CODEWITHSUNDEEP
c#multilinemultilinestring
Simone Conti
Simone Conti

Reputation: 379

Printing long strings in C# with Graphics.DrawString

Good morning. I have to print some long strings that falls off the margins of my page. I'm not able to split automatically as a multi-line string.

private void pd_PrintPage(object sender, PrintPageEventArgs ev)
{
  ...
  string line ="Condimentum a a ac aenean parturient risus suscipit et orci scelerisque convallis porttitor enim venenatis viverra.Egestas nibh natoque mus etiam a parturient feugiat hendrerit a sagittis viverra dui ante varius lectus arcu."
  float leftMargin = ev.MarginBounds.Left;
  float topMargin = ev.MarginBounds.Top;    
  ev.Graphics.DrawString(line, printFont, Brushes.Black, new RectangleF(leftMargin, yPos, 400.0f, 200.0f));
  ...
}

I tried using the overload with the bounding box specification, as you can see, but the result is a jam of chars on the page, because the lines from the long string is printed over itself.

Is there a quick way to solve this problem?

Thanks

Upvotes: 0

Views: 1147

Answers (1)

Simone Conti
Simone Conti

Reputation: 379

SOLVED I finally solved my problem. It's not so easy to explain how, so I post here a piece of code that shows what I did:

private void pd_PrintPage(object sender, PrintPageEventArgs ev)
    {
        float linesPerPage = 0;
        int count = 0;
        float leftMargin = ev.MarginBounds.Left;
        float topMargin = ev.MarginBounds.Top;
        float printAreaHeight = ev.MarginBounds.Height;
        float printAreaWidth = ev.MarginBounds.Width;
        string line = null;
        float yPos = topMargin;

        int charactersFitted = 0;
        int linesFilled = 0;
        SizeF theSize = new SizeF();
        Font printFont = new Font("Arial", 12, FontStyle.Regular);

        SizeF layoutSize = new SizeF(printAreaWidth, printAreaHeight);

        // Calculate the number of lines per page.
        linesPerPage = printAreaHeight / printFont.GetHeight(ev.Graphics);

        // Print each line of the array.
        while (count < linesPerPage && lineIdx < linesArray.Count())
        {
            line = linesArray[lineIdx++];
            theSize = ev.Graphics.MeasureString(line, printFont, layoutSize, new StringFormat(), out charactersFitted, out linesFilled);
            ev.Graphics.DrawString(line, printFont, Brushes.Black, new RectangleF(50.0F, yPos, theSize.Width, theSize.Height));
            yPos += (1 + linesFilled) * printFont.GetHeight(ev.Graphics);
            count += linesFilled + 1;
         }

         // If more lines exist, print another page.
         if (count > linesPerPage)
            ev.HasMorePages = true;
         else
            ev.HasMorePages = false;
    }

Upvotes: 2

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