Sound Effects in SilverLight 5 Via WCF Service

Vijay Prativadi
12y
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Introduction

Today, in this article let's concentrate on another SilverLight application, whereby communicating with a WCF Service to perform some operation.

Question: What is SoundEffect?

In simple terms "SilverLight 5 enables to work with .wav files flexibly and we can set the sound properties such as pitch, volume, pan and so on. This sound effect class provides easy way to work with .wav files without creating much overhead as caused with previous versions of SL (file conversion - using parsers)".

Let's get this implemented practically for a better idea of this!!!

Step 1: The complete code of the IService1.cs looks like this.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;
namespace Wcf_Sound
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IService1" in both code and config file
together.
    [ServiceContract]
    public interface IService1
    {
        [OperationContract]
        double add(double a, double b);
        [OperationContract]
        double sub(double a, double b);
        [OperationContract]
        double mul(double a, double b);
        [OperationContract]
        double div(double a, double b);
    }
}

Step 2: The complete code of the Service1.svc.cs looks like this.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;
namespace Wcf_Sound
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "Service1" in code, svc and config file together.
    public class Service1 : IService1
    {
        public double add(double a, double b)
        {
            return a + b;
        }
        public double sub(double a, double b)
        {
            return a - b;
        }
        public double mul(double a, double b)
        {
            return a * b;
        }
        public double div(double a, double b)
        {
            return a / b;
        }
    }
}

Step 3: The complete code of the Web.Config looks like this.

<?xml version="1.0"?>
<configuration>
<system.web>
    <compilation debug="true" targetFramework="4.0" />
</system.web>
<system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          
          <serviceMetadata httpGetEnabled="true"/>
          
          <serviceDebug includeExceptionDetailInFaults="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
</configuration>

Step 4: The complete code of the Clientaccesspolicy.xml looks like this (to avoid cross domain problem in SilverLight).

<?xml version="1.0" encoding="utf-8"?>
<access-policy>
<cross-domain-access>
    <policy>
      <allow-from http-request-headers="SOAPAction">
        <domain uri="*"/>
      </allow-from>
      <grant-to>
        <resource path="/" include-subpaths="true"/>
      </grant-to>
    </policy>
</cross-domain-access>
</access-policy>

Step 5: The complete code of the MainPage.xaml looks like this.

Step 6: The complete code of the MainPage.xaml.cs looks like this.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Silverlight_Sound_Application.ServiceReference1;
using Microsoft.Xna.Framework.Audio;
namespace Silverlight_Sound_Application
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }
        private void add_Call(object sender, addCompletedEventArgs e)
        {
            txtResult.Text = "Addition Result is: " + e.Result.ToString();
            border1.Visibility = System.Windows.Visibility.Visible;
        }
        private void button1_Click(object sender, RoutedEventArgs e)
        {
            border1.Visibility = System.Windows.Visibility.Collapsed;
            if (string.IsNullOrEmpty(textBox1.Text) || string.IsNullOrEmpty(textBox2.Text))
            {
                MessageBox.Show("Please Enter Some Values", "SilverLight 5 - Window via WCF", MessageBoxButton.OKCancel);
            }
            else
            {
                soundData();
                objClient.addCompleted += new EventHandler<addCompletedEventArgs>(add_Call);
                objClient.addAsync(Convert.ToDouble(textBox1.Text), Convert.ToDouble(textBox2.Text));
                textBox1.Text = "";
                textBox2.Text = "";
            }
        }
        private void sub_Call(object sender, subCompletedEventArgs e)
        {
            txtResult.Text = "Subtraction Result is: " + e.Result.ToString();
            border1.Visibility = System.Windows.Visibility.Visible;
        }
        private void button2_Click(object sender, RoutedEventArgs e)
        {
            border1.Visibility = System.Windows.Visibility.Collapsed;
            if (string.IsNullOrEmpty(textBox1.Text) || string.IsNullOrEmpty(textBox2.Text))
            {
                MessageBox.Show("Please Enter Some Values", "SilverLight 5 - Window via WCF", MessageBoxButton.OKCancel);
            }
            else
            {
                soundData();
                objClient.subCompleted += new EventHandler<subCompletedEventArgs>(sub_Call);
                objClient.subAsync(Convert.ToDouble(textBox1.Text), Convert.ToDouble(textBox2.Text));
                textBox1.Text = "";
                textBox2.Text = "";
            }
        }
        private void mul_Call(object sender, mulCompletedEventArgs e)
        {
            txtResult.Text = "Multiplication Result is: " + e.Result.ToString();
            border1.Visibility = System.Windows.Visibility.Visible;
        }
        private void button3_Click(object sender, RoutedEventArgs e)
        {
            border1.Visibility = System.Windows.Visibility.Collapsed;
            if (string.IsNullOrEmpty(textBox1.Text) || string.IsNullOrEmpty(textBox2.Text))
            {
                MessageBox.Show("Please Enter Some Values", "SilverLight 5 - Window via WCF", MessageBoxButton.OKCancel);
            }
            else
            {
                soundData();
                objClient.mulCompleted += new EventHandler<mulCompletedEventArgs>(mul_Call);
                objClient.mulAsync(Convert.ToDouble(textBox1.Text), Convert.ToDouble(textBox2.Text));
                textBox1.Text = "";
                textBox2.Text = "";

            }
        }
        private void div_Call(object sender, divCompletedEventArgs e)
        {
            txtResult.Text = "Division Result is: " + e.Result.ToString();
            border1.Visibility = System.Windows.Visibility.Visible;
        }
        private void button4_Click(object sender, RoutedEventArgs e)
        {
            border1.Visibility = System.Windows.Visibility.Collapsed;
            if (string.IsNullOrEmpty(textBox1.Text) || string.IsNullOrEmpty(textBox2.Text))
            {
                MessageBox.Show("Please Enter Some Values", "SilverLight 5 - Window via WCF", MessageBoxButton.OKCancel);
            }
            else
            {
                soundData();
               objClient.divCompleted += new EventHandler<divCompletedEventArgs>(div_Call);
                objClient.divAsync(Convert.ToDouble(textBox1.Text), Convert.ToDouble(textBox2.Text));
                textBox1.Text = "";
                textBox2.Text = "";
            }
        }
        SoundEffect _toonSound;
        private void soundData()
        {
            var toonStream = Application.GetResourceStream(new Uri("toon8.wav", UriKind.RelativeOrAbsolute));
            _toonSound = SoundEffect.FromStream(toonStream.Stream);
            SoundEffectInstance objSoundInstance = _toonSound.CreateInstance();
            objSoundInstance.Pitch = 1.0f;
            objSoundInstance.Volume = 1.0f;
            objSoundInstance.Pan = 1.0f;
            objSoundInstance.Play();
        }
        #region Instance Variables
        Service1Client objClient = new Service1Client();
        #endregion
    }
}