topic Re: How do I check if an Url string is valid as a layer? in ArcGIS Runtime SDK for WPF (Retired) Questions

How do I check if an Url string is valid as a layer?

linusang — Thu, 04 Aug 2011 07:39:42 GMT

Given a arbitrary url string.. how do i know if the url is connected successfully and valid to be added to a map?

Thanks

Re: How do I check if an Url string is valid as a layer?

RichardWatson — Fri, 05 Aug 2011 01:04:13 GMT

I am not sure that I understand your question.

When you publish a map service there is a URL for each layer. The way the URL is generated is very deterministic and it includes several elements including the layer indice which is simply the 0 based index of the layer in the map.

Re: How do I check if an Url string is valid as a layer?

linusang — Fri, 05 Aug 2011 08:06:59 GMT

i'm providing a way to allow users to enter any url and add to the map dynamically... i would like to know if the url the user entered is connected(server exists, connection exists, internet connection available), is a valid ArcGIS Server layer, or a KML layer, or a WMS layer, etc.

i would like to verify the url before adding to the Map...

like a web browser.... when you type http://www.yahoo.com.. it is a valid link.. however it is not a valid ArcGIS Map layer......

Re: How do I check if an Url string is valid as a layer?

RichardWatson — Fri, 05 Aug 2011 21:24:31 GMT

I think that you just have to call a REST method on that URL to confirm whether or not it is valid. Look through all the methods available and pick one that makes sense.

Re: How do I check if an Url string is valid as a layer?

linusang — Mon, 08 Aug 2011 02:21:28 GMT

do you have any links of information or source code that demonstrates that functionality?

Re: How do I check if an Url string is valid as a layer?

RichardWatson — Mon, 08 Aug 2011 15:25:13 GMT

http://resources.arcgis.com/ is the place to start.

Re: How do I check if an Url string is valid as a layer?

linusang — Mon, 22 Aug 2011 06:15:21 GMT

Hi, I'm using the HttpWebRequest class to check...

however, how do i know if the HttpWebResponse is a valid ArcGIS Server response?

Re: How do I check if an Url string is valid as a layer?

RichardWatson — Mon, 22 Aug 2011 11:37:39 GMT

Send a request that asks for a response in JSON and see if you get back something valid.

If you don't understand this then play with it using the services directory.