C# Wait until condition is true

Question

I am trying to write a code that executes when a condition is met. Currently, I am using while...loop, which I know is not very efficient. I am also looking at AutoResetEven

Answer 1

You can use an async result and a delegate for this. If you read up on the documentation it should make it pretty clear what to do. I can write up some sample code if you like and attach it to this answer.

Action isExcelInteractive = IsExcelInteractive;

private async void btnOk_Click(object sender, EventArgs e)
{
    IAsyncResult result = isExcelInteractive.BeginInvoke(ItIsDone, null);
    result.AsyncWaitHandle.WaitOne();
    Console.WriteLine("YAY");
} 

static void IsExcelInteractive(){
   while (something_is_false) // do your check here
   {
       if(something_is_true)
          return true;
   }
   Thread.Sleep(1);
}

void ItIsDone(IAsyncResult result)
{
   this.isExcelInteractive.EndInvoke(result);
}

Apologies if this code isn't 100% complete, I don't have Visual Studio on this computer, but hopefully it gets you where you need to get to.