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SoundPlayer Класс

  • Ссылка

Определение

Пространство имен:
System.Media
Сборка:
System.Windows.Extensions.dll
Сборка:
System.dll
Пакет:
System.Windows.Extensions v6.0.0
Пакет:
System.Windows.Extensions v7.0.0
Пакет:
System.Windows.Extensions v8.0.0
Пакет:
System.Windows.Extensions v9.0.0-preview.2.24128.5
Исходный код:
SoundPlayer.cs
Исходный код:
SoundPlayer.cs
Исходный код:
SoundPlayer.cs

Управляет воспроизведением звукового WAV-файла.

public ref class SoundPlayer : System::ComponentModel::Component, System::Runtime::Serialization::ISerializable
public class SoundPlayer : System.ComponentModel.Component, System.Runtime.Serialization.ISerializable
[System.Serializable]
public class SoundPlayer : System.ComponentModel.Component, System.Runtime.Serialization.ISerializable
type SoundPlayer = class
    inherit Component
    interface ISerializable
[<System.Serializable>]
type SoundPlayer = class
    inherit Component
    interface ISerializable
Public Class SoundPlayer
Inherits Component
Implements ISerializable
Наследование
Object
MarshalByRefObject
Component
SoundPlayer
Атрибуты
SerializableAttribute
Реализации
ISerializable

Примеры

В следующем примере кода показано использование SoundPlayer класса для воспроизведения .wav файлов из локального пути или универсального кода ресурса (URI).

#using <System.Drawing.dll>
#using <System.dll>
#using <System.Windows.Forms.dll>

using namespace System;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::Diagnostics;
using namespace System::Drawing;
using namespace System::Media;
using namespace System::Windows::Forms;

public ref class SoundTestForm: public System::Windows::Forms::Form
{
private:
   System::Windows::Forms::Label ^ label1;
   System::Windows::Forms::TextBox^ filepathTextbox;
   System::Windows::Forms::Button^ playOnceSyncButton;
   System::Windows::Forms::Button^ playOnceAsyncButton;
   System::Windows::Forms::Button^ playLoopAsyncButton;
   System::Windows::Forms::Button^ selectFileButton;
   System::Windows::Forms::Button^ stopButton;
   System::Windows::Forms::StatusBar^ statusBar;
   System::Windows::Forms::Button^ loadSyncButton;
   System::Windows::Forms::Button^ loadAsyncButton;
   SoundPlayer^ player;

public:
   SoundTestForm()
   {
      
      // Initialize Forms Designer generated code.
      InitializeComponent();
      
      // Disable playback controls until a valid .wav file 
      // is selected.
      EnablePlaybackControls( false );
      
      // Set up the status bar and other controls.
      InitializeControls();
      
      // Set up the SoundPlayer object.
      InitializeSound();
   }


private:

   // Sets up the status bar and other controls.
   void InitializeControls()
   {
      
      // Set up the status bar.
      StatusBarPanel^ panel = gcnew StatusBarPanel;
      panel->BorderStyle = StatusBarPanelBorderStyle::Sunken;
      panel->Text = "Ready.";
      panel->AutoSize = StatusBarPanelAutoSize::Spring;
      this->statusBar->ShowPanels = true;
      this->statusBar->Panels->Add( panel );
   }


   // Sets up the SoundPlayer object.
   void InitializeSound()
   {
      
      // Create an instance of the SoundPlayer class.
      player = gcnew SoundPlayer;
      
      // Listen for the LoadCompleted event.
      player->LoadCompleted += gcnew AsyncCompletedEventHandler( this, &SoundTestForm::player_LoadCompleted );
      
      // Listen for the SoundLocationChanged event.
      player->SoundLocationChanged += gcnew EventHandler( this, &SoundTestForm::player_LocationChanged );
   }

   void selectFileButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      
      // Create a new OpenFileDialog.
      OpenFileDialog^ dlg = gcnew OpenFileDialog;
      
      // Make sure the dialog checks for existence of the 
      // selected file.
      dlg->CheckFileExists = true;
      
      // Allow selection of .wav files only.
      dlg->Filter = "WAV files (*.wav)|*.wav";
      dlg->DefaultExt = ".wav";
      
      // Activate the file selection dialog.
      if ( dlg->ShowDialog() == ::DialogResult::OK )
      {
         
         // Get the selected file's path from the dialog.
         this->filepathTextbox->Text = dlg->FileName;
         
         // Assign the selected file's path to 
         // the SoundPlayer object.  
         player->SoundLocation = filepathTextbox->Text;
      }
   }


   // Convenience method for setting message text in 
   // the status bar.
   void ReportStatus( String^ statusMessage )
   {
      
      // If the caller passed in a message...
      if ( (statusMessage != nullptr) && (statusMessage != String::Empty) )
      {
         
         // ...post the caller's message to the status bar.
         this->statusBar->Panels[ 0 ]->Text = statusMessage;
      }
   }


   // Enables and disables play controls.
   void EnablePlaybackControls( bool enabled )
   {
      this->playOnceSyncButton->Enabled = enabled;
      this->playOnceAsyncButton->Enabled = enabled;
      this->playLoopAsyncButton->Enabled = enabled;
      this->stopButton->Enabled = enabled;
   }

   void filepathTextbox_TextChanged( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      
      // Disable playback controls until the new .wav is loaded.
      EnablePlaybackControls( false );
   }

   void loadSyncButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      
      // Disable playback controls until the .wav is 
      // successfully loaded. The LoadCompleted event 
      // handler will enable them.
      EnablePlaybackControls( false );
      
      try
      {
         
         // Assign the selected file's path to 
         // the SoundPlayer object.  
         player->SoundLocation = filepathTextbox->Text;
         
