Question

我的web.config：

  <system.data>
    <DbProviderFactories>
      <remove invariant="Devart.Data.PostgreSql" /> 
      <add name="Npgsql Data Provider" invariant="Devart.Data.PostgreSql" description="Data  Provider for PostgreSQL" type="Npgsql.NpgsqlFactory, Npgsql" />
    </DbProviderFactories>
  </system.data>

    <connectionStrings>
    <add name="OcrCliaCargoEntities" connectionString="metadata=res://*/OcrClia.Cargo.OcrCliaCargoDB.csdl|res://*/OcrClia.Cargo.OcrCliaCargoDB.ssdl|res://*/OcrClia.Cargo.OcrCliaCargoDB.msl;provider=Devart.Data.PostgreSql;provider connection string=user id=postgres;host=10.40.51.202;database=cargo;initial schema=tobackup" providerName="System.Data.EntityClient" />
  </connectionStrings>


    <entityFramework>
    <providers>      
      <provider invariantName="Devart.Data.PostgreSql" type="Npgsql.NpgsqlServices, Npgsql.EntityFramework" />
    </providers>    
  </entityFramework>

查询时发生以下错误：不支持关键字：＆＃39; host＆＃39;

参考文献：

<package id="EntityFramework" version="6.1.0" targetFramework="net40" />
<package id="Npgsql" version="2.1.3" targetFramework="net40" />
<package id="Npgsql.EntityFramework" version="2.1.3" targetFramework="net40" />

我的工作机器上安装了试用版：dcpostgresql.exe

有人遇到过这个问题吗？

Answer 1

According to connectionstrings.com，使用npgsql的主机的正确连接参数是Server而不是Host。这模仿了SQL Server的连接字符串格式，它也使用Server。

所以你的连接字符串应该是：

<add name="OcrCliaCargoEntities" connectionString="metadata=res://*/OcrClia.Cargo.OcrCliaCargoDB.csdl|res://*/OcrClia.Cargo.OcrCliaCargoDB.ssdl|res://*/OcrClia.Cargo.OcrCliaCargoDB.msl;provider=Devart.Data.PostgreSql;provider connection string=user id=postgres;Server=10.40.51.202;database=cargo;initial schema=tobackup" providerName="System.Data.EntityClient" />
/// -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------^^^^^^

ConnectionString PostgreSql EF6上的底层提供程序失败

1 个答案: