面对在asp.net mvc中创建动态文件上传控件的问题？

Question

我是动态控制文件上传，因此用户可以上传多个文件。但是当我添加超过5个文件上传控件并提交表单时。发生错误并显示

The connection was reset
The connection to the server was reset while the page was loading.

可能是什么问题？