         // Load the .wav file.
         player->Load();
      }
      catch ( Exception^ ex ) 
      {
         ReportStatus( ex->Message );
      }

      
   }

   void loadAsyncButton_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      
      // Disable playback controls until the .wav is 
      // successfully loaded. The LoadCompleted event 
      // handler will enable them.
      EnablePlaybackControls( false );
      
      try
      {
         
         // Assign the selected file's path to 
         // the SoundPlayer object.  
         player->SoundLocation = this->filepathTextbox->Text;
         
         // Load the .wav file.
         player->LoadAsync();
      }
      catch ( Exception^ ex ) 
      {
         ReportStatus( ex->Message );
      }

      
   }


   // Synchronously plays the selected .wav file once.
   // If the file is large, UI response will be visibly 
   // affected.
   void playOnceSyncButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      
      ReportStatus( "Playing .wav file synchronously." );
      player->PlaySync();
      ReportStatus( "Finished playing .wav file synchronously." );
      
   }


   // Asynchronously plays the selected .wav file once.
   void playOnceAsyncButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      
      ReportStatus( "Playing .wav file asynchronously." );
      player->Play();
      
   }


   // Asynchronously plays the selected .wav file until the user
   // clicks the Stop button.
   void playLoopAsyncButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      
      ReportStatus( "Looping .wav file asynchronously." );
      player->PlayLooping();
      
   }


   // Stops the currently playing .wav file, if any.
   void stopButton_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      
      player->Stop();
      ReportStatus( "Stopped by user." );
      
   }


   // Handler for the LoadCompleted event.
   void player_LoadCompleted( Object^ /*sender*/, AsyncCompletedEventArgs^ /*e*/ )
   {
      String^ message = String::Format( "LoadCompleted: {0}", this->filepathTextbox->Text );
      ReportStatus( message );
      EnablePlaybackControls( true );
   }


   // Handler for the SoundLocationChanged event.
   void player_LocationChanged( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      String^ message = String::Format( "SoundLocationChanged: {0}", player->SoundLocation );
      ReportStatus( message );
   }


   void InitializeComponent()
   {
      this->filepathTextbox = gcnew System::Windows::Forms::TextBox;
      this->selectFileButton = gcnew System::Windows::Forms::Button;
      this->label1 = gcnew System::Windows::Forms::Label;
      this->loadSyncButton = gcnew System::Windows::Forms::Button;
      this->playOnceSyncButton = gcnew System::Windows::Forms::Button;
      this->playOnceAsyncButton = gcnew System::Windows::Forms::Button;
      this->stopButton = gcnew System::Windows::Forms::Button;
      this->playLoopAsyncButton = gcnew System::Windows::Forms::Button;
      this->statusBar = gcnew System::Windows::Forms::StatusBar;
      this->loadAsyncButton = gcnew System::Windows::Forms::Button;
      this->SuspendLayout();
      
      // 
      // filepathTextbox
      // 
      this->filepathTextbox->Anchor = (System::Windows::Forms::AnchorStyles)(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right);
      this->filepathTextbox->Location = System::Drawing::Point( 7, 25 );
      this->filepathTextbox->Name = "filepathTextbox";
      this->filepathTextbox->Size = System::Drawing::Size( 263, 20 );
      this->filepathTextbox->TabIndex = 1;
      this->filepathTextbox->Text = "";
      this->filepathTextbox->TextChanged += gcnew System::EventHandler( this, &SoundTestForm::filepathTextbox_TextChanged );
      
      // 
      // selectFileButton
      // 
      this->selectFileButton->Anchor = static_cast<AnchorStyles>(AnchorStyles::Top | AnchorStyles::Right);
      this->selectFileButton->Location = System::Drawing::Point( 276, 25 );
      this->selectFileButton->Name = "selectFileButton";
      this->selectFileButton->Size = System::Drawing::Size( 23, 21 );
      this->selectFileButton->TabIndex = 2;
      this->selectFileButton->Text = "...";
      this->selectFileButton->Click += gcnew System::EventHandler( this, &SoundTestForm::selectFileButton_Click );
      
      // 
      // label1
      // 
      this->label1->Location = System::Drawing::Point( 7, 7 );
      this->label1->Name = "label1";
      this->label1->Size = System::Drawing::Size( 145, 17 );
      this->label1->TabIndex = 3;
      this->label1->Text = ".wav path or URL:";
      
      // 
      // loadSyncButton
      // 
      this->loadSyncButton->Location = System::Drawing::Point( 7, 53 );
      this->loadSyncButton->Name = "loadSyncButton";
      this->loadSyncButton->Size = System::Drawing::Size( 142, 23 );
      this->loadSyncButton->TabIndex = 4;
      this->loadSyncButton->Text = "Load Synchronously";
      this->loadSyncButton->Click += gcnew System::EventHandler( this, &SoundTestForm::loadSyncButton_Click );
      
      // 
      // playOnceSyncButton
      // 
      this->playOnceSyncButton->Location = System::Drawing::Point( 7, 86 );
      this->playOnceSyncButton->Name = "playOnceSyncButton";
      this->playOnceSyncButton->Size = System::Drawing::Size( 142, 23 );
      this->playOnceSyncButton->TabIndex = 5;
      this->playOnceSyncButton->Text = "Play Once Synchronously";
      this->playOnceSyncButton->Click += gcnew System::EventHandler( this, &SoundTestForm::playOnceSyncButton_Click );
      
