How to create a delay for a command in c#?

Question

I want to insert delay for changing color of button for 2000 milisecond in my game App in c# ... what command should I use for it ?? ( I want to changes color of button for 2 sec and then come back to normal state ) thank you

        switch (colorNum)
        {
            case 1:
                btnRed.BackColor = Color.Red

                btnRed.BackColor = Color.LightCoral;
                firedColors[count] = "Red";
                count++;
                break;
            case 2:
                btnBlue.BackColor = Color.Blue;

                btnRed.BackColor = Color.LightBlue;
                firedColors[count] = "Blue";
                count++;
                break;
            case 3:
                btnYellow.BackColor = Color.Gold;

                btnYellow.BackColor = Color.LightYellow;
                firedColors[count] = "Yellow";
                count++;
                break;
        }

Answer 1

Here is one way you can do it with async - await:

using System.Threading.Tasks;

async void YourFunction()   // <--- Use "async" keyword
{
    switch (colorNum)
    {
        case 1:
            btnRed.BackColor = Color.Red;
            await Task.Delay(2000);
            btnRed.BackColor = Color.LightCoral;
            firedColors[count] = "Red";
            count++;
            break;
        case 2:
            btnBlue.BackColor = Color.Blue;
            await Task.Delay(2000);
            btnRed.BackColor = Color.LightBlue;
            firedColors[count] = "Blue";
            count++;
            break;
        case 3:
            btnYellow.BackColor = Color.Gold;
            await Task.Delay(2000);
            btnYellow.BackColor = Color.LightYellow;
            firedColors[count] = "Yellow";
            count++;
            break;
    }
}

Note: this code use .Net version 4.5 and above.