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POHow to Print Preview when using a DocumentPaginator to print?
 

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  1. POHow to Print Preview when using a DocumentPaginator to print?
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    <p>I'm using a class I've derived from DocumentPaginator (see below) to print simple (text only) reports from a WPF application. I've got it so that everything prints correctly, <strong>But how do I get it to do a print preview before printing?</strong> I have a feeling I need to use a DocumentViewer but I can't figure out how.</p> <p>Here's my Paginator Class:</p> <pre><code>public class RowPaginator : DocumentPaginator { private int rows; private Size pageSize; private int rowsPerPage; public RowPaginator(int rows) { this.rows = rows; } public override DocumentPage GetPage(int pageNumber) { int currentRow = rowsPerPage * pageNumber; int rowsToPrint = Math.Min(rowsPerPage, rows - (rowsPerPage * pageNumber - 1)); var page = new PageElementRenderer(pageNumber + 1, PageCount, currentRow, rowsToPrint) { Width = PageSize.Width, Height = PageSize.Height }; page.Measure(PageSize); page.Arrange(new Rect(new Point(0, 0), PageSize)); return new DocumentPage(page); } public override bool IsPageCountValid { get { return true; } } public override int PageCount { get { return (int)Math.Ceiling(this.rows / (double)this.rowsPerPage); } } public override Size PageSize { get { return this.pageSize; } set { this.pageSize = value; this.rowsPerPage = PageElementRenderer.RowsPerPage(this.pageSize.Height); if (rowsPerPage &lt;= 0) throw new InvalidOperationException("Page can't fit any rows!"); } } public override IDocumentPaginatorSource Source { get { return null; } } } </code></pre> <p>The PageElementRenderer is just a simple UserControl that displays the data (at the moment just a list of rows).</p> <p>Here's how I use my Row Paginator</p> <pre><code>PrintDialog dialog = new PrintDialog(); if (dialog.ShowDialog() == true) { var paginator = new RowPaginator(rowsToPrint) { PageSize = new Size(dialog.PrintableAreaWidth, dialog.PrintableAreaHeight) }; dialog.PrintDocument(paginator, "Rows Document"); } </code></pre> <p>Sorry for the code dump, but I didn't want to miss something relevant.</p>
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    1. COsee also: http://stackoverflow.com/questions/2322064/how-can-i-produce-a-print-preview-of-a-flowdocument-in-a-wpf-application
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