      // 
      // playOnceAsyncButton
      // 
      this->playOnceAsyncButton->Location = System::Drawing::Point( 149, 86 );
      this->playOnceAsyncButton->Name = "playOnceAsyncButton";
      this->playOnceAsyncButton->Size = System::Drawing::Size( 147, 23 );
      this->playOnceAsyncButton->TabIndex = 6;
      this->playOnceAsyncButton->Text = "Play Once Asynchronously";
      this->playOnceAsyncButton->Click += gcnew System::EventHandler( this, &SoundTestForm::playOnceAsyncButton_Click );
      
      // 
      // stopButton
      // 
      this->stopButton->Location = System::Drawing::Point( 149, 109 );
      this->stopButton->Name = "stopButton";
      this->stopButton->Size = System::Drawing::Size( 147, 23 );
      this->stopButton->TabIndex = 7;
      this->stopButton->Text = "Stop";
      this->stopButton->Click += gcnew System::EventHandler( this, &SoundTestForm::stopButton_Click );
      
      // 
      // playLoopAsyncButton
      // 
      this->playLoopAsyncButton->Location = System::Drawing::Point( 7, 109 );
      this->playLoopAsyncButton->Name = "playLoopAsyncButton";
      this->playLoopAsyncButton->Size = System::Drawing::Size( 142, 23 );
      this->playLoopAsyncButton->TabIndex = 8;
      this->playLoopAsyncButton->Text = "Loop Asynchronously";
      this->playLoopAsyncButton->Click += gcnew System::EventHandler( this, &SoundTestForm::playLoopAsyncButton_Click );
      
      // 
      // statusBar
      // 
      this->statusBar->Location = System::Drawing::Point( 0, 146 );
      this->statusBar->Name = "statusBar";
      this->statusBar->Size = System::Drawing::Size( 306, 22 );
      this->statusBar->SizingGrip = false;
      this->statusBar->TabIndex = 9;
      this->statusBar->Text = "(no status)";
      
      // 
      // loadAsyncButton
      // 
      this->loadAsyncButton->Location = System::Drawing::Point( 149, 53 );
      this->loadAsyncButton->Name = "loadAsyncButton";
      this->loadAsyncButton->Size = System::Drawing::Size( 147, 23 );
      this->loadAsyncButton->TabIndex = 10;
      this->loadAsyncButton->Text = "Load Asynchronously";
      this->loadAsyncButton->Click += gcnew System::EventHandler( this, &SoundTestForm::loadAsyncButton_Click );
      
      // 
      // SoundTestForm
      // 
      this->ClientSize = System::Drawing::Size( 306, 168 );
      this->Controls->Add( this->loadAsyncButton );
      this->Controls->Add( this->statusBar );
      this->Controls->Add( this->playLoopAsyncButton );
      this->Controls->Add( this->stopButton );
      this->Controls->Add( this->playOnceAsyncButton );
      this->Controls->Add( this->playOnceSyncButton );
      this->Controls->Add( this->loadSyncButton );
      this->Controls->Add( this->label1 );
      this->Controls->Add( this->selectFileButton );
      this->Controls->Add( this->filepathTextbox );
      this->MinimumSize = System::Drawing::Size( 310, 165 );
      this->Name = "SoundTestForm";
      this->SizeGripStyle = System::Windows::Forms::SizeGripStyle::Show;
      this->Text = "Sound API Test Form";
      this->ResumeLayout( false );
   }

};


[STAThread]
int main()
{
   Application::Run( gcnew SoundTestForm );
}


using System;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Media;
using System.Windows.Forms;

namespace SoundApiExample
{
    public class SoundTestForm : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.TextBox filepathTextbox;        
        private System.Windows.Forms.Button playOnceSyncButton;
        private System.Windows.Forms.Button playOnceAsyncButton;
        private System.Windows.Forms.Button playLoopAsyncButton;
        private System.Windows.Forms.Button selectFileButton;
        
        private System.Windows.Forms.Button stopButton;
        private System.Windows.Forms.StatusBar statusBar;
        private System.Windows.Forms.Button loadSyncButton;
        private System.Windows.Forms.Button loadAsyncButton;        
        private SoundPlayer player;

        public SoundTestForm()
        {
            // Initialize Forms Designer generated code.
            InitializeComponent();
            
            // Disable playback controls until a valid .wav file 
            // is selected.
            EnablePlaybackControls(false);

            // Set up the status bar and other controls.
            InitializeControls();

            // Set up the SoundPlayer object.
            InitializeSound();
        }

        // Sets up the status bar and other controls.
        private void InitializeControls()
        {
            // Set up the status bar.
            StatusBarPanel panel = new StatusBarPanel();
            panel.BorderStyle = StatusBarPanelBorderStyle.Sunken;
            panel.Text = "Ready.";
            panel.AutoSize = StatusBarPanelAutoSize.Spring;
            this.statusBar.ShowPanels = true;
            this.statusBar.Panels.Add(panel);
        }

        // Sets up the SoundPlayer object.
        private void InitializeSound()
        {
            // Create an instance of the SoundPlayer class.
            player = new SoundPlayer();

            // Listen for the LoadCompleted event.
            player.LoadCompleted += new AsyncCompletedEventHandler(player_LoadCompleted);

