics)));
e.Graphics.DrawString(TextLines[LineIndex], printFont, Brushes.Black,
LeftMargin, y, new StringFormat());
++count;
++LineIndex;
}
}

e.HasMorePages = LineIndex < TextLines.Length;
}
}

================================================

by **raylopez99** » Sat, 30 Aug 2008 19:16:05 GMT

On Aug 29, 4:29爌m, "Family Tree Mike"

Thanks FTM. I will go over this code and if I have any questions or
improvements will post back. I notice though it does have a way of
breaking out of the loop by counting lines and text length that seems
more robust than the web example I originally posted and modified, so
hopefully I'll get this to work.

RL

by **raylopez99** » Sun, 31 Aug 2008 00:25:42 GMT

ere is the complete, updated program, and it works fine, including
the margins. Don't forget to set your textbox "MaxLength" property
(found in the Designer Wizard properties tab) to something bigger than
the default 32k if you intend to print lots of pages).

The important change was here: textBox1.Text = mylocalstring; //works
now, problem solved

Making this one line change enabled the program to avoid printing an
infinite loop.

This code adapted from these two sources (mainly the first source,
which had the small bug I mention above, and did not quite work):

//adapted from http://www.expresscomputeronline.com/20030915/techspace02.shtml
//main code from here // an excellent example, too bad it doesn't work
for me the first time (without the changes made now--now it works)
// and from Chris Sells, Chapter 8, Printing in WinForms
//Chris Sells Chap 8 is very very simplistic--in retrospect I suspect
because printing is difficult and he didn't want to spend time on it

//SOF
using System;
using System.Collections.Generic;
using System.ComponentModel; //I don't think you need some of these
using directives, but I think you need .Printing for sure
using System.Data;
using System.Drawing;
using System.Linq; //not needed in this example
using System.Text;
using System.IO;
using System.Windows.Forms;
using System.Diagnostics;
using System.Drawing.Printing;

namespace MyNameSpace01
{
public partial class MyFormTextBox : Form
{
string myPrintFilename;
StringBuilder myGlobalString;
Font f;
SolidBrush b;
StringFormat strformat;
string printstr;
int Char_out_, Lines_out;
bool DirtyBool_not_used;
bool bool_YorN_Printed;

// StreamReader reader;

public MyFormTextBox()
{
InitializeComponent();
myGlobalString = new StringBuilder("");
strformat = new StringFormat();
DirtyBool_not_used = true;
bool_YorN_Printed = false;

}

private void myPrintButton_Click(object sender, EventArgs e)
{
if (myPrintFilename != "")
{
DirtyBool_not_used = false;
bool_YorN_Printed = false;
int length_myTextBox = myTextBox.Text.Length;
myGlobalString = new StringBuilder(length_myTextBox +
1);

myGlobalString.Append(myTextBox.Text); ////*&%
this.printDocument1.DocumentName =
this.myPrintFilename;

this.printDocument1.Print();
}
else
{
DirtyBool_not_used = true;
}

}

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

RectangleF myrect = new
RectangleF(e.MarginBounds.Left,e.MarginBounds.Top,
e.MarginBounds.Width,e.MarginBounds.Height);
SizeF sz = new SizeF(e.MarginBounds.Width,
e.MarginBounds.Height);

string string_temp = myTextBox.Text;

string mylocalstring = myTextBox.Text; //also equivalent
it turns out--same thing!//works

e.Graphics.MeasureString(mylocalstring, f, sz, strformat,
out Char_out_, out Lines_out);

printstr = mylocalstring.Substring(0,Char_out_);
// myTextBox.Text = printstr; //only prints two pages-error

by **raylopez99** » Sun, 31 Aug 2008 01:16:34 GMT

Minor 'bug' fix of sorts: replace - sb.Append(s);

with:

sb.AppendLine(s);

if you want line breaks preserved in any text you import from a file.

RL

CSharp/C#, Print Documents PrintDocument-- (PrintDocument is much harder than it looks)

CSharp/C# >> Print Documents PrintDocument-- (PrintDocument is much harder than it looks)

CSharp/C# >> Print Documents PrintDocument-- (PrintDocument is much harder than it looks)

CSharp/C# >> Print Documents PrintDocument-- (PrintDocument is much harder than it looks)

CSharp/C# >> Print Documents PrintDocument-- (PrintDocument is much harder than it looks)

CSharp/C# >> Print Documents PrintDocument-- (PrintDocument is much harder than it looks)