隐藏的输入字段会导致潜在危险的Request.Form值错误

In my ASP.NET 1.1 application, I am compressing and replacing the hidden Viewstate variable with an alternate compressed value, stored in a hidden field called __VSTATE. This works well but on a few occasions, submitting a page causes the common "potentially dangerous Request.Form value ..." error.In my ASP.NET 1.1 application, I am compressing