asp.net中兼容多个版本dll的方式

  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1" >
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed"/>
        <bindingRedirect oldVersion="0.0.0.0-7.0.0.0" newVersion="7.0.0.0"/>
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>