C ＃ cross thread refresh foreground UI

         stay WinForm When programming in , If we calculate directly in the main process, we will get stuck UI Threads , In this case, the user experience will be very poor , However, if you operate directly in the background, you can't give users a direct feedback . How to achieve asynchronous computing + The front desk is refreshed , There are several methods for your reference .

One 、 Directly shield the inspection between threads

        This is the most lazy way , because C# Will check the calling process between different threads , By default, this operation may cause unsafe phenomena , So it is forbidden , We can go to init Add a line of code to the function to remove the restriction .

Control.CheckForIllegalCrossThreadCalls = false;// Cancel the security check between threads 

Two 、 Use timer

        The timer can allow specific code for a certain time , It's like polling , We can do background operation by placing code in the timer + Front desk update .

        But it should be noted that if the timer touches Send too often Or it may cause the front desk to jam and even cannot move （ Trigger time is too short / Too many timers ）

Timer tm = new Timer(); // Initialize the timer 

tm.Interval = 10;        // Timer interval 
tm.Tick += Tm_Tick;      // Set the timer to trigger the event 
tm.Start();              // Start timer 

private void Tm_Tick(object sender, EventArgs e)
{
    // Code to execute 
    tm.Stop();    // Terminate timer 
}

3、 ... and 、 Use asynchronous

        This method is the most convenient and safe method , It is highly recommended

            new Task(new Action(() =>
            {

                this.Invoke(new Action(() =>
                {
                    // Code to execute 
                }));

            })).Start();