topic Re: Printing Sample & MapUnits, Scalebar, etc in ArcGIS API for Silverlight Questions

Printing Sample & MapUnits, Scalebar, etc

LanceCrumbliss — Wed, 16 Nov 2011 20:09:41 GMT

Hello All,

I've downloaded and compiled the latest print sample by dbroux.

Using it, I noticed the print to scale functionality didn't work. Poking around I noticed it was because the MapUnits was being detected as "Undefined" by the MapPrinter control. Manually setting that to "Feet" in XAML resolved that. (The Projection is nothing weird, it's a state plane zone) However, two issue still remain:

the scalebar on the printout just shows NaN. I know what the means, but why?

I cannot pan the map in the MapPrinterDialog window. I can zoom in and out with the mouse wheel, but that's it.

I'm sure they're all related.

            <printing:MapPrinterDialog x:Name="MapPrinterDialog" Width="340" Height="405" Background="{x:Null}" Foreground="White" >
                <printing:MapPrinter x:Name="mapPrinterWithDialog" Map="{Binding ElementName=MyMap}" IsActive="{Binding ElementName=btnPrint, Path=IsChecked }" MapUnits="Feet" />
            </printing:MapPrinterDialog>

Re: Printing Sample & MapUnits, Scalebar, etc

DominiqueBroux — Thu, 17 Nov 2011 05:46:15 GMT

the scalebar on the printout just shows NaN. I know what the means, but why?

You likely need to set the 'MapUnit' property of the scalebar control, just as you did for the MapPrinter control.

I cannot pan the map in the MapPrinterDialog window. I can zoom in and out with the mouse wheel, but that's it.

Is there a scrollviewer in your visual tree that could catch the click events?
Try as well by removing the null background you set (Background="{x:Null}" ), this might be the reason the click events are not fired.

Re: Printing Sample & MapUnits, Scalebar, etc

LanceCrumbliss — Thu, 17 Nov 2011 12:18:25 GMT

You likely need to set the 'MapUnit' property of the scalebar control, just as you did for the MapPrinter control.

Ok, where...in the template of the MapPrinter control? EDIT: That's exactly where I changed it and the scalebar works now.

Is there a scrollviewer in your visual tree that could catch the click events?
Try as well by removing the null background you set (Background="{x:Null}" ), this might be the reason the click events are not fired.

Unfortunately, changing the background color had no effect. The MapPrinterDialog control is contained within a custom movable window control (like the "WindowPanel" user control in the Print Sample Project). However, in our version, the ContentPresenter of that control is contained within a ScrollViewer. So yes, I guess there is a ScrollViewer in the Visual Tree. That may be the cause. How can that be resolved (without removing the ScrollViewer from the equation)?

Re: Printing Sample & MapUnits, Scalebar, etc

LanceCrumbliss — Thu, 17 Nov 2011 14:27:37 GMT

Got it working. I created another template for the movable window that didn't have the ContentPresenter in a ScrollViewer and used that for the MapPrinterDialog's parent.