C#

for (int i = 0; i < 10; i++)
{
  Console.WriteLine(System.DateTime.Now.Ticks);
  Thread.Sleep(1000);
}
Console.ReadKey();

matthew_net wrote:

is the unit of tick is 50? I guess by the result. thanks

HarveySaayman wrote:

1. Will this give me an accurate frames per second reading?

HarveySaayman wrote:

2. the reading i get is +/- 100(which makes sence cuz 1000 / 10 = 100), but when the animation timer is set to 1ms the fps value is +/- 500. Is this because the image cant be drawn/calculated that fast and the image wont repaint again until previous panel.Invalidate() has not been completed?

HarveySaayman wrote:

3. quite a bit happens in calculateAndUpdateDrawingVariables(); and it runs 100times per second(animationTimer = 10ms). Any tips on what to avoid in a method like this that runs so many times to use less CPU power?

leppie wrote:

Your monitor is not gonna show you more than 60 times a second

leppie wrote:

Can you cache the result of the function given the same variables

HarveySaayman wrote:

now the reason the animation timer is 10ms is because thats a nice speed for the pie to move at.

no i have no idea how this will perform on a much slower pc like a users...

Greeeg wrote:

Use a fixed animation callback

Greeeg wrote:

don't rely on the fact that it will have the same speed on all computers

HarveySaayman wrote:

1. Will this give me an accurate frames per second reading?

private void clockPanel_Paint(object sender, PaintEventArgs e)
{
   fpsCounter++;

   if ((DateTime.Now - lastFrame).TotalMilliseconds >= 1000) // 1 second elapsed
   {
      fpsString = fpsCounter.ToString();
      lastFrame = DateTime.Now;
      framecounter = 0;
   }
}

HarveySaayman wrote:

3. quite a bit happens in calculateAndUpdateDrawingVariables(); and it runs 100times per second(animationTimer = 10ms). Any tips on what to avoid in a method like this that runs so many times to use less CPU power?

Greeeg wrote:

do you really need so many updates?

Greeeg wrote:

If you do complex math operations

RegistryKey theKey = Registry.LocalMachine.OpenSubKey  
@("Software\\Microsoft\\Windows\\CurrentVersion\\Run");
string[] theValueNamesOfKey = theKey.GetValueNames();

public int getStartupProcessCount()
        {
            RegistryKey theKeyHKLM = Registry.LocalMachine.OpenSubKey(@"Software\\Microsoft\\Windows\\CurrentVersion\\Run");
            string[] theValueNamesOfKeyHKLM = theKeyHKLM.GetValueNames();
            RegistryKey theKeyHKCU = Registry.CurrentUser.OpenSubKey(@"Software\\Microsoft\\Windows\\CurrentVersion\\Run");
            string[] theValueNamesOfKeyHKCU = theKeyHKCU.GetValueNames();
            string val;
            string dName; 
            int indexVal;
            int countStartupProcessess;
            string[] allVal = new string[theValueNamesOfKeyHKCU.Length + theValueNamesOfKeyHKLM.Length];
            theValueNamesOfKeyHKLM.CopyTo(allVal, 0);
            theValueNamesOfKeyHKCU.CopyTo(allVal, theValueNamesOfKeyHKLM.Length);
            countStartupProcessess = allVal.Length;

            string[] directories = Directory.GetDirectories("C:\\Documents and Settings");
            foreach (string d in directories) 
	        {
                foreach(string d1 in Directory.GetDirectories(d))
                {
                    indexVal = d1.LastIndexOf("\\");
                    dName = d1.Substring(indexVal+1, d1.Length - (indexVal+1));
                    if (dName.ToUpper() == "START MENU")
                    {
                        foreach (string d2 in Directory.GetDirectories(d1))
                        {
                            foreach (string d3 in Directory.GetDirectories(d2))
                            {
                                indexVal = d3.LastIndexOf("\\");
                                dName = d3.Substring(indexVal + 1, d3.Length - (indexVal + 1));
                                if (dName.ToUpper().Trim() == "STARTUP")
                                {
                                    foreach (string f in Directory.GetFiles(d3))
                                    {
                                        indexVal = f.LastIndexOf(".");
                                        dName = f.Substring(indexVal + 1, f.Length - (indexVal + 1));
                                        if (dName.ToUpper() == "LNK" && dName.ToUpper() != "INI")
                                            countStartupProcessess++;
                                    }
                                }
                            }
                        }
                    }
                }
	        }

            return countStartupProcessess;

        }