AzureIoTSuiteUWPDevice.MainPage.checkConfig C# (CSharp) Method

        private bool checkConfig()
        {
            return ((this.TBDeviceID.Text != null) && (this.TBHostName.Text != null) && (this.TBDeviceKey != null) &&
                    (this.TBDeviceID.Text != "") && (this.TBHostName.Text != "") && (this.TBDeviceKey.Text != ""));
        }