            // Listen for the SoundLocationChanged event.
            player.SoundLocationChanged += new EventHandler(player_LocationChanged);
        }

        private void selectFileButton_Click(object sender, 
            System.EventArgs e)
        {
            // Create a new OpenFileDialog.
            OpenFileDialog dlg = new OpenFileDialog();

            // Make sure the dialog checks for existence of the 
            // selected file.
            dlg.CheckFileExists = true;

            // Allow selection of .wav files only.
            dlg.Filter = "WAV files (*.wav)|*.wav";
            dlg.DefaultExt = ".wav";

            // Activate the file selection dialog.
            if (dlg.ShowDialog() == DialogResult.OK)
            {
                // Get the selected file's path from the dialog.
                this.filepathTextbox.Text = dlg.FileName;

                // Assign the selected file's path to 
                // the SoundPlayer object.  
                player.SoundLocation = filepathTextbox.Text;
            }
        }

        // Convenience method for setting message text in 
        // the status bar.
        private void ReportStatus(string statusMessage)
        {
            // If the caller passed in a message...
            if (!string.IsNullOrEmpty(statusMessage))
            {
                // ...post the caller's message to the status bar.
                this.statusBar.Panels[0].Text = statusMessage;
            }
        }
        
        // Enables and disables play controls.
        private void EnablePlaybackControls(bool enabled)
        {   
            this.playOnceSyncButton.Enabled = enabled;
            this.playOnceAsyncButton.Enabled = enabled;
            this.playLoopAsyncButton.Enabled = enabled;
            this.stopButton.Enabled = enabled;
        }
    
        private void filepathTextbox_TextChanged(object sender, 
            EventArgs e)
        {
            // Disable playback controls until the new .wav is loaded.
            EnablePlaybackControls(false);
        }

        private void loadSyncButton_Click(object sender, 
            System.EventArgs e)
        {   
            // Disable playback controls until the .wav is 
            // successfully loaded. The LoadCompleted event 
            // handler will enable them.
            EnablePlaybackControls(false);

            try
            {
                // Assign the selected file's path to 
                // the SoundPlayer object.  
                player.SoundLocation = filepathTextbox.Text;

                // Load the .wav file.
                player.Load();
            }
            catch (Exception ex)
            {
                ReportStatus(ex.Message);
            }
        }

        private void loadAsyncButton_Click(System.Object sender, 
            System.EventArgs e)
        {
            // Disable playback controls until the .wav is 
            // successfully loaded. The LoadCompleted event 
            // handler will enable them.
            EnablePlaybackControls(false);

            try
            {
                // Assign the selected file's path to 
                // the SoundPlayer object.  
                player.SoundLocation = this.filepathTextbox.Text;

                // Load the .wav file.
                player.LoadAsync();
            }
            catch (Exception ex)
            {
                ReportStatus(ex.Message);
            }
        }

        // Synchronously plays the selected .wav file once.
        // If the file is large, UI response will be visibly 
        // affected.
        private void playOnceSyncButton_Click(object sender, 
            System.EventArgs e)
        {	
            ReportStatus("Playing .wav file synchronously.");
            player.PlaySync();
            ReportStatus("Finished playing .wav file synchronously.");
        }

        // Asynchronously plays the selected .wav file once.
        private void playOnceAsyncButton_Click(object sender, 
            System.EventArgs e)
        {
            ReportStatus("Playing .wav file asynchronously.");
            player.Play();
        }

        // Asynchronously plays the selected .wav file until the user
        // clicks the Stop button.
        private void playLoopAsyncButton_Click(object sender, 
            System.EventArgs e)
        {
            ReportStatus("Looping .wav file asynchronously.");
            player.PlayLooping();
        }

        // Stops the currently playing .wav file, if any.
        private void stopButton_Click(System.Object sender,
            System.EventArgs e)
        {	
            player.Stop();
            ReportStatus("Stopped by user.");
        }

        // Handler for the LoadCompleted event.
        private void player_LoadCompleted(object sender, 
            AsyncCompletedEventArgs e)
        {   
            string message = String.Format("LoadCompleted: {0}", 
                this.filepathTextbox.Text);
            ReportStatus(message);
            EnablePlaybackControls(true);
        }

        // Handler for the SoundLocationChanged event.
        private void player_LocationChanged(object sender, EventArgs e)
        {   
            string message = String.Format("SoundLocationChanged: {0}", 
                player.SoundLocation);
            ReportStatus(message);
        }

        private void playSoundFromResource(object sender, EventArgs e)
        {
            System.Reflection.Assembly a = System.Reflection.Assembly.GetExecutingAssembly();
            System.IO.Stream s = a.GetManifestResourceStream("<AssemblyName>.chimes.wav");
            SoundPlayer player = new SoundPlayer(s);
            player.Play();
        }

