asp.net 大文件上传配置

 <system.web>

  <httpRuntime requestValidationMode="2.0" maxRequestLength="3072" ></httpRuntime>

  <!--单位：KB 3072=3MB   默认是4MB,最大支持2GB-->

 </system.web>

<system.webServer>

 <security>
      <requestFiltering>
        <requestLimits maxAllowedContentLength="2147483648" />
        <!--单位：字节B  2147483648=2 GB 默认是4MB,最大支持2GB-->
      </requestFiltering>
    </security>

</system.webServer>