/// <summary>
/// Begins a new task in it's own thread. The target should be a static function
/// that takes a single argument of type Object (which is a Guid object that
/// identifies the AjaxTask object).
/// </summary>
/// <param name="target">The function to execute in a new thread.</param>
/// <returns>The Guid that identifies the task being executed.</returns>
/// <example>
/// static void Worker(Object guid)
/// {
/// // Do work
/// }
///
/// AjaxTask.BeginTask(MyClass.Worker);
/// </example>
static public Guid BeginTask(WaitCallback target)
{
AjaxTask task;
task = new AjaxTask();
task.Save();
ThreadPool.QueueUserWorkItem(target, task.GUID);
return(task.GUID);
}
/// <summary>
/// Process the request for information about the AJAX task
/// specified by the GUID.
/// </summary>
/// <param name="context">Context identifying the current web request.</param>
public void ProcessRequest(HttpContext context)
{
AjaxTask task;
task = new AjaxTask(new Guid(context.Request.QueryString["guid"].ToString()));
context.Response.ContentType = "text/plain";
context.Response.Write(
"{ \"status\": \"" + task.Status.ToString() + "\"" +
", \"progress\": \"" + task.Progress.ToString() + "\"" +
", \"message\": \"" + task.Message.Replace("\"", "\\\"") + "\" }");
}
