I've seen several possible solutions to this, but none have worked for me.
After adding a ADO.NET Entity Data Model to my .Net Forms C# web project, I am unable to use it.
Perhaps I made a mistake adding it? The name of the file added is QcFormData.edmx.
In my code, perhaps I'm instantiating it incorrectly? I tried adding the line:
QcFormDataContainer db = new QcFormDataContainer();
It appears in Intellisense, but when compiling I get the error :
Error 13 The type or namespace name 'QcFormDataContainer' could not be found (are you missing a using directive or an assembly reference?)
I've followed the suggestions that I found online that did not help:
1) made sure there is "using System.Data.Entity"
2) made sure the dll exists.
3) made sure the reference exists.
4) one post said use using System.Web.Data.Entity; but I do not see that available.
What am I missing?
QcFormData.edmx
<?xml version="1.0" encoding="utf-8"?>
<edmx:Edmx Version="3.0" xmlns:edmx="http://schemas.microsoft.com/ado/2009/11/edmx">
<!--
EF Runtime content -->
<edmx:Runtime>
<!-- SSDL content -->
<edmx:StorageModels>
<Schema Namespace="MyCocoModel.Store" Alias="Self" Provider="System.Data.SqlClient" ProviderManifestToken="2008" xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator" xmlns="http://schemas.microsoft.com/ado/2009/11/edm/ssdl">
<EntityContainer Name="MyCocoModelStoreContainer">
<EntitySet Name="QcFieldValues" EntityType="MyCocoModel.Store.QcFieldValues" store:Type="Tables" Schema="dbo" />
</EntityContainer>
<EntityType Name="QcFieldValues">
<Key>
<PropertyRef Name="ID" />
</Key>
<Property Name="ID" Type="int" Nullable="false" StoreGeneratedPattern="Identity" />
<Property Name="FieldID" Type="nvarchar" MaxLength="100" />
<Property Name="FieldValue" Type="nvarchar" MaxLength="100" />
<Property Name="DateTimeAdded" Type="datetime" />
<Property Name="OrderReserveNumber" Type="nvarchar" MaxLength="50" />
</EntityType>
</Schema>
</edmx:StorageModels>
<!-- CSDL content -->
<edmx:ConceptualModels>
<Schema Namespace="MyCocoModel" Alias="Self" p1:UseStrongSpatialTypes="false" xmlns:annotation="http://schemas.microsoft.com/ado/2009/02/edm/annotation" xmlns:p1="http://schemas.microsoft.com/ado/2009/02/edm/annotation" xmlns="http://schemas.microsoft.com/ado/2009/11/edm">
<EntityContainer Name="MyCocoEntities" p1:LazyLoadingEnabled="true">
<EntitySet Name="QcFieldValues" EntityType="MyCocoModel.QcFieldValue" />
</EntityContainer>
<EntityType Name="QcFieldValue">
<Key>
<PropertyRef Name="ID" />
</Key>
<Property Name="ID" Type="Int32" Nullable="false" p1:StoreGeneratedPattern="Identity" />
<Property Name="FieldID" Type="String" MaxLength="100" Unicode="true" FixedLength="false" />
<Property Name="FieldValue" Type="String" MaxLength="100" Unicode="true" FixedLength="false" />
<Property Name="DateTimeAdded" Type="DateTime" Precision="3" />
<Property Name="OrderReserveNumber" Type="String" MaxLength="50" Unicode="true" FixedLength="false" />
</EntityType>
</Schema>
</edmx:ConceptualModels>
<!-- C-S mapping content -->
<edmx:Mappings>
<Mapping Space="C-S" xmlns="http://schemas.microsoft.com/ado/2009/11/mapping/cs">
<EntityContainerMapping StorageEntityContainer="MyCocoModelStoreContainer" CdmEntityContainer="MyCocoEntities">
<EntitySetMapping Name="QcFieldValues">
<EntityTypeMapping TypeName="MyCocoModel.QcFieldValue">
<MappingFragment StoreEntitySet="QcFieldValues">
<ScalarProperty Name="ID" ColumnName="ID" />
<ScalarProperty Name="FieldID" ColumnName="FieldID" />
<ScalarProperty Name="FieldValue" ColumnName="FieldValue" />
<ScalarProperty Name="DateTimeAdded" ColumnName="DateTimeAdded" />
<ScalarProperty Name="OrderReserveNumber" ColumnName="OrderReserveNumber" />
</MappingFragment>
</EntityTypeMapping>
</EntitySetMapping>
</EntityContainerMapping>
</Mapping>
</edmx:Mappings>
</edmx:Runtime>
<!--
EF Designer content (DO NOT EDIT MANUALLY BELOW HERE) -->
<Designer xmlns="http://schemas.microsoft.com/ado/2009/11/edmx">
<Connection>
<DesignerInfoPropertySet>
<DesignerProperty Name="MetadataArtifactProcessing" Value="EmbedInOutputAssembly" />
</DesignerInfoPropertySet>
</Connection>
<Options>
<DesignerInfoPropertySet>
<DesignerProperty Name="ValidateOnBuild" Value="true" />
<DesignerProperty Name="EnablePluralization" Value="True" />
<DesignerProperty Name="IncludeForeignKeysInModel" Value="True" />
<DesignerProperty Name="CodeGenerationStrategy" Value="None" />
</DesignerInfoPropertySet>
</Options>
<!-- Diagram content (shape and connector positions) -->
<Diagrams></Diagrams>
</Designer>
</edmx:Edmx>
