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POEntity Framework with 'Get' Stored Procedure that returns Entities
 

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  1. POEntity Framework with 'Get' Stored Procedure that returns Entities
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    <p>I am attempting to execute a stored procedure that returns data with exactly the same columns as that of a table Entity I have in my project. I set the 'Returns a Collection Of' property in the 'Add Function Import' dialog to my entity type.</p> <p>I get a NullReferenceException error when executing the stored procedure and on further digging it seems that it is because the 'EntityKey' property is missing. Is there anything I can do to tell it to ignore those special properties of the Entity?</p> <p>I already have a partial class for that entity with '[ScaffoldColumn(false)]' but that doesn't seem to matter.</p> <p>Cheers, Nick</p> <p>EDIT:</p> <p>Here is the stack trace:</p> <blockquote> <p>[NullReferenceException: Object reference not set to an instance of an object.] System.Data.EntityKey.AddHashValue(Int32 hashCode, Object keyValue) +36 System.Data.EntityKey.GetHashCode() +7696654 System.Collections.Generic.GenericEqualityComparer<code>1.GetHashCode(T obj) +23 System.Collections.Generic.Dictionary</code>2.FindEntry(TKey key) +70 System.Collections.Generic.Dictionary<code>2.TryGetValue(TKey key, TValue&amp; value) +17 System.Data.Objects.ObjectStateManager.TryGetEntityEntry(EntityKey key, EntityEntry&amp; entry) +111 System.Data.Common.Internal.Materialization.Shaper.HandleEntityAppendOnly(Func</code>2 constructEntityDelegate, EntityKey entityKey, EntitySet entitySet) +102 lambda_method(Closure , Shaper ) +460 System.Data.Common.Internal.Materialization.Coordinator<code>1.ReadNextElement(Shaper shaper) +170 System.Data.Common.Internal.Materialization.SimpleEnumerator.MoveNext() +84 System.Collections.Generic.List</code>1..ctor(IEnumerable<code>1 collection) +406 System.Linq.Enumerable.ToList(IEnumerable</code>1 source) +58 TWAgencySpend.Controllers.ReportsController.Advertising(Nullable<code>1 agencyId, Nullable</code>1 businessUnitId) in C:\dasdsd\Controllers\ReportsController.cs:72 lambda_method(Closure , ControllerBase , Object[] ) +190 System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +51 System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary<code>2 parameters) +409 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary</code>2 parameters) +52 System.Web.Mvc.&lt;>c__DisplayClassd.b__a() +127 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func<code>1 continuation) +436 System.Web.Mvc.&lt;&gt;c__DisplayClassf.&lt;InvokeActionMethodWithFilters&gt;b__c() +61 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList</code>1 filters, ActionDescriptor actionDescriptor, IDictionary<code>2 parameters) +305 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +830 System.Web.Mvc.Controller.ExecuteCore() +136 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +111 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +39 System.Web.Mvc.&lt;&gt;c__DisplayClass8.&lt;BeginProcessRequest&gt;b__4() +65 System.Web.Mvc.Async.&lt;&gt;c__DisplayClass1.&lt;MakeVoidDelegate&gt;b__0() +44 System.Web.Mvc.Async.&lt;&gt;c__DisplayClass8</code>1.b__7(IAsyncResult _) +42 System.Web.Mvc.Async.WrappedAsyncResult`1.End() +141 System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +54 System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +52 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8836913 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously) +184</p> </blockquote> <p>Updated: Here is the item in the SSDL for the function:</p> <pre><code> &lt;Function Name="GetAgencyReport" Aggregate="false" BuiltIn="false" NiladicFunction="false" IsComposable="false" ParameterTypeSemantics="AllowImplicitConversion" Schema="dbo"&gt; &lt;Parameter Name="AgencyId" Type="int" Mode="In" /&gt; &lt;Parameter Name="Year" Type="int" Mode="In" /&gt; &lt;/Function&gt; </code></pre> <p>and here is the call:</p> <pre><code>reportsViewModel.AgencyReportData = twAgencySpendEntities.GetAgencyReport(agencyId.Value, 2010).ToList(); </code></pre> <p>and here is the key for my Entity:</p> <pre><code>&lt;EntityType Name="AdvertisingData"&gt; &lt;Key&gt; &lt;PropertyRef Name="AgencyId" /&gt; &lt;PropertyRef Name="BusinessUnitId" /&gt; &lt;PropertyRef Name="Month" /&gt; &lt;PropertyRef Name="Year" /&gt; &lt;/Key&gt; &lt;Property Name="AgencyId" Type="int" Nullable="false" /&gt; &lt;Property Name="BusinessUnitId" Type="int" Nullable="false" /&gt; &lt;Property Name="Month" Type="int" Nullable="false" /&gt; &lt;Property Name="Year" Type="int" Nullable="false" /&gt; ... </code></pre>
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    1. PO
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    1. PTQuestion
    1. USNick Reeve
    1. USNick Reeve
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    1. This table or related slice is empty.
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      1. POEntity Framework with 'Get' Stored Procedure that returns Entities
      1. USSonic Soul
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    2. VO
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      1. POEntity Framework with 'Get' Stored Procedure that returns Entities
      1. USLuca Cestola
      1. VTFavorite
    1. COCan you show the stack?
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      1. POEntity Framework with 'Get' Stored Procedure that returns Entities
      1. USCraig Stuntz
    2. CODo you have a piece of the code? Because most of the time this will lead to a not instantiated object.
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      1. POEntity Framework with 'Get' Stored Procedure that returns Entities
      1. USpipelinecache
    3. COHow is the key mapped in EDMX? I.e., what is the `<Key>` value in SSDL for this proc?
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      1. POEntity Framework with 'Get' Stored Procedure that returns Entities
      1. USCraig Stuntz
 

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