DevForce Community Forum : InvokeServerMethodAsync http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : InvokeServerMethodAsync Thu, 16 Apr 2026 10:45:56 -700 Tue, 28 Jun 2011 13:24:40 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=2801 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ InvokeServerMethodAsync : Don't worry about... http://www.ideablade.com/forum/forum_posts.asp?TID=2801&PID=11138#11138 Author: gregweb
Subject: 2801
Posted: 28-Jun-2011 at 1:24pm

Don't worry about this, I got it resolved.  ]]> Tue, 28 Jun 2011 13:24:40 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2801&PID=11138#11138 InvokeServerMethodAsync : I have a RPC that I call which... http://www.ideablade.com/forum/forum_posts.asp?TID=2801&PID=11133#11133 Author: gregweb
Subject: 2801
Posted: 27-Jun-2011 at 7:19pm

I have a RPC that I call which passes up an entity.  On the server, the code looks like this:
[AllowRpc]
public static object Test1(IPrincipal pPrincipal, EntityManager pPm, params Object[] pArgs)
{
Customer cust = (Customer)pArgs[0];
cust.ContactName = "Peter Pan";
pPm.SaveChanges{new [] cust });

return cust;

}
On the line where Peter Pan is assigned to the ContactName, an error of Object Ref not set to an instance of an object error is thrown. 
 
If I add a line which attaches it to the pPm, it no longer throws an error.  This would be fine, except in some instances, there are related items already attached to the entity. In this case, when it gets to the line which attaches the entity, it throws an error, saying that the related entity is already attached to the Entity Manager.  It doesn't make any sense to me why the main entity would not be attached, and the related entity would be attached.  Before the RPC call is made, the entity is attached to an EntityManager and saved, so it seems like it should already be attached.  The related entities are also saved and attached so it seems like they should come accross the wire in the same entity state as the cust.
 
I have been unable to resolve this issue.
Greg
]]> Mon, 27 Jun 2011 19:19:46 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2801&PID=11133#11133