报表查看器 Web 控件 HTTP 处理程序尚未在应用程序的 web.config 

上传

Microsoft.ReportViewer.Common.dll，Microsoft.ReportViewer.ProcessingObjectModel.dll到bin目录

<compilation debug="true" targetFramework="4.0">
      <assemblies>
        <add assembly="Microsoft.ReportViewer.WebForms, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845DCD8080CC91"/>
        <add assembly="Microsoft.ReportViewer.Common, Version=12.0.0.0, Culture=neutral, PublicKeyToken=89845DCD8080CC91"/>
        <add assembly="Microsoft.Build.Framework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
      </assemblies>
    </compilation>