Potentially dangerous request.form values were detected from the client (content= <p>&nbsp; &nbsp; &nb ...).

potentially dangerous request.form values were detected from the client (content= <p>&nbsp; &nbsp; &nb ...).

Description: ASP. NET detects potentially dangerous data in the request because it may include HTML tags or scripts. This data may indicate an attempt to compromise application security, such as cross-site scripting attacks. If this type of input applies to your application, you can include code from pages that are explicitly allowed. For more information, see http://go.microsoft.com/fwlink/?LinkID=212874.

Exception Details: System.Web.HttpRequestValidationException: Potentially dangerous detected from client (content= <p>&nbsp; &nbsp; &nb ...) The Request.Form value.

Original: http://www.cnblogs.com/youring2/p/3559781.html

Web. config adds

<system.web>    
　　
Because the validation of 4.0 is enabled before HTTP beginrequest, the requested validation applies to all ASP. NET resources, ASPX pages, ashx pages, Web services, and some HTTP handlers.
Potentially dangerous request.form values were detected from the client (content= <p>&nbsp; &nbsp; &nb ...).