        #region Windows Form Designer generated code
        private void InitializeComponent()
        {
            this.filepathTextbox = new System.Windows.Forms.TextBox();
            this.selectFileButton = new System.Windows.Forms.Button();
            this.label1 = new System.Windows.Forms.Label();
            this.loadSyncButton = new System.Windows.Forms.Button();
            this.playOnceSyncButton = new System.Windows.Forms.Button();
            this.playOnceAsyncButton = new System.Windows.Forms.Button();
            this.stopButton = new System.Windows.Forms.Button();
            this.playLoopAsyncButton = new System.Windows.Forms.Button();
            this.statusBar = new System.Windows.Forms.StatusBar();
            this.loadAsyncButton = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // filepathTextbox
            // 
            this.filepathTextbox.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right)));
            this.filepathTextbox.Location = new System.Drawing.Point(7, 25);
            this.filepathTextbox.Name = "filepathTextbox";
            this.filepathTextbox.Size = new System.Drawing.Size(263, 20);
            this.filepathTextbox.TabIndex = 1;
            this.filepathTextbox.Text = "";
            this.filepathTextbox.TextChanged += new System.EventHandler(this.filepathTextbox_TextChanged);
            // 
            // selectFileButton
            // 
            this.selectFileButton.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
            this.selectFileButton.Location = new System.Drawing.Point(276, 25);
            this.selectFileButton.Name = "selectFileButton";
            this.selectFileButton.Size = new System.Drawing.Size(23, 21);
            this.selectFileButton.TabIndex = 2;
            this.selectFileButton.Text = "...";
            this.selectFileButton.Click += new System.EventHandler(this.selectFileButton_Click);
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point(7, 7);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(145, 17);
            this.label1.TabIndex = 3;
            this.label1.Text = ".wav path or URL:";
            // 
            // loadSyncButton
            // 
            this.loadSyncButton.Location = new System.Drawing.Point(7, 53);
            this.loadSyncButton.Name = "loadSyncButton";
            this.loadSyncButton.Size = new System.Drawing.Size(142, 23);
            this.loadSyncButton.TabIndex = 4;
            this.loadSyncButton.Text = "Load Synchronously";
            this.loadSyncButton.Click += new System.EventHandler(this.loadSyncButton_Click);
            // 
            // playOnceSyncButton
            // 
            this.playOnceSyncButton.Location = new System.Drawing.Point(7, 86);
            this.playOnceSyncButton.Name = "playOnceSyncButton";
            this.playOnceSyncButton.Size = new System.Drawing.Size(142, 23);
            this.playOnceSyncButton.TabIndex = 5;
            this.playOnceSyncButton.Text = "Play Once Synchronously";
            this.playOnceSyncButton.Click += new System.EventHandler(this.playOnceSyncButton_Click);
            // 
            // playOnceAsyncButton
            // 
            this.playOnceAsyncButton.Location = new System.Drawing.Point(149, 86);
            this.playOnceAsyncButton.Name = "playOnceAsyncButton";
            this.playOnceAsyncButton.Size = new System.Drawing.Size(147, 23);
            this.playOnceAsyncButton.TabIndex = 6;
            this.playOnceAsyncButton.Text = "Play Once Asynchronously";
            this.playOnceAsyncButton.Click += new System.EventHandler(this.playOnceAsyncButton_Click);
            // 
            // stopButton
            // 
            this.stopButton.Location = new System.Drawing.Point(149, 109);
            this.stopButton.Name = "stopButton";
            this.stopButton.Size = new System.Drawing.Size(147, 23);
            this.stopButton.TabIndex = 7;
            this.stopButton.Text = "Stop";
            this.stopButton.Click += new System.EventHandler(this.stopButton_Click);
            // 
            // playLoopAsyncButton
            // 
            this.playLoopAsyncButton.Location = new System.Drawing.Point(7, 109);
            this.playLoopAsyncButton.Name = "playLoopAsyncButton";
            this.playLoopAsyncButton.Size = new System.Drawing.Size(142, 23);
            this.playLoopAsyncButton.TabIndex = 8;
            this.playLoopAsyncButton.Text = "Loop Asynchronously";
            this.playLoopAsyncButton.Click += new System.EventHandler(this.playLoopAsyncButton_Click);
            // 
            // statusBar
            // 
            this.statusBar.Location = new System.Drawing.Point(0, 146);
            this.statusBar.Name = "statusBar";
            this.statusBar.Size = new System.Drawing.Size(306, 22);
            this.statusBar.SizingGrip = false;
            this.statusBar.TabIndex = 9;
            this.statusBar.Text = "(no status)";
            // 
            // loadAsyncButton
            // 
            this.loadAsyncButton.Location = new System.Drawing.Point(149, 53);
            this.loadAsyncButton.Name = "loadAsyncButton";
            this.loadAsyncButton.Size = new System.Drawing.Size(147, 23);
            this.loadAsyncButton.TabIndex = 10;
            this.loadAsyncButton.Text = "Load Asynchronously";
            this.loadAsyncButton.Click += new System.EventHandler(this.loadAsyncButton_Click);
            // 
            // SoundTestForm
            // 
            this.ClientSize = new System.Drawing.Size(306, 168);
            this.Controls.Add(this.loadAsyncButton);
            this.Controls.Add(this.statusBar);
            this.Controls.Add(this.playLoopAsyncButton);
            this.Controls.Add(this.stopButton);
            this.Controls.Add(this.playOnceAsyncButton);
            this.Controls.Add(this.playOnceSyncButton);
            this.Controls.Add(this.loadSyncButton);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.selectFileButton);
            this.Controls.Add(this.filepathTextbox);
            this.MinimumSize = new System.Drawing.Size(310, 165);
            this.Name = "SoundTestForm";
            this.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Show;
            this.Text = "Sound API Test Form";
            this.ResumeLayout(false);
        }
        #endregion
        
        [STAThread]
        static void Main()
        {
            Application.Run(new SoundTestForm());
        }
    }
}

Imports System.Collections
Imports System.ComponentModel
Imports System.Diagnostics
Imports System.Drawing
Imports System.Media
Imports System.Windows.Forms

