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enter code here我在 VS2010 中编写了一个 .NET 4.0 应用程序并将使用 EF6。这是我的 App.Config：

<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral" requirePermission="false" />

要更改连接信息，我使用以下代码：

Public ReadOnly Property SqlConnectionString As String
    Get
        With sqlBuilder

            .DataSource = ServerName
            .InitialCatalog = DatabaseName

            If DatabaseUserName.Length = 0 Then
                .IntegratedSecurity = True
            Else
                .IntegratedSecurity = False
                .UserID = DatabaseUserName
                .Password = DatabasePassword
            End If

            sqlBuilder.MultipleActiveResultSets = True

        End With

        Return sqlBuilder.ToString & ";App=EntityFramework"
    End Get
End Property

Public ReadOnly Property EntityConnectionString As String
    Get
        Dim _metaData As String = ""

        With entityBuilder
            .Provider = ProviderName
            .ProviderConnectionString = SqlConnectionString

            _metaData = "res://" & DatabaseModelAssembly & "/" & DatabaseModelName & ".csdl|"
            _metaData = _metaData & "res://" & DatabaseModelAssembly & "/" & DatabaseModelName & ".ssdl|"
            _metaData = _metaData & "res://" & DatabaseModelAssembly & "/" & DatabaseModelName & ".msl"

            .Metadata = _metaData
        End With

        Return entityBuilder.ToString

    End Get
End Property

Public Function ConnectionTest() As Boolean
    Try

        Dim conn As New EntityConnection(EntityConnectionString)
        conn.Open()
        Console.WriteLine("Just testing the connection.")
        conn.Close()

        Return True

    Catch ex As Exception

        Return False

    End Try

End Function

如果我尝试使用“打开”检查连接，则会出现以下错误：

Data.SqlClient' ADO.NET provider. Make sure the provider is registered in the 'entityFramework' section of the application config file

程序集 EntityFramework 和 EntityFramework.SqlServer 与 DAL-Class 位于同一文件夹中，并且 EntityFramework.SqlServer 是使用 EntityFramework.dll 构建的

有人可以帮助我吗？

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