public static void playSystemSpeaker(int repeat, int freq, int msDuration)
{
try
{
for (int i = 0; i < repeat; i++)
{
WinAPIHelper.Beep(freq, msDuration);
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
}
}
public static WindowsImpersonationContext impersonateValidUser(String userName, String domain, String password)
{
WindowsImpersonationContext impersonationContext;
WindowsIdentity tempWindowsIdentity;
IntPtr token = IntPtr.Zero;
IntPtr tokenDuplicate = IntPtr.Zero;
if (WinAPIHelper.RevertToSelf())
{
if (WinAPIHelper.LogonUserA(userName, domain, password, WinAPIHelper.LOGON32_LOGON_INTERACTIVE, WinAPIHelper.LOGON32_PROVIDER_DEFAULT, ref token) != 0)
{
if (WinAPIHelper.DuplicateToken(token, 2, ref tokenDuplicate) != 0)
{
tempWindowsIdentity = new WindowsIdentity(tokenDuplicate);
impersonationContext = tempWindowsIdentity.Impersonate();
if (impersonationContext != null)
{
WinAPIHelper.CloseHandle(token);
WinAPIHelper.CloseHandle(tokenDuplicate);
return(impersonationContext);
}
}
}
}
if (token != IntPtr.Zero)
{
WinAPIHelper.CloseHandle(token);
}
if (tokenDuplicate != IntPtr.Zero)
{
WinAPIHelper.CloseHandle(tokenDuplicate);
}
return(null);
}