Public Class SoundTestForm
    Inherits System.Windows.Forms.Form
    Private label1 As System.Windows.Forms.Label
    Private WithEvents filepathTextbox As System.Windows.Forms.TextBox
    Private WithEvents playOnceSyncButton As System.Windows.Forms.Button
    Private WithEvents playOnceAsyncButton As System.Windows.Forms.Button
    Private WithEvents playLoopAsyncButton As System.Windows.Forms.Button
    Private WithEvents selectFileButton As System.Windows.Forms.Button

    Private WithEvents stopButton As System.Windows.Forms.Button
    Private statusBar As System.Windows.Forms.StatusBar
    Private WithEvents loadSyncButton As System.Windows.Forms.Button
    Private WithEvents loadAsyncButton As System.Windows.Forms.Button
    Private player As SoundPlayer


    Public Sub New()

        ' Initialize Forms Designer generated code.
        InitializeComponent()

        ' Disable playback controls until a valid .wav file 
        ' is selected.
        EnablePlaybackControls(False)

        ' Set up the status bar and other controls.
        InitializeControls()

        ' Set up the SoundPlayer object.
        InitializeSound()

    End Sub


    ' Sets up the status bar and other controls.
    Private Sub InitializeControls()

        ' Set up the status bar.
        Dim panel As New StatusBarPanel
        panel.BorderStyle = StatusBarPanelBorderStyle.Sunken
        panel.Text = "Ready."
        panel.AutoSize = StatusBarPanelAutoSize.Spring
        Me.statusBar.ShowPanels = True
        Me.statusBar.Panels.Add(panel)

    End Sub


    ' Sets up the SoundPlayer object.
    Private Sub InitializeSound()

        ' Create an instance of the SoundPlayer class.
        player = New SoundPlayer

        ' Listen for the LoadCompleted event.
        AddHandler player.LoadCompleted, AddressOf player_LoadCompleted

        ' Listen for the SoundLocationChanged event.
        AddHandler player.SoundLocationChanged, AddressOf player_LocationChanged

    End Sub


    Private Sub selectFileButton_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles selectFileButton.Click

        ' Create a new OpenFileDialog.
        Dim dlg As New OpenFileDialog

        ' Make sure the dialog checks for existence of the 
        ' selected file.
        dlg.CheckFileExists = True

        ' Allow selection of .wav files only.
        dlg.Filter = "WAV files (*.wav)|*.wav"
        dlg.DefaultExt = ".wav"

        ' Activate the file selection dialog.
        If dlg.ShowDialog() = System.Windows.Forms.DialogResult.OK Then
            ' Get the selected file's path from the dialog.
            Me.filepathTextbox.Text = dlg.FileName

            ' Assign the selected file's path to the SoundPlayer object.
            player.SoundLocation = filepathTextbox.Text
        End If

    End Sub


    ' Convenience method for setting message text in 
    ' the status bar.
    Private Sub ReportStatus(ByVal statusMessage As String)

        ' If the caller passed in a message...
        If (statusMessage IsNot Nothing) AndAlso _
            statusMessage <> [String].Empty Then
            ' ...post the caller's message to the status bar.
            Me.statusBar.Panels(0).Text = statusMessage
        End If

    End Sub


    ' Enables and disables play controls.
    Private Sub EnablePlaybackControls(ByVal enabled As Boolean)

        Me.playOnceSyncButton.Enabled = enabled
        Me.playOnceAsyncButton.Enabled = enabled
        Me.playLoopAsyncButton.Enabled = enabled
        Me.stopButton.Enabled = enabled

    End Sub


    Private Sub filepathTextbox_TextChanged(ByVal sender As Object, _
        ByVal e As EventArgs) Handles filepathTextbox.TextChanged

        ' Disable playback controls until the new .wav is loaded.
        EnablePlaybackControls(False)

    End Sub


    Private Sub loadSyncButton_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles loadSyncButton.Click

        ' Disable playback controls until the .wav is successfully
        ' loaded. The LoadCompleted event handler will enable them.
        EnablePlaybackControls(False)

        Try
            ' Assign the selected file's path to the SoundPlayer object.
            player.SoundLocation = filepathTextbox.Text

            ' Load the .wav file.
            player.Load()
        Catch ex As Exception
            ReportStatus(ex.Message)
        End Try

    End Sub


    Private Sub loadAsyncButton_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles loadAsyncButton.Click

        ' Disable playback controls until the .wav is successfully
        ' loaded. The LoadCompleted event handler will enable them.
        EnablePlaybackControls(False)

        Try
            ' Assign the selected file's path to the SoundPlayer object.
            player.SoundLocation = Me.filepathTextbox.Text

            ' Load the .wav file.
            player.LoadAsync()
        Catch ex As Exception
            ReportStatus(ex.Message)
        End Try

    End Sub


    ' Synchronously plays the selected .wav file once.
    ' If the file is large, UI response will be visibly 
    ' affected.
    Private Sub playOnceSyncButton_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles playOnceSyncButton.Click

        ReportStatus("Playing .wav file synchronously.")
        player.PlaySync()
        ReportStatus("Finished playing .wav file synchronously.")
    End Sub


    ' Asynchronously plays the selected .wav file once.
    Private Sub playOnceAsyncButton_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles playOnceAsyncButton.Click

        ReportStatus("Playing .wav file asynchronously.")
        player.Play()

    End Sub


    ' Asynchronously plays the selected .wav file until the user
    ' clicks the Stop button.
    Private Sub playLoopAsyncButton_Click(ByVal sender As Object, _
        ByVal e As System.EventArgs) Handles playLoopAsyncButton.Click

        ReportStatus("Looping .wav file asynchronously.")
        player.PlayLooping()

    End Sub


    ' Stops the currently playing .wav file, if any.
    Private Sub stopButton_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles stopButton.Click

        player.Stop()
        ReportStatus("Stopped by user.")

