Wait one second in running program

Question

dataGridView1 Rows x1  Cells y1  Style BackColor   System Drawing Color Red  System Threading Thread Sleep 1000     I want to wait one second before printing my grid cells with this code  but it isn t working  What can i do

User · Answer

Maybe try this code   void wait  double x        DateTime t   DateTime Now      DateTime tf   DateTime Now AddSeconds x        while  t  lt  tf            t   DateTime Now

User · Answer

I feel like all that was wrong here was the order  Sel  uklu wanted the app to wait for a second before filling in the grid  so the Sleep command should have come before the fill command       System Threading Thread Sleep 1000       dataGridView1 Rows x1  Cells y1  Style BackColor   System Drawing Color Red

User · Answer

Try this function  public void Wait int time                    Thread thread   new Thread delegate                    System Threading Thread Sleep time               thread Start        while  thread IsAlive      Application DoEvents        Call function  Wait 1000      Wait for 1000ms   1s

User · Answer

Net Core seems to be missing the DispatcherTimer   If we are OK with using an async method  Task Delay will meet our needs  This can also be useful if you want to wait inside of a for loop for rate-limiting reasons   public async Task DoTasks List lt Items gt  items        foreach  var item in items                await Task Delay 2   1000           DoWork item             You can await the completion of this method as follows   public async void TaskCaller List lt Item gt  items        await DoTasks items

User · Answer

Personally I think Thread Sleep is a poor implementation  It locks the UI etc  I personally like timer implementations since it waits then fires    Usage      DelayFactory DelayAction 500  new Action      gt    this RunAction            Note Forms Timer and Timer   have similar implementations    public static void DelayAction int millisecond  Action action        var timer   new DispatcherTimer        timer Tick    delegate                action Invoke            timer Stop                timer Interval   TimeSpan FromMilliseconds millisecond       timer Start

User · Answer

Busy waiting won t be a severe drawback if it is short  In my case there was the need to give visual feedback to the user by flashing a control  it is a chart control that can be copied to clipboard  which changes its background for some milliseconds   It works fine this way   using System Threading      Clipboard SetImage bm        some code distribution chart BackColor   Color Gray  Application DoEvents         ensure repaint  may be not needed Thread Sleep 50   distribution chart BackColor   Color OldLace

User · Answer

Is it pausing  but you don t see your red color appear in the cell   Try this   dataGridView1 Rows x1  Cells y1  Style BackColor   System Drawing Color Red  dataGridView1 Refresh    System Threading Thread Sleep 1000

User · Answer

use dataGridView1 Refresh

User · Answer

The Best way to wait without freezing your main thread is using the Task Delay function  So your code will look like this var t   Task Run async delegate                     dataGridView1 Rows x1  Cells y1  Style BackColor   System Drawing Color Red      dataGridView1 Refresh        await Task Delay 1000

User · Answer

Wait function using timers  no UI locks  public void wait int milliseconds        var timer1   new System Windows Forms Timer        if  milliseconds    0    milliseconds  lt  0  return          Console WriteLine  quot start wait timer quot        timer1 Interval   milliseconds      timer1 Enabled    true      timer1 Start         timer1 Tick     s  e    gt                timer1 Enabled   false          timer1 Stop               Console WriteLine  quot stop wait timer quot                while  timer1 Enabled                Application DoEvents             Usage  just placing this inside your code that needs to wait  wait 1000     wait one second

[c#] Wait one second in running program

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