潜在危险的请求.从客户端检测到表单值(

本文关键字：检测 表单 客户端 危险 请求 | 更新日期: 2024-10-22 00:19:02

可能重复：
潜在危险的请求。从客户端检测到表单值

我收到错误消息：

 A potentially dangerous Request.Form value was detected from the client 
 (ctl00$MainContent$textboxError=...


在我运行asp.net（C#）web应用程序之后。我该怎么修？

这是我的密码。

using System;
using System.Data;
using System.Configuration;
using System.Web; 
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Net;
using System.Text.RegularExpressions;
namespace SMS
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
    textboxRecipient.Width = 400;
    textboxMessage.Width = 450;
    textboxMessage.Rows = 10;
    textboxError.Width = 400;
    textboxError.Rows = 5;
    textboxError.ForeColor = System.Drawing.Color.Red;
    textboxError.Visible = false;
    textboxError.Text = "";
    if (!Page.IsPostBack)
    {
        textboxRecipient.Text = "+85593840396";
        textboxMessage.Text = "Hello World!";
    }
}
protected void buttonSendOnClick(object sender, EventArgs e)
{
    if (textboxRecipient.Text == "")
    {
        textboxError.Text += "Recipient(s) field must not be empty!'n";
        textboxError.Visible = true;
        return;
    }

    string ozSURL = "http://127.0.0.1"; //where Ozeki NG SMS Gateway is running
    string ozSPort = "9501"; //port number where Ozeki NG SMS Gateway is listening
    string ozUser = HttpUtility.UrlEncode("tenh"); //username for successful login
    string ozPassw = HttpUtility.UrlEncode("tenh123"); //user's password
    string ozMessageType = "SMS:TEXT"; //type of message
    string ozRecipients = HttpUtility.UrlEncode(textboxRecipient.Text); 
    string ozMessageData = HttpUtility.UrlEncode(textboxMessage.Text); 
    string createdURL = ozSURL + ":" + ozSPort + "/httpapi" +
        "?action=sendMessage" +
        "&username=" + ozUser +
        "&password=" + ozPassw +
        "&messageType=" + ozMessageType +
        "&recipient=" + ozRecipients +
        "&messageData=" + ozMessageData;
    try
    {
        HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(createdURL);

        HttpWebResponse myResp = (HttpWebResponse)myReq.GetResponse();
        System.IO.StreamReader respStreamReader=new 
      System.IO.StreamReader(myResp.GetResponseStream());
        string responseString = respStreamReader.ReadToEnd();
        respStreamReader.Close();
        myResp.Close();
        //inform the user
        textboxError.Text = responseString;
        textboxError.Visible = true;
    }
    catch (Exception)
    {
        textboxError.Text = "Ozeki NG SMS Gateway Server is not running!";
        textboxError.Visible = true;
    }
  }
  }
  }

我已经在web.config中添加了以下代码：

   validateRequest="false" and requestValidationMode="2.0"

潜在危险的请求.从客户端检测到表单值(

不知道validateRequest="false"不工作的原因错误原因：因为您从包含Html标记的网页中获取数据，而textbox文本属性不允许为其分配Html字符串，所以您必须使用一种将Html标记转换为等效代码的方法。使用HTML。将responseString分配给textboxError.Text时的编码方法。此方法将潜在的不安全字符转换为HTML编码的等效字符。

textboxError.Text = Server.HTMLEncode(responseString);
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