Creating a Proxy Page for the Map Resources

Question

Hi,
I have been working on an application (in SL4) which purpose is to create a PDF file from a visual. The visual (among other things) contains maps that can come from cross domain resources. I use WriteableBitmap class to create a bitmap out of the visual. Unfortunately, WriteableBitmap has a limitation where it will refuse to give pixels of images that come from a domain that is different from the application. I have seen some suggestions that perhaps using a proxy page for the cross domained resources can solve this problem. So my question is: how does one set up a proxy page?
Any suggestions, answers will be greatly appreciated.

Regards,
Jacek Sobolewski

JacekSobolewski · Answer

Stefan,
Yes it did.
Basically, you will do something like this:
http://servername/../proxy.ashx?http://servername/../ServiceName/MapService.

Of course, make sure that your proxy allows a particular service. You can configure a proxy through its configuration file.
Let me know if you have any questions about it.

JacekHi Jacek

I am also trying to create an image of the current map control state. And I experienced the same cross domain issue with the WriteableBitmap class, because of the ArcGIS Online background layers I'm using in the map. Did the approach with the proxy page work?

Cheers 
Stefan

stefanschlaefli · Answer

Hi Jacek

I am also trying to create an image of the current map control state. And I experienced the same cross domain issue with the WriteableBitmap class, because of the ArcGIS Online background layers I'm using in the map. Did the approach with the proxy page work?

Cheers 
Stefan

JacekSobolewski · Answer

Thank you!

Jacek