Question

网站后台更新新闻文章点保存出现错误怎么解决，ASP.net4.0

Server Error in '/' Application.A potentially dangerous Request.Form value was detected from the client (txtBody="<p>我们的生活被所有的工作所代替，已经...").
Description: Request Validation has detected a potentially dangerous client input value, and processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. To allow pages to override application request validation settings, set the requestValidationMode attribute in the httpRuntime configuration section to requestValidationMode="2.0". Example: <httpRuntime requestValidationMode="2.0" />. After setting this value, you can then disable request validation by setting validateRequest="false" in the Page directive or in the <pages> configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case. For more information, see http://go.microsoft.com/fwlink/?LinkId=153133.

Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client (txtBody="<p>我们的生活被所有的工作所代替，已经...").

Source Error:

Source File: c:\windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\1736e117\1bf547da\App_Web_vl1wvkr1.12.cs Line: 0

Answer 1

这是因为ASP.NET 检测到了潜在的包含HTML标签的字段了，这在ASP.NET中是不允许的，建议你把 HTML中的 < > 空格 。。。 转换成 < &rt 的形式，再提交。

Answer 2

你提交的数据存在特殊编码，ASP.NET检测出于安全考虑，提示错误提醒。

你可以这样解决问题：在Page标签中添加ValidateRequest="false"

<%@ Page ValidateRequest="false" %>

Answer 3

aspx页面顶部加一句。 ValidateRequest="false"
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="SNews_Info.aspx.cs" Inherits="CMS_SNews_Info"
ValidateRequest="false" %>