[C#]Simple windows registry manipulation

using Microsoft.Win32;

//Attempt to open the key.
RegistryKey key = Registry.CurrentUser.OpenSubKey(@"Software\Play\WindowPosition");

//The key doesn't exist if it returns null.
if (key == null)
{
    //Create & open it.
    key = Registry.CurrentUser.CreateSubKey(@"Software\Play\WindowPos");
    key.SetValue("PositionX", Location.X);
    key.SetValue("PositionY", Location.Y);
}
else
{
    //Get value
    Location.X = key.GetValue("PositionX");
    Location.Y = key.GetValue("PositionY");
}