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POReturn Entity Framework objects over WCF
 

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  1. POReturn Entity Framework objects over WCF
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    <p>We have a problem concerning Entity Framework objects and sending them through WCF. We have a database, and Entity Framework created classes from that database, a 'Wallet' class in this particular situation.</p> <p>We try to transfer a Wallet using this code:</p> <pre><code>public Wallet getWallet() { Wallet w = new Wallet(); w.name = "myname"; w.walletID = 123; return w; } </code></pre> <p>We need to transfer that Wallet class, but it won't work, we always encounter the same exception:</p> <p>"An error occurred while receiving the HTTP response to localhost:8860/ComplementaryCoins.svc. This could be due to the service endpoint binding not using the HTTP protocol. This could also be due to an HTTP request context being aborted by the server (possibly due to the service shutting down). See server logs for more details."</p> <p>We searched on the internet, and there is a possibility that the error is due to the need of serialization of Entity Framework-objects.</p> <p>We have absolutely no idea if this could be the case, and if this is the case, how to solve it. Our DataContract looks like this (very simple):</p> <pre><code>[DataContract] public partial class Wallet { [DataMember] public int getwalletID { get { return walletID; } } [DataMember] public string getname { get { return name; } } } </code></pre> <p>Does anyone ever encountered this problem?</p> <p>EDIT: Our Entity Framework created class looks like this:</p> <pre><code>namespace ComplementaryCoins { using System; using System.Collections.Generic; public partial class Wallet { public Wallet() { this.Transaction = new HashSet&lt;Transaction&gt;(); this.Transaction1 = new HashSet&lt;Transaction&gt;(); this.User_Wallet = new HashSet&lt;User_Wallet&gt;(); this.Wallet_Item = new HashSet&lt;Wallet_Item&gt;(); } public int walletID { get; set; } public string name { get; set; } public virtual ICollection&lt;Transaction&gt; Transaction { get; set; } public virtual ICollection&lt;Transaction&gt; Transaction1 { get; set; } public virtual ICollection&lt;User_Wallet&gt; User_Wallet { get; set; } public virtual ICollection&lt;Wallet_Item&gt; Wallet_Item { get; set; } } } </code></pre> <p>Thanks for helping us.</p>
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    1. USMathias Maes
    1. USMathias Maes
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    1. COCan you **edit the question** to include the code which returns the `Wallet` from the WCF service. Also, this is marked as a `partial` class - is there another half to it?
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    2. COIt is partial, because, like I stated, LINQ already created a Wallet class from our database. I added the code which returns a Wallet.
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      1. USMathias Maes
    3. COLINQ cannot `create a Wallet class` - it is a query language. Are you using something like database-first Entity Framework, or a similar ORM?
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