C# HttpRequest and different encodings

<configuration>
  <system.web>
    <globalization
      fileEncoding="utf-8"
      requestEncoding="utf-8"
      responseEncoding="utf-8"
      culture="en-US"
      uiCulture="de-DE"
    />
  </system.web>
</configuration>

<configuration>
  <system.web>
    <globalization requestEncoding="iso-8859-1"/>
  </system.web>
</configuration>

Request["varName"]