topic Re: Creating a Proxy Page for the Map Resources in ArcGIS API for Silverlight Questions

Creating a Proxy Page for the Map Resources

JacekSobolewski — Mon, 13 Sep 2010 19:29:24 GMT

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

Re: Creating a Proxy Page for the Map Resources

DarinaTchountcheva — Tue, 14 Sep 2010 14:08:51 GMT

Hi Jacek,

Here is how you set up a proxy page:

http://help.arcgis.com/en/webapi/silverlight/help/Secure_services.htm

It is under "Using ArcGIS Server" topic in the Silverlight API help:

http://help.arcgis.com/en/webapi/silverlight/help/index.html

Once you set up your proxy page (config and ashx), add proxyUrl to your services.
I haven't used proxy page for your purpose, but I it is worth to give it a try. I think, it will work.

Good Luck!

Re: Creating a Proxy Page for the Map Resources

JacekSobolewski — Tue, 14 Sep 2010 14:12:16 GMT

Thank you!

Jacek

Re: Creating a Proxy Page for the Map Resources

stefanschlaefli — Wed, 15 Dec 2010 08:09:09 GMT

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

Re: Creating a Proxy Page for the Map Resources

JacekSobolewski — Wed, 15 Dec 2010 12:01:20 GMT

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.

Jacek

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