</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --> <div id="BeforeHeaderContent"> </div> <div id="HeaderContent"> <div id="ProjectTitle">PDF for WPF and Silverlight</div> <div id="PageTitle"><div id="PageTitleText">Measuring Text</div></div> </div> <div id="AfterHeaderContent"> <!-- Spacing --> <span id="ToggleAllSectionsLink" class="FunctionLink"> <label id="CollapseAllLabel">Collapse All</label> <label id="ExpandAllLabel" style="display: none;">Expand All</label> </span> </div> <div class="BreadcrumbsContainer"><table><tr><td> <a href="PDF for WPF and Silverlight Overview.html">PDF for WPF and Silverlight Overview</a> > <a href="C1Pdf Features.html">Features: PDF for WPF and Silverlight </a> > <a href="AddingText.html">Adding Text</a> > Measuring Text</td></tr></table></div> <div id="BodyContent"> <p class="AutoBodyText">In many cases, you will need to check whether the string will fit on the page before you render it. You can use the <b>C1PdfDocument.MeasureString</b> method for that. <b>C1PdfDocument.MeasureString</b> returns a <b>SizeF</b> structure that contains the width and height of the string (in points) when rendered with a given font.</p> <p class="AutoBodyText">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:</p> <p class="hs-toggler">To write the code in Visual Basic:</p> <div class="hs-toggler-container" style="DISPLAY: none"> <p class="Sample" style="MARGIN-LEFT: 36pt">Private Function RenderParagraph(text As String, font As Font, rect As Rect, rectPage As Rect) As Rect</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> </p> <p class="Sample" style="MARGIN-LEFT: 36pt"> <span style="COLOR: green">' Calculate the necessary height.</span></p> <p class="Sample" style="MARGIN-LEFT: 36pt"> Dim sz As SizeF = _c1pdf.MeasureString(text, font, rect.Width)</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> rect.Height = sz.Height</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> </p> <p class="Sample" style="MARGIN-LEFT: 36pt"> <span style="COLOR: green">' If it won't fit this page, do a page break.</span></p> <p class="Sample" style="MARGIN-LEFT: 36pt"> If rect.Bottom > rectPage.Bottom Then</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> _c1pdf.NewPage()</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> rect.Y = rectPage.Top</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> End If</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> </p> <p class="Sample" style="MARGIN-LEFT: 36pt"> <span style="COLOR: green">' Draw the string.</span></p> <p class="Sample" style="MARGIN-LEFT: 36pt"> _c1pdf.DrawString(text, font, Colors.Black, rect)</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> </p> <p class="Sample" style="MARGIN-LEFT: 36pt"> <span style="COLOR: green">' Update rectangle for next time.</span></p> <p class="Sample" style="MARGIN-LEFT: 36pt"> Rect.Offset(0, rect.Height)</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> Return rect</p> <p class="Sample" style="MARGIN-LEFT: 36pt">End Function</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> </p> <p class="Sample" style="MARGIN-LEFT: 36pt"><span style="COLOR: green">' Use the RenderParagraph method.</span></p> <p class="Sample" style="MARGIN-LEFT: 36pt">Dim font As New Font("Arial", 10)</p> <p class="Sample" style="MARGIN-LEFT: 36pt">Dim rectPage As Rect = _c1pdf.PageRectangle()</p> <p class="Sample" style="MARGIN-LEFT: 36pt">rectPage.Inflate(-72, -72)</p> <p class="Sample" style="MARGIN-LEFT: 36pt">Dim rect As Rect = rectPage</p> <p class="Sample" style="MARGIN-LEFT: 36pt">Dim s As String</p> <p class="Sample" style="MARGIN-LEFT: 36pt">For Each s In myStringList</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> rect = RenderParagraph(s, font, rect, rectPage)</p> <p class="Sample" style="MARGIN-LEFT: 36pt">Next s</p> </div> <p class="hs-toggler">To write the code in C#:</p> <div class="hs-toggler-container" style="DISPLAY: none"> <p class="Sample" style="MARGIN-LEFT: 36pt">private Rect RenderParagraph(string text, Font font, Rect rect, Rect rectPage)</p> <p class="Sample" style="MARGIN-LEFT: 36pt">{</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> <span style="COLOR: green">// Calculate the necessary height.</span></p> <p class="Sample" style="MARGIN-LEFT: 36pt"> SizeF sz = _c1pdf.MeasureString(text, font, rect.Width);</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> rect.Height = sz.Height;</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> </p> <p class="Sample" style="MARGIN-LEFT: 36pt"> <span style="COLOR: green">// If it won't fit this page, do a page break.</span></p> <p class="Sample" style="MARGIN-LEFT: 36pt"> If (rect.Bottom > rectPage.Bottom)</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> {</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> _c1pdf.NewPage();</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> rect.Y = rectPage.Top;</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> }</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> </p> <p class="Sample" style="MARGIN-LEFT: 36pt"> <span style="COLOR: green">// Draw the string.</span></p> <p class="Sample" style="MARGIN-LEFT: 36pt"> _c1pdf.DrawString(text, font, Colors.Black, rect);</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> </p> <p class="Sample" style="MARGIN-LEFT: 36pt"> <span style="COLOR: green">// Update rectangle for next time.</span></p> <p class="Sample" style="MARGIN-LEFT: 36pt"> Rect.Offset(0, rect.Height);</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> return rect;</p> <p class="Sample" style="MARGIN-LEFT: 36pt">}</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> </p> <p class="Sample" style="MARGIN-LEFT: 36pt"><span style="COLOR: green">// Use the RenderParagraph method.</span></p> <p class="Sample" style="MARGIN-LEFT: 36pt">Font font = new Font("Arial", 10);</p> <p class="Sample" style="MARGIN-LEFT: 36pt">Rect rectPage = _c1pdf.PageRectangle();</p> <p class="Sample" style="MARGIN-LEFT: 36pt">rectPage.Inflate(-72, -72);</p> <p class="Sample" style="MARGIN-LEFT: 36pt">Rect rect = rectPage;</p> <p class="Sample" style="MARGIN-LEFT: 36pt">foreach (string s in myStringList)</p> <p class="Sample" style="MARGIN-LEFT: 36pt">{</p> <p class="Sample" style="MARGIN-LEFT: 36pt"> rect = RenderParagraph(s, font, rect, 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