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Versioning Protocol of Astoria II
28 September 09 09:17 PM | Peter Qian | 3 Comments   
In my previous post on the protocol versioning scheme for Astoria, I've explained the two HTTP headers DataServiceVersion and MaxDataServiceVersion. These headers are used by the server and client library to determine how and what to communicate with Read More...
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Working with Local Entities in Astoria Client
23 April 09 10:23 PM | Peter Qian | 1 Comments   
Although the Astoria client is really designed to query data existing in some remote service location, it does keep a local copy of all entities it has seen. If the MergeOption is not set to NoTracking, you can find all of the entities currently been Read More...
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Versioning Protocol of Astoria
02 April 09 09:21 PM | Peter Qian | 0 Comments   
Now that CTP1 of Astoria has been made public, we have two different versions of server and client that can interact with each other. How does Astoria handle the versioning for the various possible interactions? While this question probably does not concern Read More...
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Safe Resource Not Found (404) Exception Handling in ADO.net Data Service Client
20 March 09 05:55 AM | Peter Qian | 1 Comments   
There are many situations where you may encounter an undesired 404 “Resource Not Found” exception while querying against an ADO.net Data Service. For example, you may be writing a Linq query where the filter criteria is specified at runtime by the end Read More...
Getting Row Count in ADO.Net Data Services
18 March 09 02:02 AM | Peter Qian | 3 Comments   
The recent CTP release of ADO.Net Data Services (Astoria) V1.5 contains a nice feature that allows result set counting on the server side. In this blog post, I’ll go over the various ways you can benefit from this feature in your data service. Type of Read More...
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