The multi-threaded program may still run after the request is executed. Therefore, the HttpContext object cannot be directly used in multi-threaded Code. However, we can use it as a parameter and pass it to the multi-threaded code. To implement this function, you can use the following two methods:
1. Pass the HttpContext object as a member of the class. The following is the complete instance code of this method, which can be directly copied and executed:
ASPX code
<% @ Page Language = "C #" %>
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Script runat = "server">
Public class ThreadWork
{
Public System. Web. HttpContext ctx {set; get ;}
Public ThreadWork (){}
Public void DoTest ()
{
If (System. IO. File. Exists (HttpRuntime. AppDomainAppPath + "Log.txt "))
{
System. IO. File. Delete (HttpRuntime. AppDomainAppPath + "Log.txt ");
}
For (int I = 0; I <10; I ++)
{
// Write the content to the file to record the test results.
Using (System. IO. StreamWriter sw = new System. IO. StreamWriter (HttpRuntime. AppDomainAppPath + "Log.txt", true ))
{
Sw. writeLine ("current time:" + DateTime. now. toString ("yyyy-MM-dd HH: mm: ss") + "parameter:" + ctx. request. queryString ["id"]);
Sw. Flush ();
Sw. Close ();
Sw. Dispose ();
}
System. Threading. Thread. Sleep (5000 );
}
}
}
Protected void Page_Load (object sender, EventArgs e)
{
ThreadWork tw = new ThreadWork ();
Tw. ctx = System. Web. HttpContext. Current;
System. Threading. Thread thread = new System. Threading. Thread (new System. Threading. ThreadStart (tw. DoTest ));
Thread. Start ();
}
</Script>
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head runat = "server">
<Title> </title>
</Head>
<Body>
<Form id = "form1" runat = "server"> </form>
</Body>
</Html>
We can use this method for access,
Aspx? Id = mengxianhui "> http: // localhost: 11249/WebSite1/ThreadTest. aspx? Id = mengxianhui
The result is as follows:
Txt code
Current Time: 20:11:07 get the parameter: mengxianhui
Current Time: 20:11:12 get the parameter: mengxianhui
Current Time: 20:11:17 get the parameter: mengxianhui
Current Time: 20:11:22 get the parameter: mengxianhui
Current Time: 20:11:27 get the parameter: mengxianhui
Current Time: 20:11:32 get the parameter: mengxianhui
Current Time: 20:11:37 get the parameter: mengxianhui
Current Time: 20:11:42 get the parameter: mengxianhui
Current Time: 20:11:47 get the parameter: mengxianhui
Current Time: 20:11:52 get the parameter: mengxianhui
2. Use the ParameterizedThreadStart class. The complete source code is as follows:
ASpX code
<% @ Page Language = "C #" %>
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Script runat = "server">
Protected void Page_Load (object sender, EventArgs e)
{
System. Threading. Thread thread = new System. Threading. Thread (new System. Threading. ParameterizedThreadStart (DoTest ));
Thread. IsBackground = true;
Thread. Start (System. Web. HttpContext. Current );
Response. Write ("Page request completed. ");
}
Private static void DoTest (Object context)
{
System. Web. HttpContext ctx = context as System. Web. HttpContext;
If (System. IO. File. Exists (HttpRuntime. AppDomainAppPath + "Log.txt "))
{
System. IO. File. Delete (HttpRuntime. AppDomainAppPath + "Log.txt ");
}
For (int I = 0; I <10; I ++)
{
// Write the content to the file to record the test results.
Using (System. IO. StreamWriter sw = new System. IO. StreamWriter (HttpRuntime. AppDomainAppPath + "Log.txt", true ))
{
Sw. writeLine ("current time:" + DateTime. now. toString ("yyyy-MM-dd HH: mm: ss") + "parameter:" + ctx. request. queryString ["id"]);
Sw. Flush ();
Sw. Close ();
Sw. Dispose ();
}
System. Threading. Thread. Sleep (5000 );
}
}
</Script>
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head runat = "server">
<Title> </title>
</Head>
<Body>
<Form id = "form1" runat = "server"> </form>
</Body>
</Html>
The result is the same as the preceding one.
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
