Hi it is exactly same like any other web app with few differences
- Check if the sytem is online then use server webserver services otherwise use the localhost webservices from clients machine.
- you need to deploy this on every offline client.
Here is some information about offline web app in crm 4.0. I believe the concept will be the same in crm2011.
Microsoft Dynamics CRM 4.0 enables you to write an ASP.NET application and put it on the offline client's Web server. This application can call the offline Web service platform to perform operations against Microsoft Dynamics CRM. These files are deployed
in the [Program Files]\Microsoft Dynamics CRM\Client\res\Web\ISV\[Company Name]\[Application Name]. Typically you can use Windows Installer to distribute these files to clients.
When you execute your code offline there are several things that you need to know:
The organization name. You get this from the Registry.
The port number used by the local Web server. Typically, this is 2525.However, you should always check the registry in case there is an abnormal installation.
The service URLs. You can construct these by concatenating http://localhost + Port Number + the service path.
You always use Integrated Windows Authentication to access the offline Web services, regardless of the authentication type on the server (including Microsoft Dynamics CRM Online). You also don't have to wrap your code with a
CrmImpersonator block. However if you do so, there is no harm. If you write symmetrical code for online/offline, make sure that you don't create the token using the
ExtractCrmAuthenticationToken method because this is not available offline. You may want to check to see if the code is executing offline. One way to do this is to see if the Request.Url.Host is 127.0.0.1.
Here is the link
http://msdn.microsoft.com/en-us/library/dd393301.aspx
I hope this helps.
Amreek singh Senior CRM Consultant CDC Praxa Sydney,Australia http://mscrmshop.blogspot.com/
