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POSilverlight4 calling ASMX web service
 

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  1. POSilverlight4 calling ASMX web service
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    <p>I have a Visual Studio solution with a Silverlight project, and a web project which hosts the Silverlight app. The web project also contains an ASMX web service which is called by the Silverlight ap.</p> <p>As described below, certain calls to the web service work fine, and yet others cause a CommunicationException to be thrown, wrapping a WebException - both with the message "The server returned the following error: 'not found'".</p> <p>Firstly, here's my original method, which failed as described above (entity names changed for simplicity):</p> <pre><code>[WebMethod] public Customer GetCustomer(int id) { CustomerDataContext dc = new CustomerDataContext(); return dc.Customers.SingleOrDefault(x =&gt; x.Id == id); } </code></pre> <p>Secondly, to debug the problem I took Linq to SQL and the database out of the picture, and the below code worked fine:</p> <pre><code> [WebMethod] public Customer GetCustomer(int id) { Customer c = new Customer() { ID=1, Name="Bob", History = new EntitySet&lt;CustomerHistory&gt;() }; return c; } </code></pre> <p>Third, thinking about this, one difference between the two methods is that the first one would include values in the customer history. I extended the second method to include this, and it started failing again:</p> <pre><code> [WebMethod] public Customer GetCustomer(int id) { Customer c = new Customer() { ID=1, Name="Bob", History = new EntitySet&lt;CustomerHistory&gt;() }; c.History.Add(new CustomerHistory() { Id=1, CustomerId=1, Text="bla" }); return c; } </code></pre> <p>I'm stuck with regards to how to progress - my current thinking is that this could be a deserialization issue on the Silverlight side, when the object graph is deeper. This rationally doesn't make sense, but I can't think of anything else. I've confirmed that the transfer size and buffer size are big enough (2GB by default).</p> <p>Any pointers would be appreciated.</p>
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      1. POSilverlight4 calling ASMX web service
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    1. COHave you tried to return a list of CustomerHistory only to see if that works?
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      1. USthomasmartinsen
    2. COAre you using a Service Reference, or a Web Reference?
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      1. POSilverlight4 calling ASMX web service
      1. USJohn Saunders
 

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