c# - 中等信任度的 MySql 数据实体 EF6

Question

我们目前通过 Hostgator 使用共享 Windows 服务器。他们强制共享服务器以中等信任度运行。他们在 GAC 中有 MySql.Data.DLL (6.9.7)。问题是他们在 GAC 中没有 MySql.Data.Entity.EF6.DLL，也不会为我安装它。因此，我尝试从 gac 引用 MySql.Data dll，然后从我们的项目引用 MySql.Data.Entity.EF6.dll (6.9.9)。当我这样做时，我收到一个安全错误。我假设这是由于 EF6 dll 需要完全信任所致。有什么办法解决这个问题吗？谢谢

错误:

{"Message":"An error has occurred.","ExceptionMessage":"Request for the permission of type 'System.Security.Permissions.EnvironmentPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.","ExceptionType":"System.Security.SecurityException","StackTrace":" at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet)\r\n at System.Security.CodeAccessSecurityEngine.Check(CodeAccessPermission cap, StackCrawlMark& stackMark)\r\n at System.Security.CodeAccessPermission.Demand()\r\n at System.Environment.GetEnvironmentVariable(String variable)\r\n at MySql.Data.MySqlClient.MySqlConnectAttrs.Is64BitOS()\r\n at MySql.Data.MySqlClient.MySqlConnectAttrs.get_Platform()"}

WebConfig:

<configSections>
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>

<entityFramework>
<providers>
    <provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6, Version=6.9.7.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d"></provider>
</providers>
</entityFramework>
<system.data>
<DbProviderFactories>
    <remove invariant="MySql.Data.MySqlClient" />
    <add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.9.7.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>

<dependentAssembly>
<assemblyIdentity name="MySql.Data" publicKeyToken="c5687fc88969c44d" />
<bindingRedirect oldVersion="0.0.0.0-6.9.9.0" newVersion="6.9.7.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="MySql.Data.Entity.EF6" publicKeyToken="c5687fc88969c44d" />
<bindingRedirect oldVersion="0.0.0.0-6.9.9.0" newVersion="6.9.9.0" />
</dependentAssembly>

Answer 1

我不知道您提到的错误。但我建议您仔细阅读此页面https://dev.mysql.com/doc/connector-net/en/connector-net-entityframework60.html
您的 WebConfig 不是以下格式

<connectionStrings>
    <add name="MyContext" providerName="MySql.Data.MySqlClient"
        connectionString="server=localhost;port=3306;database=mycontext;uid=root;password=********"/>
</connectionStrings>
<entityFramework codeConfigurationType="MySql.Data.Entity.MySqlEFConfiguration, MySql.Data.Entity.EF6">
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework"/>
    <providers>
        <provider invariantName="MySql.Data.MySqlClient"
            type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6"/>
        <provider invariantName="System.Data.SqlClient"
            type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer"/>
    </providers>
</entityFramework>