/// <summary>
/// Changes the system's power plan to the one specified by powerPlans[index].
/// </summary>
/// <param name="index"></param>
internal void SetPowerPlan(int index)
{
ActivePlan = PowerPlans[index];
var process = new Process {
StartInfo = _startInfo
};
process.Start();
process.StandardInput.WriteLine("powercfg /SETACTIVE " + ActivePlan.Guid);
process.StandardInput.WriteLine("exit");
process.StandardOutput.ReadToEnd();
process.Dispose();
}
/// <summary>
/// Retrieves a list of available power plans and determines the currently active one.
/// </summary>
internal void LoadPowerPlans()
{
// use the powercfg cmd tool to determine existing powerplans and the currently active one.
var process = new Process {
StartInfo = _startInfo
};
process.Start();
process.StandardInput.WriteLine("powercfg /L");
process.StandardInput.WriteLine("exit");
var utf8Reader = new StreamReader(process.StandardOutput.BaseStream, Encoding.GetEncoding(437));
Console.WriteLine(utf8Reader.CurrentEncoding);
var output = utf8Reader.ReadToEnd();
Console.WriteLine(output);
utf8Reader.Close();
process.Dispose();
// parse the output from powercfg
PowerPlans.Clear();
foreach (var line in output.Split('\n'))
{
if ((line.Trim().Length == 0) || !line.Contains("GUID"))
{
continue;
}
var guid = line.Substring(line.IndexOf(':') + 2).Remove(36);
var name = line.Substring(line.IndexOf('(')).Replace('*', ' ').Trim();
var powerPlan = new PowerPlan(guid, name.Replace('(', ' ').Replace(')', ' ').Trim());
PowerPlans.Add(powerPlan);
if (line.Contains("*"))
{
ActivePlan = powerPlan;
}
}
}