How to play audio files(.wav) asynchronously using Windows Forms
Posted by: Suprotim Agarwal ,
on 2/22/2008,
in
Category WinForms & WinRT
Abstract: In this article, we will explore how to play audio files (.wav) asynchronously using Windows Forms. We will be making use of the System.Media.SoundPlayer class which controls playback of a sound from a .wav file.
How to play audio files(.wav) asynchronously using Windows Forms
In this article, we will explore how to play audio files (.wav) asynchronously using Windows Forms. We will be making use of the System.Media.SoundPlayer class which controls playback of a sound from a .wav file. Let us get started.
Step 1: Create a new windows application. Open Visual Studio > File > New > Project > Windows Application > Rename it to ‘WindowsPlayAudio’.
Step 2: Drag and drop a label, 2 button controls and an OpenFileDialog component to the form. Rename them as follows :
Label1 – lblFile
Button1 – btnOpen
Button2 – btnPlay
TextBox – txtFileNm
OpenFileDialog – Set the Filter to ‘WAV Files|*.wav’
In the Form1.cs, add the following namespace
C#
using System.Media;
VB.NET
Imports System.Media
Step 3: On the ‘btnOpen’ click, display File Open dialog box and accept the selected .wav file in the txtFileNm textbox
C#
if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
txtFileNm.Text = openFileDialog1.FileName;
}
VB.NET
If openFileDialog1.ShowDialog() = System.Windows.Forms.DialogResult.OK Then
txtFileNm.Text = openFileDialog1.FileName
End If
Step 4: Code the btnPlay click event to play the selected file asynchronously
C#
private void btnPlay_Click(object sender, EventArgs e)
{
if (txtFileNm.Text != String.Empty)
{
SoundPlayer wavPlayer = new SoundPlayer();
wavPlayer.SoundLocation = txtFileNm.Text;
wavPlayer.LoadCompleted += new AsyncCompletedEventHandler(wavPlayer_LoadCompleted);
wavPlayer.LoadAsync();
}
}
private void wavPlayer_LoadCompleted(object sender, AsyncCompletedEventArgs e)
{
((System.Media.SoundPlayer)sender).Play();
}
VB.NET
Private Sub btnPlay_Click(ByVal sender As Object, ByVal e As EventArgs)
If txtFileNm.Text <> String.Empty Then
Dim wavPlayer As SoundPlayer = New SoundPlayer()
wavPlayer.SoundLocation = txtFileNm.Text
AddHandler wavPlayer.LoadCompleted, AddressOf wavPlayer_LoadCompleted
wavPlayer.LoadAsync()
End If
End Sub
Private Sub wavPlayer_LoadCompleted(ByVal sender As Object, ByVal e As AsyncCompletedEventArgs)
CType(sender, System.Media.SoundPlayer).Play()
End Sub
Step 5: That’s it. Run the application (F5). Click the Select File button and choose a .wav file. Click on the play button to play the file asynchronously.
In the coming articles, we will explore how to play video files asynchronously in windows forms. I hope you liked the article and I thank you for viewing it.
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Suprotim Agarwal, MCSD, MCAD, MCDBA, MCSE, is the founder of
DotNetCurry,
DNC Magazine for Developers,
SQLServerCurry and
DevCurry. He has also authored a couple of books
51 Recipes using jQuery with ASP.NET Controls and a new one recently at
The Absolutely Awesome jQuery CookBook.
Suprotim has received the prestigious Microsoft MVP award for nine times in a row now. In a professional capacity, he is the CEO of A2Z Knowledge Visuals Pvt Ltd, a digital group that represents premium web sites and digital publications comprising of Professional web, windows, mobile and cloud developers, technical managers, and architects.
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