Abstractions.WindowsApi.pInvokes.GetCredentials C# (CSharp) Method

        public static NetworkCredential GetCredentials(string caption, string message)
        {
            SafeNativeMethods.CREDUI_INFO uiInfo = new SafeNativeMethods.CREDUI_INFO();
            uiInfo.cbSize = Marshal.SizeOf(uiInfo);
            uiInfo.pszCaptionText = caption;
            uiInfo.pszMessageText = message;

            uint authPackage = 0;
            IntPtr outCredBuffer = new IntPtr();
            uint outCredSize;
            bool save = false;
            int result = SafeNativeMethods.CredUIPromptForWindowsCredentials(ref uiInfo, 0, ref authPackage,
                                                           IntPtr.Zero, 0, out outCredBuffer, out outCredSize, ref save, 0);


            var usernameBuf = new StringBuilder(100);
            var passwordBuf = new StringBuilder(100);
            var domainBuf = new StringBuilder(100);
            int maxUserName = 100;
            int maxDomain = 100;
            int maxPassword = 100;

            if (result == 0)
            {
                if (SafeNativeMethods.CredUnPackAuthenticationBuffer(0, outCredBuffer, outCredSize, usernameBuf, ref maxUserName,
                                                                     domainBuf, ref maxDomain, passwordBuf, ref maxPassword))
                {
                    SafeNativeMethods.CoTaskMemFree(outCredBuffer);
                    return new NetworkCredential()
                    {
                        UserName = usernameBuf.ToString(),
                        Password = passwordBuf.ToString(),
                        Domain = domainBuf.ToString()
                    };
                }
            }

            return null;
        }