实施 SimpleMembership 时无法找到 .net 数据提供程序异常

Question

我是新手。我正在使用 SimpleMembership 生成注册和登录表。但是，我收到以下异常。

异常

An exception of type 'System.ArgumentException' occurred in System.Data.dll but was not handled in user code

Additional information: Unable to find the requested .Net Framework Data Provider. It may not be installed.

代码

    [AllowAnonymous]
    [HttpGet]
    public ActionResult Register1()
    {
        if (!WebSecurity.Initialized)
        {


            //WebSecurity.InitializeDatabaseConnection("My_Entities", "Users", "Id", "UserName", autoCreateTables: true);
            WebSecurity.InitializeDatabaseConnection("My_Entities", "User", "Id", "Email", autoCreateTables: true);
        }
        return View("Register");
    }
    [AllowAnonymous]
    [HttpPost]
    public ActionResult Register1(FormCollection form)
    {
        WebSecurity.CreateUserAndAccount(form["username"], form["password"], new { DisplayName = form["displayname"], Country = form["country"] });
        Response.Redirect("~/account/login");
        return View();
    }

WEB.CONFIG

<?xml version="1.0" encoding="utf-8"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <!-- 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, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <appSettings>
    <add key="webpages:Version" value="3.0.0.0" />
    <add key="webpages:Enabled" value="false" />
    <add key="PreserveLoginUrl" value="true" />
    <add key="ClientValidationEnabled" value="true" />
    <add key="UnobtrusiveJavaScriptEnabled" value="true" />
  </appSettings>

  <system.web>
    <compilation debug="true" targetFramework="4.5" />
    <httpRuntime targetFramework="4.5" />
    <authentication mode="Forms">
      <forms loginUrl="~/Account/Login" timeout="2880" />
    </authentication>
    <membership defaultProvider="p1">
      <providers>
        <add name="p1" type="WebMatrix.WebData.SimpleMembershipProvider, WebMatrix.WebData" />
      </providers>
    </membership>
    <roleManager enabled="true">
      <providers>
        <add name="p1" type="WebMatrix.WebData.SimpleRoleProvider, WebMatrix.WebData" />
      </providers>
    </roleManager>
    <pages>
      <namespaces>
        <add namespace="System.Web.Helpers" />
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Routing" />
        <add namespace="System.Web.WebPages" />
      </namespaces>
    </pages>
  </system.web>
  <system.webServer>
    <validation validateIntegratedModeConfiguration="false" />
    <handlers>
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <remove name="OPTIONSVerbHandler" />
      <remove name="TRACEVerbHandler" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>
  </system.webServer>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
  <connectionStrings>
    <add name="MY_Entities" connectionString="metadata=res://*/Models.DB.csdl|res://*/Models.DB.ssdl|res://*/Models.DB.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=MYCOMP\MYCOM;initial catalog=MY;persist security info=True;user id=sa;password=1*34;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />

  </connectionStrings>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlCeConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="System.Data.SqlServerCe.4.0" />
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <provider invariantName="System.Data.SqlServerCe.4.0" type="System.Data.Entity.SqlServerCompact.SqlCeProviderServices, EntityFramework.SqlServerCompact" />
    </providers>
  </entityFramework>
</configuration>

Answer 1

请尝试在 web.config 中添加以下配置设置。

<system.data>
<DbProviderFactories>
    <remove invariant="System.Data.SqlServerCe.4.0" />
    <add name="Microsoft SQL Server Compact Data Provider 4.0" invariant="System.Data.SqlServerCe.4.0" description=".NET Framework Data Provider for Microsoft SQL Server Compact" type="System.Data.SqlServerCe.SqlCeProviderFactory, System.Data.SqlServerCe, Version=4.0.0.1, Culture=neutral, PublicKeyToken=89845dcd8080cc91" />
</DbProviderFactories>

Answer 2

所提供的 web.config 文件显示 System.Data.SqlServerCe.4.0 作为 Entity Framework 这部分的数据提供者：

<entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlCeConnectionFactory, EntityFramework">
        <parameters>
            <parameter value="System.Data.SqlServerCe.4.0" />
        </parameters>
    </defaultConnectionFactory>
    <providers>
        <provider invariantName="System.Data.SqlServerCe.4.0" type="System.Data.Entity.SqlServerCompact.SqlCeProviderServices, EntityFramework.SqlServerCompact" />
    </providers>
</entityFramework>

由于错误明确指出请求的数据提供程序尚未安装，请在 %Windows%\Microsoft.NET\Framework\[version number]\Config 中找到 machine.config 文件，以管理员权限编辑它，然后在下面添加这些行（或者如果您我懒得挖掘 machine.config，将它们放入 system.data 元素下的 web.config：

<system.data>
    <DbProviderFactories>
        <remove invariant="System.Data.SqlServerCe.4.0" />
        <add name="Microsoft SQL Server Compact Data Provider 4.0" invariant="System.Data.SqlServerCe.4.0" description=".NET Framework Data Provider for Microsoft SQL Server Compact" type="System.Data.SqlServerCe.SqlCeProviderFactory, System.Data.SqlServerCe, Version=4.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" />
    </DbProviderFactories>
</system.data>

此外，删除 <DbProviderFactories /> 的所有单终止元素（如果找到的话）。

接下来，您可以使用包管理器控制台添加与 SQL Server CE (sqlce*.dll) 相关的引用，方法是找到 EntityFramework.SqlServerCompact 包（引用 this one）并安装它在你的解决方案上。此外，在需要时将 EF（和 SQL 服务器）连接字符串中的提供程序名称 System.Data.SqlClient 更改为 System.Data.SqlServerCe.4.0。

参考文献：

Unable to find the requested .Net Framework Data Provider

Unable to find the requested .Net Framework Data Provider. It may not be installed.

Unable to find the requested .Net Framework Data Provider. It may not be installed. - when following mvc3 asp.net tutorial

实施 SimpleMembership 时无法找到 .net 数据提供程序异常

Unable to find .net data provider exception when implementing SimpleMembership

c#

asp.net-mvc

simplemembership