使用asp.net完成一些后台进程后如何重定向同一页面？
我正在创建一个应用程序，它在一个网格中一一显示学生详细信息。当用户单击 btnDetails 时，我需要启动一个线程，在几秒钟后显示下一个学生详细信息（这不是硬编码），我需要实时生成详细信息，因此需要时间，即 2-3 分钟，所以我想等待。
我已经完成了这段代码，但出现异常“响应在此上下文中不可用”，那么如何解决这个问题。
protected void btnNext_Click(object sender, ImageClickEventArgs e)
{
Response.Status = "301 Moved Permanently";
Response.AddHeader("Location", "http://localhost:2653/WebSite1/Default.aspx");
}
public void NextStudent()
{
try
{
int iCont = 0;
while (true)
{
Thread.Sleep(3000);
iCont++;
if (iCont > 5)
{
btnNext_Click(this, null);
break;
}
}
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
protected void btnDetails_Click(object sender, EventArgs e)
{
Thread threadNextQuestion = new Thread(new ThreadStart(NextStudent));
threadNextQuestion.SetApartmentState(ApartmentState.STA);
threadNextQuestion.Start();
}
当我手动单击 btnNext 时，它工作正常，但调用 NextStudent() 方法时出现错误。
所以请建议我如何处理这个问题。
谢谢， 拉克斯米拉尔·梅纳里亚
I am creating a application which display student details in one grid one by one. When user click on btnDetails then I need to start a thread which display next student details after few seconds (this is not hardcoded) I need to generate details realtime so it will take time i.e. 2-3 minutes, So I would like to wait.
I have done this code but getting exception "Response is not available in this context" so how to solve that.
protected void btnNext_Click(object sender, ImageClickEventArgs e)
{
Response.Status = "301 Moved Permanently";
Response.AddHeader("Location", "http://localhost:2653/WebSite1/Default.aspx");
}
public void NextStudent()
{
try
{
int iCont = 0;
while (true)
{
Thread.Sleep(3000);
iCont++;
if (iCont > 5)
{
btnNext_Click(this, null);
break;
}
}
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
protected void btnDetails_Click(object sender, EventArgs e)
{
Thread threadNextQuestion = new Thread(new ThreadStart(NextStudent));
threadNextQuestion.SetApartmentState(ApartmentState.STA);
threadNextQuestion.Start();
}
When I manually click on btnNext then its working fine, but calling in NextStudent() method got error.
So please suggest me how can I handle this issue.
Thanks,
Laxmilal Menaria
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只有您的主线程可以访问 Response 对象。因此，您要么需要同步调用 NextStudent，要么在线程中注册回调委托。
Only your main thread can access the Response object. So you either need to call NextStudent synchronously or register a callback delegate at your thread.
试试这个：
Try this :