C#

<br />
public float FaceImageQuality(Image faceImage)<br />
        {<br />
            this.retrievedFaceQuality = -10;<br />
            this.faceQualityCheckReturned = false;<br />
            fvws.FaceQualityAsync(ImageToByteArr(faceImage));<br />
            int localCounter = 0;<br />
            while (localCounter < this.maxWaitTime || this.faceQualityCheckReturned)<br />
            {<br />
                localCounter++;<br />
                Thread.Sleep(100);<br />
            }<br />
            if (!this.faceQualityCheckReturned && localCounter >= this.maxWaitTime)<br />
                throw new Exception(String.Format(this.webServiceDidNotResponded, (this.maxWaitTime * 10), "FaceImageQuality"));<br />
            return this.retrievedFaceQuality;<br />
        }<br />
<br />
private void fvws_FaceQualityCompleted(object sender, FaceValidationClass.FaceValidationWebService.FaceQualityCompletedEventArgs e)<br />
        {<br />
            this.retrievedFaceQuality = e.Result;<br />
            this.faceQualityCheckReturned = true;<br />
        }<br />