    End Sub


    ' Handler for the LoadCompleted event.
    Private Sub player_LoadCompleted(ByVal sender As Object, _
        ByVal e As AsyncCompletedEventArgs)

        Dim message As String = [String].Format("LoadCompleted: {0}", _
            Me.filepathTextbox.Text)
        ReportStatus(message)
        EnablePlaybackControls(True)

    End Sub

    ' Handler for the SoundLocationChanged event.
    Private Sub player_LocationChanged(ByVal sender As Object, _
        ByVal e As EventArgs)
        Dim message As String = [String].Format("SoundLocationChanged: {0}", _
            player.SoundLocation)
        ReportStatus(message)
    End Sub

    Private Sub playSoundFromResource(ByVal sender As Object, _
    ByVal e As EventArgs)
        Dim a As System.Reflection.Assembly = System.Reflection.Assembly.GetExecutingAssembly()
        Dim s As System.IO.Stream = a.GetManifestResourceStream("<AssemblyName>.chimes.wav")
        Dim player As SoundPlayer = New SoundPlayer(s)
        player.Play()
    End Sub

    Private Sub InitializeComponent()
        Me.filepathTextbox = New System.Windows.Forms.TextBox
        Me.selectFileButton = New System.Windows.Forms.Button
        Me.label1 = New System.Windows.Forms.Label
        Me.loadSyncButton = New System.Windows.Forms.Button
        Me.playOnceSyncButton = New System.Windows.Forms.Button
        Me.playOnceAsyncButton = New System.Windows.Forms.Button
        Me.stopButton = New System.Windows.Forms.Button
        Me.playLoopAsyncButton = New System.Windows.Forms.Button
        Me.statusBar = New System.Windows.Forms.StatusBar
        Me.loadAsyncButton = New System.Windows.Forms.Button
        Me.SuspendLayout()
        ' 
        ' filepathTextbox
        ' 
        Me.filepathTextbox.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
        Me.filepathTextbox.Location = New System.Drawing.Point(7, 25)
        Me.filepathTextbox.Name = "filepathTextbox"
        Me.filepathTextbox.Size = New System.Drawing.Size(263, 20)
        Me.filepathTextbox.TabIndex = 1
        Me.filepathTextbox.Text = ""
        ' 
        ' selectFileButton
        ' 
        Me.selectFileButton.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
        Me.selectFileButton.Location = New System.Drawing.Point(276, 25)
        Me.selectFileButton.Name = "selectFileButton"
        Me.selectFileButton.Size = New System.Drawing.Size(23, 21)
        Me.selectFileButton.TabIndex = 2
        Me.selectFileButton.Text = "..."
        ' 
        ' label1
        ' 
        Me.label1.Location = New System.Drawing.Point(7, 7)
        Me.label1.Name = "label1"
        Me.label1.Size = New System.Drawing.Size(145, 17)
        Me.label1.TabIndex = 3
        Me.label1.Text = ".wav path or URL:"
        ' 
        ' loadSyncButton
        ' 
        Me.loadSyncButton.Location = New System.Drawing.Point(7, 53)
        Me.loadSyncButton.Name = "loadSyncButton"
        Me.loadSyncButton.Size = New System.Drawing.Size(142, 23)
        Me.loadSyncButton.TabIndex = 4
        Me.loadSyncButton.Text = "Load Synchronously"
        ' 
        ' playOnceSyncButton
        ' 
        Me.playOnceSyncButton.Location = New System.Drawing.Point(7, 86)
        Me.playOnceSyncButton.Name = "playOnceSyncButton"
        Me.playOnceSyncButton.Size = New System.Drawing.Size(142, 23)
        Me.playOnceSyncButton.TabIndex = 5
        Me.playOnceSyncButton.Text = "Play Once Synchronously"
        ' 
        ' playOnceAsyncButton
        ' 
        Me.playOnceAsyncButton.Location = New System.Drawing.Point(149, 86)
        Me.playOnceAsyncButton.Name = "playOnceAsyncButton"
        Me.playOnceAsyncButton.Size = New System.Drawing.Size(147, 23)
        Me.playOnceAsyncButton.TabIndex = 6
        Me.playOnceAsyncButton.Text = "Play Once Asynchronously"
        ' 
        ' stopButton
        ' 
        Me.stopButton.Location = New System.Drawing.Point(149, 109)
        Me.stopButton.Name = "stopButton"
        Me.stopButton.Size = New System.Drawing.Size(147, 23)
        Me.stopButton.TabIndex = 7
        Me.stopButton.Text = "Stop"
        ' 
        ' playLoopAsyncButton
        ' 
        Me.playLoopAsyncButton.Location = New System.Drawing.Point(7, 109)
        Me.playLoopAsyncButton.Name = "playLoopAsyncButton"
        Me.playLoopAsyncButton.Size = New System.Drawing.Size(142, 23)
        Me.playLoopAsyncButton.TabIndex = 8
        Me.playLoopAsyncButton.Text = "Loop Asynchronously"
        ' 
        ' statusBar
        ' 
        Me.statusBar.Location = New System.Drawing.Point(0, 146)
        Me.statusBar.Name = "statusBar"
        Me.statusBar.Size = New System.Drawing.Size(306, 22)
        Me.statusBar.SizingGrip = False
        Me.statusBar.TabIndex = 9
        Me.statusBar.Text = "(no status)"
        ' 
        ' loadAsyncButton
        ' 
        Me.loadAsyncButton.Location = New System.Drawing.Point(149, 53)
        Me.loadAsyncButton.Name = "loadAsyncButton"
        Me.loadAsyncButton.Size = New System.Drawing.Size(147, 23)
        Me.loadAsyncButton.TabIndex = 10
        Me.loadAsyncButton.Text = "Load Asynchronously"
        ' 
        ' SoundTestForm
        '
        Me.ClientSize = New System.Drawing.Size(306, 168)
        Me.Controls.Add(loadAsyncButton)
        Me.Controls.Add(statusBar)
        Me.Controls.Add(playLoopAsyncButton)
        Me.Controls.Add(stopButton)
        Me.Controls.Add(playOnceAsyncButton)
        Me.Controls.Add(playOnceSyncButton)
        Me.Controls.Add(loadSyncButton)
        Me.Controls.Add(label1)
        Me.Controls.Add(selectFileButton)
        Me.Controls.Add(filepathTextbox)
        Me.MinimumSize = New System.Drawing.Size(310, 165)
        Me.Name = "SoundTestForm"
        Me.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Show
        Me.Text = "Sound API Test Form"
        Me.ResumeLayout(False)
    End Sub

