ASP.net C＃从另一个线程返回JS警报

Question

I have the following case:

in Default.aspx.cs

void Button1_Click(Object Sender, EventArgs e)
{
  new Thread(() =>LongProcessFunction()).Start(); 
  // I am running this function in a new thread so the end user does not wait till the end of the process
}

public void LongProcessFunction()
{
  //some code with long process
  // When done alert the user no matter what he's doing on the website.
  System.Web.UI.ScriptManager.RegisterStartupScript(this, GetType(), "Alert","alert('Function is Complete')" , true);    
}

The problem is that I need this alert script to show for end user. I am assuming that it's running on the other thread and not showing.

Answer 1

You should be able to set a session or application variable at the end of your long running function, which indicates that the process has finished. You could then check if this variable has been set on each page load (ideally in a base class which inherits from Page) and, if it has been set, unset it and call your RegisterStartupScript code.