将System.Data.SqlClient升级到版本4.5.0-preview2后，Dapper抛出System.Data.SqlClient.SqlConnection异常

时间：2017-11-21 19:40:51

标签： c# asp.net asp.net-core dapper asp.net-core-2.0

我最近将我的一个ASP.NET核心应用程序从net461应用程序升级到ASP.NET Core 2.0应用程序，因为过去唯一阻碍我的是System.Transactions（现在支持）。

升级后，访问使用以下内容的任何函数时出现错误：

"types": "./src/app/layout.module.d.ts"

错误：

  

不支持在Ambient交易中登记。

根据我的谷歌研究，我在GitHub上看到了一些与此相关的未解决问题，他们都说将System.Data.SqlClient升级到最新的预发行版将解决问题。

我相信这解决了这个问题，但引起了另一个问题。我在我的项目中使用Dapper v1.50.2，我认为它无法使用System.Data.SqlClient的预发布版本，因为我现在收到以下错误：

  

'System.Data.SqlClient.SqlConnection'的类型初始化程序抛出   例外

有谁知道我如何使用Dapper并摆脱这个Ambient事务错误？当发生这样的错误时，我不确定System.Transactions是如何被移植的。

3 个答案:

答案 0 :(得分：1)

我最近解决了这个问题。 首先，在你的Web.csproj中替换

<PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.5" />

带

 <PackageReference Include="Microsoft.AspNetCore" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Antiforgery" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.ApplicationInsights.HostingStartup" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.Abstractions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.Core" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.Facebook" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.Google" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.MicrosoftAccount" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.OAuth" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.Twitter" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authorization" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authorization.Policy" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.AzureAppServices.HostingStartup" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.AzureAppServicesIntegration" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.CookiePolicy" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Cors" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Cryptography.Internal" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Cryptography.KeyDerivation" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.DataProtection" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.DataProtection.Abstractions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.DataProtection.AzureStorage" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.DataProtection.Extensions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Diagnostics" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Diagnostics.Abstractions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Hosting" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Hosting.Abstractions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Hosting.Server.Abstractions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Html.Abstractions" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Http" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Http.Extensions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Http.Features" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.HttpOverrides" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Identity" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.JsonPatch" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Localization" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Localization.Routing" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.MiddlewareAnalysis" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.Abstractions" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.ApiExplorer" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.Cors" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.DataAnnotations" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.Formatters.Json" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.Formatters.Xml" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.Localization" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.Razor" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.Extensions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.ViewCompilation" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.RazorPages" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.TagHelpers" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Mvc.ViewFeatures" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.NodeServices" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.Owin" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Razor" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Razor.Language" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Razor.Runtime" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.ResponseCaching" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.ResponseCaching.Abstractions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.ResponseCompression" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Rewrite" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Routing" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Routing.Abstractions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Server.HttpSys" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Server.Kestrel.Core" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Server.Kestrel.Https" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Server.Kestrel.Transport.Abstractions" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Session" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.SpaServices" Version="2.0.2" />
<PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.WebSockets" Version="2.0.1" />
<PackageReference Include="Microsoft.AspNetCore.WebUtilities" Version="2.0.1" />
<PackageReference Include="Microsoft.CodeAnalysis.Razor" Version="2.0.1" />
<PackageReference Include="Microsoft.Data.Sqlite" Version="2.0.0" />
<PackageReference Include="Microsoft.Data.Sqlite.Core" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Caching.Redis" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.CommandLine" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.Ini" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.Xml" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.DiagnosticAdapter" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.FileProviders.Abstractions" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.FileProviders.Composite" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.FileProviders.Embedded" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.FileProviders.Physical" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.FileSystemGlobbing" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="2.0.1" />
<PackageReference Include="Microsoft.Extensions.Identity.Core" Version="2.0.1" />
<PackageReference Include="Microsoft.Extensions.Identity.Stores" Version="2.0.1" />
<PackageReference Include="Microsoft.Extensions.Localization" Version="2.0.1" />
<PackageReference Include="Microsoft.Extensions.Localization.Abstractions" Version="2.0.1" />
<PackageReference Include="Microsoft.Extensions.Logging" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Logging.Configuration" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Logging.Console" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Logging.EventSource" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Logging.TraceSource" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.ObjectPool" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Options" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.Primitives" Version="2.0.0" />
<PackageReference Include="Microsoft.Extensions.WebEncoders" Version="2.0.0" />
<PackageReference Include="Microsoft.Net.Http.Headers" Version="2.0.1" />
<PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="2.0.1" />

在这个包引用中，我删除了所有关于EntityFramework和SqlServer缓存的引用。 然后，添加对旧System.Data.SqlClient

的引用 
<PackageReference Include="System.Data.SqlClient" Version="4.3.0" />

希望它有所帮助！

答案 1 :(得分：1)

我想与问题消息分享我的解决方案：

<块引用>

'Microsoft.Data.SqlClient.SqlConnection' 的类型初始值设定项 抛出异常。

问题中还出现了“Microsoft.Data.SqlClient.SqlConnectionFactory”。

这使用 Dapper 或 Microsoft.Data.SqlClient 库出现。 让我告诉你，我有两个 C# 项目：

  1. ConnectionToDB（2 中使用的项目。）
  2. ASP.NET Core 应用

我发现的问题是 1. 有所有必要的库/依赖项可以工作，但由于任何原因都无法正常工作。问题是 Microsoft.Data.SqlClient 也必须在 2. 内才能工作。我不知道为什么，但这可能对任何人都有帮助。

问候！

答案 2 :(得分：0)

使用NuGet程序包管理器并搜索“ System.Data.SqlClient”，安装最新版本，然后异常消失。

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