How to kill process ?

try
{
for (int i = 0; i < Files.Length; i++)
{
str1[i] = Files[i].Name;

// Create new stopwatch.
Stopwatch stopwatch = new Stopwatch();

// Begin timing.
stopwatch.Start();

// Start Google Earth
Process process = Process.Start(txtfolderpath.Text + "\\" + str1[i]);

int timese = Convert.ToInt16(Convert.ToInt16(txttime.Text) * 1000);

// Wait process
Thread.Sleep(timese);

// Stop timing.
stopwatch.Stop();

// Stop Google Earth
process.Kill();

}
	
}
catch(Exception ex)
{
          process.Kill();
         MessageBox.Show(ex.Message); // Here you can find why it is not getting killed
}