问将图标分配给与指定的软件图标不同的文件类型

EN

var path = System.Reflection.Assembly.GetEntryAssembly().Location;
var icopath = "c:/whatever/icon.ico";
var softwareId = "MySoftware";
var ext = ".myfiletype";


bool isElevated = false;
using (WindowsIdentity identity = WindowsIdentity.GetCurrent())
{
    WindowsPrincipal principal = new WindowsPrincipal(identity);
    isElevated = principal.IsInRole(WindowsBuiltInRole.Administrator);
}

if (isElevated)
{
    Registry.SetValue(@"HKEY_CLASSES_ROOT\" + ext, "", softwareId + ext);
    Registry.SetValue(@"HKEY_CLASSES_ROOT\" + softwareId + ext + @"\DefaultIcon", "", icopath);
    Registry.SetValue(@"HKEY_CLASSES_ROOT\" + softwareId + ext + @"\shell\open\command", null, path + " \"%1\"");

    // refresh
    SHChangeNotify(0x8000000, 0x1000, IntPtr.Zero, IntPtr.Zero);
}