Question

enter code here我在VS2010中编写.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connectionsinfo，请使用以下代码：

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

如果我尝试检查连接“打开”，则出现以下错误：

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

Assemblies EntityFramework和EntityFramework.SqlServer与DAL-Class位于同一文件夹中，EntityFramework.SqlServer使用EntityFramework.dll构建

有人可以帮助我吗？

EF6和缺少的提供商

0 个答案: