EFDataSource Class

An Entity Framework data source.

Namespace: DevExpress.DataAccess.EntityFramework

Assembly: DevExpress.DataAccess.v18.1.dll

Declaration

C#

[XRDesigner("DevExpress.DataAccess.UI.Design.XREFDataSourceDesigner,DevExpress.DataAccess.v18.1.UI", typeof(IDesigner))]
[ToolboxBitmap(typeof(ResFinder), "Bitmaps256.EFDataSource.bmp")]
public class EFDataSource :
    DataComponentBase,
    IListSource,
    IListAdapter,
    ISupportInitialize,
    ITypedList

VB.NET

<ToolboxBitmap(GetType(ResFinder), "Bitmaps256.EFDataSource.bmp")>
<XRDesigner("DevExpress.DataAccess.UI.Design.XREFDataSourceDesigner,DevExpress.DataAccess.v18.1.UI", GetType(IDesigner))>
Public Class EFDataSource
    Inherits DataComponentBase
    Implements IListSource,
               IListAdapter,
               ISupportInitialize,
               ITypedList

Related API Members

The following members accept/return EFDataSource objects:

• EFFiltersCollection.Owner

Remarks

EFDataSource supports the following Entity Framework versions:

• Entity Framework 5.0 and higher.
• Entity Framework Core 1.0 and higher.

Note that the Entity Framework context class passed to an EFConnectionParameters.Source should be public.

Note

To connect to different database types using EFDataSource, you need to install a corresponding data provider. For instance, install the System.Data.SQLite.EF6 data provider to connect to an SQLite database using Entity Framework 6.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the EFDataSource class.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-create-data-access-library-data-sources-at-runtime-t424210/CS/EFDataSourceSnippets/Code.cs#L12

{
    EFDataSource DataSource { get; set; }
    public Test()

Reporting_how-to-provide-aspxreportdesigner-with-the-sqldatasource-objectdatasource-t271722/CS/WebApplication1/Default.aspx.cs#L25

DevExpress.DataAccess.EntityFramework.EFDataSource efds = new DevExpress.DataAccess.EntityFramework.EFDataSource();
GenerateEFDataSource(efds);

how-to-prevent-loading-untrusted-custom-assembly-in-ef-data-model-t408545/CS/EFDataTest/Form1.cs#L9

// Handle this event to decide whether this application allows loading a custom data assembly.
DevExpress.DataAccess.EntityFramework.EFDataSource.BeforeLoadCustomAssemblyGlobal += EFDataSource_BeforeLoadCustomAssemblyGlobal;
// Handle this event to allow loading a custom data assembly when the SnapControl queries the data source.

Reporting_report-designer-for-wpf-how-to-enable-end-users-to-load-custom-assemblies-to-the-t503673/CS/EnableEFBrowseButton/MainWindow.xaml.cs#L12

    InitializeComponent();
    EFDataSource.BeforeLoadCustomAssemblyGlobal += OnBeforeCustomAssemblyLoad;
}

VB.NET

how-to-create-data-access-library-data-sources-at-runtime-t424210/VB/EFDataSourceSnippets/Code.vb#L10

Public Class Test
    Private Property DataSource() As EFDataSource
    Public Sub New()

Reporting_how-to-provide-aspxreportdesigner-with-the-sqldatasource-objectdatasource-t271722/VB/WebApplication1/Default.aspx.vb#L24

Dim efds As New DevExpress.DataAccess.EntityFramework.EFDataSource()
GenerateEFDataSource(efds)

how-to-prevent-loading-untrusted-custom-assembly-in-ef-data-model-t408545/VB/EFDataTest/Form1.vb#L11

' Handle this event to decide whether this application allows loading a custom data assembly.
AddHandler DevExpress.DataAccess.EntityFramework.EFDataSource.BeforeLoadCustomAssemblyGlobal, AddressOf EFDataSource_BeforeLoadCustomAssemblyGlobal
' Handle this event to allow loading a custom data assembly when the SnapControl queries the data source.

Reporting_report-designer-for-wpf-how-to-enable-end-users-to-load-custom-assemblies-to-the-t503673/VB/EnableEFBrowseButton/MainWindow.xaml.vb#L14

    InitializeComponent()
    AddHandler EFDataSource.BeforeLoadCustomAssemblyGlobal, AddressOf OnBeforeCustomAssemblyLoad
End Sub

Implements

IDataComponent

Inheritance

Object

MarshalByRefObject

Component

DevExpress.DataAccess.DataComponentBase

EFDataSource

DashboardEFDataSource

Extension Methods

Show 13 items

Configure(IWizardRunnerContext, ISolutionTypesProvider, IConnectionStringsProvider, IConnectionStorageService, IParameterService)

Configure(IWizardRunnerContext, ISolutionTypesProvider, IConnectionStringsProvider, IConnectionStorageService, IParameterService, IRepositoryItemsProvider)

Configure(IWizardRunnerContext, ISolutionTypesProvider, IConnectionStringsProvider, IConnectionStorageService, IParameterService, IRepositoryItemsProvider, Action<IWizardCustomization<EFDataSourceModel>>)

Configure()

Configure(ConfigureContext)

Configure<TModel>(ConfigureContext, Action<IWizardCustomization<TModel>>)

EditConnection(IWizardRunnerContext, ISolutionTypesProvider, IConnectionStringsProvider, IConnectionStorageService, IParameterService)

EditConnection(IWizardRunnerContext, ISolutionTypesProvider, IConnectionStringsProvider, IConnectionStorageService, IParameterService, Action<IWizardCustomization<EFDataSourceModel>>)

EditConnection()

EditConnection(EditConnectionContext)

EditConnection<TModel>(EditConnectionContext, Action<IWizardCustomization<TModel>>)

EditFilters<TModel>(EditFiltersContext)

EditFilters<TModel>(EditFiltersContext, Action<IWizardCustomization<TModel>>)