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Printing to fit the page width

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GridView
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Ludwig
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Ludwig asked on 15 Apr 2011, 01:01 PM
Hi,

I have a grid, that I want to print, but is has to scale to fit the paper. I tried the printing example at http://www.telerik.com/community/code-library/wpf/gridview/radgridview-print-and-print-preview.aspx, but as my grid is too wide, it prints it on two pages.

So how can I scale the grid to the paper's width, so that the grid is not spread over multiple pages?

Thanks,
L

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Ludwig
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answered on 29 Apr 2011, 07:10 PM
no solution for this?
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Vlad
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answered on 02 May 2011, 07:02 AM
Hi,

You can find the full code of the printing in the demo itself since this is not a built-in feature. For example in PrintExtensions.cs ToFixedDocument() extension method the grid is measured with infinity:
...
element.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
element.Arrange(new Rect(new Point(0, 0), element.DesiredSize));

...

You can modify this to fit your needs. 

Kind regards,
Vlad
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Ludwig
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answered on 03 May 2011, 03:41 PM
ok, copy-pasted the code from http://www.telerik.com/community/code-library/wpf/gridview/radgridview-print-and-print-preview.aspx and changed the ToFixedDocument as follows:

 static FixedDocument ToFixedDocument(FrameworkElement element, PrintDialog dialog, PageOrientation orientation = PageOrientation.Portrait)
        {
            // need to do this, otherwise 'Specified element is already the logical child of another element. Disconnect it first.' occurs
            foreach (var col in (element as RadGridView).Columns)
            {
                col.Header = null;
            }

            dialog.PrintTicket.PageOrientation = orientation;
            PrintCapabilities capabilities = dialog.PrintQueue.GetPrintCapabilities(dialog.PrintTicket);
            Size pageSize = new Size(dialog.PrintableAreaWidth, dialog.PrintableAreaHeight);
            Size extentSize = new Size(capabilities.PageImageableArea.ExtentWidth, capabilities.PageImageableArea.ExtentHeight);

            FixedDocument fixedDocument = new FixedDocument();
            
            // Code to scale the grid to fit page width
            // Get scale of the print wrt to screen of WPF visual
            double scale = Math.Min(capabilities.PageImageableArea.ExtentWidth / element.ActualWidth, capabilities.PageImageableArea.ExtentHeight / element.ActualHeight);
            // Transform the Visual to scale
            element.LayoutTransform = new ScaleTransform(scale, scale);
            // Get the size of the printer page
            Size sz = new Size(capabilities.PageImageableArea.ExtentWidth, capabilities.PageImageableArea.ExtentHeight);
            // Update the layout of the visual to the printer page size.
            element.Measure(sz);
            element.Arrange(new Rect(new Point(capabilities.PageImageableArea.OriginWidth, capabilities.PageImageableArea.OriginHeight), sz));
                        ...

But at the line 'element.Measure(sz);' it crashed with the error: 'Layout measurement override of element 'Telerik.Windows.Controls.RadGridView' should not return NaN values as its DesiredSize.'

Do you know what is going on here?

Edit: I narrowed it down to the fact that ActualWidth of the grid seems to be 0??
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Vic
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answered on 22 Jul 2012, 10:51 PM
Hello,
Did you find a successful way to scale the grid to fit the page width?
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Vlad
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Vic
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