A potentially dangerous Request.Form value was detected from the client
问题描述: ASP.NET has detected data in the request that is potentially dangerous because it might include HTML markup or script. The data might represent an attempt to compromise the security of your application, such as a cross-site scripting attack. If this type of input is appropriate in your application, you can include code in a web page to explicitly allow it. For more information, see http://go.microsoft.com/fwlink/?LinkID=212874.
1 在 web.config中加
<system.web>
...
<httpRuntime ... requestValidationMode="2.0"/>
...
</system.web>2 在 controller的 action上添加属性：
[ValidateInput(false)]