Silverlight and linq

[erum]

i need to show mesage box that show "RECORED ALreay exist ind datatabse "
uisng linq and silverlight

have single on code

.xaml fiel code is here

private void createSurvey_Click(object sender, RoutedEventArgs e)
        {
            Service3Client client = new Service3Client();
            //Int32 i;
           client.CheckSurveyExistAsync(this.Title.Text, this.SurveyQuestion.Text, this.Surveyoption1.Text, this.Surveyoption2.Text, this.Surveyoption3.Text);


            
        }

and service3.cs code is here

public void CheckSurveyExist(string Title, string question, string option1, string option2, string option3)
        {

            DataClasses2DataContext db2 = new DataClasses2DataContext();



            int highScoreCount =
                (from c in db2.Surveys
                 where c.SurveyTitle == Title
                 select c).Count();

            if (highScoreCount > 0)
            {
                return ;

            }
            else
            {
                InsertSurveyData(Title, question, option1, option2, option3);
                //return 0;
            }


        }