Response.Redirect給出HttpException異常

Question

我正在創建Web應用程序，我得到的問題重定向到另一個頁面，如果我在另一個方法中使用重定向代碼，那麼它工作正常，但我想從我的運行線程中使用重定向代碼和它是扔我HttpExeption.Please你可以看看這段代碼，並顯示正確的方式來使用我的runloop（）方法中的重定向代碼。提前感謝。

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Web.Services; 
using System.Net.Sockets; 
using System.IO; 
using System.Threading; 
using System.Net; 
using System.Text; 
using System.Web.Script.Serialization; 
using System.Threading.Tasks; 

public partial class _Default : System.Web.UI.Page 
{ 
static TcpListener listener; 
static TcpClient client; 
public StreamReader STR; 
public StreamWriter STW; 
public String receive = "kkkk"; 
public String text_to_send; 
string Jsn; 
string URI ; 
string myParameters; 
string URL1; 

Thread backgroundThread2; 
Thread backgroundThread; 
int i, n = 0, k = 0, len = 0, len2 = 0; 
public int readflag = 0, writeflag = 0, pre1 = 0, pre2 = 0, pre3 = 0, nopre = 0; 
char[] ch = new char[100]; 
char[] ch1 = new char[100]; 
char[] ch2 = new char[100]; 
String test = null, s1, s2, s3; 
String test1 = null; 
string frame; 
const int LIMIT = 5; //5 concurrent clients 
protected void Page_Load(object sender, EventArgs e) 
{ 
    frame = Request.QueryString["frame"]; 
    if (Request.QueryString["Frame"] != null) 
     Response.Write("From Page1 param1 value=" + Request.QueryString["frame"]); 

} 
public void Button1_Click(object sender, EventArgs e) //start server 
{ 
    listener = new TcpListener(IPAddress.Any, 8002); 
    listener.Start(); 

    client = listener.AcceptTcpClient(); 
    STR = new StreamReader(client.GetStream()); 
    STW = new StreamWriter(client.GetStream()); 
    STW.AutoFlush = true; 


    backgroundThread = new Thread(new ThreadStart(RunLoop)); 
    backgroundThread.Start(); 
    // Task.Delay(50000); 
    //redirect1(); 

    // Response.Redirect(URL1); 

} 

public void Button2_Click(object sender, EventArgs e) //Redirect server 
{ 
    Jsn = "25"; 
    string URI = "Otherpage.aspx?"; 
    string myParameters = "jasonop="+ Jsn; 
    string URL1 = URI + myParameters; 

     Response.Redirect(URL1); 

    // Response.Redirect("Otherpage.aspx?jasonop=25"); 
// System.Diagnostics.Process.Start("http://localhost:85/shaktijason/1.php?jasonop=25"); 
} 
public class Person 
{ 
    public string Name { get; set; } 
} 
public void RunLoop()  //receive 
{ 
    NetworkStream stream = client.GetStream(); 
    Byte[] bytes = new Byte[256]; 
    String data = null; 
    int i,k=1; 
    string str = ""; 
    JavaScriptSerializer js = new JavaScriptSerializer(); 
    // Loop to receive all the data sent by the client. 
    while ((i = stream.Read(bytes, 0, bytes.Length)) != 0) 
    { 
     // Translate data bytes to a ASCII string. 
     data = System.Text.Encoding.ASCII.GetString(bytes, 0, i); 
     byte[] bHex = Encoding.ASCII.GetBytes(data); 
     // TextBox1.Text = data; 
     string json = "[{Name:'01030008000105C8'}]"; 


     Person[] persons = js.Deserialize<Person[]>(json); 
     string name = persons[0].Name.ToString(); 
     // STW.WriteLine("01030008000105C8") 
     STW.WriteLine(name); 
     string result = decodedata(data); 
     str = result; 
     k++; 
     if (k == 4) { break; } 

    } 
    // string returnJson = "[{Freq:'" + str + "'}]"; 
    Jsn = GetDeviceJSON(str); 
    URI = "Otherpage.aspx?"; 
    myParameters = "jasonop="+Jsn; 
    URL1 = URI + myParameters; 

    Response.Redirect(URL1,false); 
    // Response.Redirect("Otherpage.aspx"); 
    //string URI = "http://localhost:85/Shaktijason/1.php"; 
    //string myParameters = "jasonop=jsn"; 
    //using (WebClient wc = new WebClient()) 
    //{ 
    // wc.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded"; 
    // string HtmlResult = wc.UploadString(URI, myParameters); 
    // Response.Redirect(HtmlResult); 
    //} 
    //string JSON = Json; 


    //backgroundThread2.Start(); 
    // backgroundThread.Abort(); 
    //return js.Serialize(returnJson); 

} 
public string decodedata(string data) 
{ 
    ch1 = data.ToCharArray(); 
    ch2 = data.ToCharArray(); 
    int len1 = data.Count(char.IsLetter); 
    len2 = data.Count(char.IsNumber); 
    int add = len1 + len2; 
    while (ch1[k] != 'k') 
    { 
     ch2[k] = ch1[k]; 
     k++; 
    } 
    string strng = new string(ch2, 0, k); 
    len = strng.Length; 

    string sub = data.Substring(k + 1); 
    len2 = sub.Length; 
    k = 0; 
    if (len == 1) 
    { 
     strng = "0" + strng.PadLeft(len, '0'); 
    } 
    if (len2 == 1) 
    { 
     sub = "0" + sub.PadLeft(len2, '0'); 
    } 
    char[] go = new char[20]; 
    string final = strng + sub; 
    if (final.Equals("00b8")) 
    { 
     final = "0"; 
    } 
    Decimal intAgain = long.Parse(final, System.Globalization.NumberStyles.HexNumber); 


    intAgain = intAgain/100; 
    string final3 = intAgain.ToString(); 

    // string final2 = new string(go); 

    return final3; 
} 
[WebMethod] 
public static string GetValues(string values) 
{ 
    return values; 
} 
public string GetDeviceJSON(String str) 
{ 
    Device[] emps = new Device[] { 
    new Device() 
    { 
     Freq=str 
    } 
    //new employee() 
    //{ 
    // id=102, 
    // name="dinesh", 
    // salary=100000 
    //} 
    }; 
    return new JavaScriptSerializer().Serialize(emps); 
    } 

}

Answer 1

您正在嘗試從後臺線程，其中響應已經長了訪問Reponse對象。

在頁面停止渲染後，您不允許訪問Response對象或HttpContext下的任何其他對象。使用網絡套接字或AJAX調用來創建異步請求和響應。