Обектът на Oracle в рамката на VS entity не актуализира първичния ключ в кода

Отворете файла .edmx с XML редактора и потърсете секцията, която започва със следния ред:

<!-- SSDL content -->

По-долу трябва да има етикет EntityType и в него е дефиниция на таблицата на базата данни. Уверете се, че свойството за колоната ви за ID има StoreGeneratedPattern="Identity" в него.

Под този SSDL раздел има CSDL раздел, който изглежда подобно, но дефинира C# обекта, който представлява този обект. Визуалният дизайнер изглежда само попълва StoreGeneratedPattern в този раздел, но не и секцията SSDL.

РЕДАКТИРАНЕ С ПРОБА

Ето примерен EDMX файл за обект Employee, без нищо освен свойство ID, FirstName и LastName. Идентификаторът е полето, което искате да се генерира автоматично от базата данни. Имайте предвид, че има две различни места, където StoreGeneratedPattern е необходим.

<?xml version="1.0" encoding="utf-8"?>
<edmx:Edmx Version="2.0" xmlns:edmx="http://schemas.microsoft.com/ado/2008/10/edmx">
  <!-- EF Runtime content -->
  <edmx:Runtime>
    <!-- SSDL content -->
    <edmx:StorageModels>
      <Schema Namespace="Store" Alias="Self" Provider="Oracle.DataAccess.Client" ProviderManifestToken="10g"
              xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator"
              xmlns="http://schemas.microsoft.com/ado/2009/02/edm/ssdl">
        <EntityContainer Name="StoreContainer">
          <EntitySet Name="EMPLOYEE" EntityType="Store.EMPLOYEE" store:Type="Tables" Schema="TESTSPACE" />
        </EntityContainer>
        <EntityType Name="EMPLOYEE">
          <Key>
            <PropertyRef Name="ID" />
          </Key>
          <!-- The below property requires StoreGeneratedPattern="Identity" -->
          <Property Name="ID" Type="number" StoreGeneratedPattern="Identity" Nullable="false" Precision="10" />
          <Property Name="FIRST_NAME" Type="varchar2" MaxLength="255" />
          <Property Name="LAST_NAME" Type="varchar2" MaxLength="255" />
        </EntityType>
      </Schema>
    </edmx:StorageModels>
    <!-- CSDL content -->
    <edmx:ConceptualModels>
      <Schema xmlns="http://schemas.microsoft.com/ado/2008/09/edm"
              xmlns:cg="http://schemas.microsoft.com/ado/2006/04/codegeneration"
              xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator" Namespace="Model" Alias="Self"
              xmlns:annotation="http://schemas.microsoft.com/ado/2009/02/edm/annotation">
        <EntityContainer Name="ModelContainer" annotation:LazyLoadingEnabled="true">
          <EntitySet Name="Employees1" EntityType="Model.Employee" />
        </EntityContainer>
        <EntityType Name="Employee">
          <Key>
            <PropertyRef Name="ID" />
          </Key>
          <!-- The below property requires StoreGeneratedPattern="Identity" -->
          <Property Type="Int32" Name="ID" Nullable="false" annotation:StoreGeneratedPattern="Identity" />
          <Property Type="String" Name="FirstName" MaxLength="255" FixedLength="false" Unicode="false" />
          <Property Type="String" Name="LastName" MaxLength="255" FixedLength="false" Unicode="false" />
        </EntityType>
      </Schema>
    </edmx:ConceptualModels>
    <!-- C-S mapping content -->
    <edmx:Mappings>
      <Mapping Space="C-S" xmlns="http://schemas.microsoft.com/ado/2008/09/mapping/cs">
        <EntityContainerMapping StorageEntityContainer="StoreContainer" CdmEntityContainer="ModelContainer">
          <EntitySetMapping Name="Employees1">
            <EntityTypeMapping TypeName="Model.Employee">
              <MappingFragment StoreEntitySet="EMPLOYEE">
                <ScalarProperty Name="LastName" ColumnName="LAST_NAME" />
                <ScalarProperty Name="FirstName" ColumnName="FIRST_NAME" />
                <ScalarProperty Name="ID" ColumnName="ID" />
              </MappingFragment>
            </EntityTypeMapping>
          </EntitySetMapping>
        </EntityContainerMapping>
      </Mapping>
    </edmx:Mappings>
  </edmx:Runtime>
  <!-- EF Designer content (DO NOT EDIT MANUALLY BELOW HERE) -->
  <edmx:Designer xmlns="http://schemas.microsoft.com/ado/2008/10/edmx">
    <edmx:Connection>
      <DesignerInfoPropertySet>
        <DesignerProperty Name="MetadataArtifactProcessing" Value="EmbedInOutputAssembly" />
      </DesignerInfoPropertySet>
    </edmx:Connection>
    <edmx:Options>
      <DesignerInfoPropertySet>
        <DesignerProperty Name="ValidateOnBuild" Value="true" />
        <DesignerProperty Name="EnablePluralization" Value="True" />
        <DesignerProperty Name="IncludeForeignKeysInModel" Value="True" />
      </DesignerInfoPropertySet>
    </edmx:Options>
    <!-- Diagram content (shape and connector positions) -->
    <edmx:Diagrams>
      <Diagram Name="Model">
        <EntityTypeShape EntityType="Model.Employee" Width="1.5" PointX="0.75" PointY="0.75"
                         Height="1.4279589843749996" />
      </Diagram>
    </edmx:Diagrams>
  </edmx:Designer>
</edmx:Edmx>