Code shortening suggestions

The code I am posting works 100% as intended and is written using a WPF Application. The reason for this post is to see if maybe someone could give me some pointers on shortening the code. I feel that the amount of if statements I am using is a bit too extravagant.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Speech.AudioFormat;
using System.Speech.Synthesis;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace SpeechTutorial
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        SpeechSynthesizer synth = new SpeechSynthesizer();

        public MainWindow()
        {
            InitializeComponent();
            comboItems();
        }

        private void comboItems()
        {
                foreach (InstalledVoice voice in synth.GetInstalledVoices())
                {
                    // loop through each voice installed on machine
                    VoiceInfo info = voice.VoiceInfo;
                    // adds each installed voice's Name and location to the combobox's list
                    comboBox.Items.Add(info.Description);
                }
            }

        private void button_Click(object sender, RoutedEventArgs e)
        {
            // set the synthesizer to speak
            synth.Speak(textBox.Text);
        }

        private void comboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            // here we are setting the voices for each selected item in the combobox

            try
            {
                if (comboBox.SelectedIndex == 0)
                {
                    synth.SelectVoice("Microsoft Hazel Desktop");
                }

                if (comboBox.SelectedIndex == 1)
                {
                    synth.SelectVoice("Microsoft Heera Desktop");
                }

                if (comboBox.SelectedIndex == 2)
                {
                    synth.SelectVoice("Microsoft David Desktop");
                }

                if (comboBox.SelectedIndex == 3)
                {
                    synth.SelectVoice("Microsoft Zira Desktop");
                }

                if (comboBox.SelectedIndex == 4)
                {
                    synth.SelectVoice("Microsoft Haruka Desktop");
                }

                if (comboBox.SelectedIndex == 5)
                {
                    synth.SelectVoice("Microsoft Heami Desktop");
                }

                if (comboBox.SelectedIndex == 6)
                {
                    synth.SelectVoice("Microsoft Huihui Desktop");
                }

                if (comboBox.SelectedIndex == 7)
                {
                    synth.SelectVoice("Microsoft Tracy Desktop");
                }

                if (comboBox.SelectedIndex == 8)
                {
                    synth.SelectVoice("Microsoft Hanhan Desktop");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

        }
    }
}