In many cases, you will need to check whether the string will fit on the page before you render it. You can use the MeasureString method for that. MeasureString returns a SizeF structure that contains the width and height of the string (in points) when rendered with a given font.
For example, the code below checks to see if a paragraph will fit on the current page and creates a page break if it has to. This will keep paragraphs together on a page:
To write code in Visual Basic
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Private Function RenderParagraph(text As String, font As Font, rect As RectangleF, rectPage As RectangleF) As RectangleF
' Calculate the necessary height.
Dim sz As SizeF = _c1pdf.MeasureString(text, font, rect.Width)
rect.Height = sz.Height
' If it won't fit this page, do a page break.
If rect.Bottom > rectPage.Bottom Then
_c1pdf.NewPage()
rect.Y = rectPage.Top
End If
' Draw the string.
_c1pdf.DrawString(text, font, Brushes.Black, rect)
' Update rectangle for next time.
Rect.Offset(0, rect.Height)
Return rect
End Function
' Use the RenderParagraph method.
Dim font As New Font("Arial", 10)
Dim rectPage As RectangleF = _c1pdf.PageRectangle
rectPage.Inflate(-72, -72)
Dim rect As RectangleF = rectPage
Dim s As String
For Each s In myStringList
rect = RenderParagraph(s, font, rect, rectPage)
Next s
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To write code in C#
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private RectangleF RenderParagraph(string text, Font font, RectangleF rect, RectangleF rectPage)
{
// Calculate the necessary height.
SizeF sz = _c1pdf.MeasureString(text, font, rect.Width);
rect.Height = sz.Height;
// If it won't fit this page, do a page break.
If (rect.Bottom > rectPage.Bottom)
{
_c1pdf.NewPage();
rect.Y = rectPage.Top;
}
// Draw the string.
_c1pdf.DrawString(text, font, Brushes.Black, rect);
// Update rectangle for next time.
Rect.Offset(0, rect.Height);
return rect;
}
// Use the RenderParagraph method.
Font font = new Font("Arial", 10);
RectangleF rectPage = _c1pdf.PageRectangle;
rectPage.Inflate(-72, -72);
RectangleF rect = rectPage;
foreach (string s in myStringList)
{
rect = RenderParagraph(s, font, rect, rectPage);
}
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