    <STAThread()> _
    Shared Sub Main()
        Application.Run(New SoundTestForm)
    End Sub
End Class

Комментарии

Класс SoundPlayer предоставляет простой интерфейс для загрузки и воспроизведения файла .wav. Класс SoundPlayer поддерживает загрузку файла .wav из пути к файлу, URL-адреса, Stream файла .wav или внедренного ресурса, содержащего файл .wav.

Чтобы воспроизвести звук с помощью SoundPlayer класса , настройте SoundPlayer с путем к файлу .wav и вызовите один из методов воспроизведения. Вы можете определить файл .wav для воспроизведения, используя один из конструкторов или задав свойство SoundLocation или Stream . Файл можно загрузить перед воспроизведением с помощью одного из методов загрузки или отложить загрузку до вызова одного из методов воспроизведения. Объект , SoundPlayer настроенный для загрузки файла .wav с Stream URL-адреса или , должен загрузить файл .wav в память перед началом воспроизведения.

Вы можете загружать или воспроизводить файл .wav синхронно или асинхронно. При вызове синхронного метода загрузки или воспроизведения вызывающий поток будет ожидать возврата метода, что может привести к прерыванию рисования и других событий. Вызов асинхронного метода load или play позволит вызывающему потоку продолжать работу без прерывания. Дополнительные сведения об асинхронных вызовах методов см. в разделе Практическое руководство. Выполнение операции в фоновом режиме.

SoundPlayer После завершения загрузки файла .wav вызывается LoadCompleted событие . Вы можете проверить в обработчике AsyncCompletedEventArgs событий, чтобы определить, была ли загрузка успешной или неудачной. Событие SoundLocationChanged возникает, когда источнику звука присваивается новый путь к файлу или URL-адрес. Событие StreamChanged возникает, когда для источника звука задан новый Stream. Дополнительные сведения об обработке событий см. в разделе Обработка и создание событий.

Дополнительные сведения о см. в разделе Общие сведения о SoundPlayerклассе SoundPlayer.

Примечание

Класс SoundPlayer не может воспроизводить файлы других типов, например .wma или .mp3. Если вы хотите воспроизвести файлы других типов, можно использовать элемент управления Медиаплеер Windows. Дополнительные сведения см. в разделах Использование элемента управления Медиаплеер Windows в решении платформа .NET Framework и Справочник по объектной модели Медиаплеер Windows для Visual Basic .NET и C# в пакете SDK для Медиаплеер Windows.

Конструкторы

SoundPlayer()

Инициализирует новый экземпляр класса SoundPlayer.
SoundPlayer(SerializationInfo, StreamingContext)
Устаревшие..

Инициализирует новый экземпляр класса SoundPlayer.
SoundPlayer(Stream)

Инициализирует новый экземпляр класса SoundPlayer и подключает WAV-файл в заданном потоке Stream.
SoundPlayer(String)

Инициализирует новый экземпляр класса SoundPlayer и подключает указанный WAV-файл.

Свойства

CanRaiseEvents

Возвращает значение, показывающее, может ли компонент вызывать событие.

(Унаследовано от Component)
Container

Возвращает объект IContainer, который содержит коллекцию Component.

(Унаследовано от Component)
DesignMode

Возвращает значение, указывающее, находится ли данный компонент Component в режиме конструктора в настоящее время.

(Унаследовано от Component)
Events

Возвращает список обработчиков событий, которые прикреплены к этому объекту Component.

(Унаследовано от Component)
IsLoadCompleted

Получает значение, показывающее, успешно ли выполнена загрузка WAV-файла.
LoadTimeout

Возвращает или задает время в миллисекундах, за которое должен быть загружен WAV-файл.
Site

Получает или задает ISite объекта Component.

(Унаследовано от Component)
SoundLocation

Возвращает или задает путь к файлу или URL-адрес загружаемого WAV-файла.
Stream

Возвращает или задает поток Stream для загрузки WAV-файла.
Tag

Возвращает или задает объект Object, содержащий сведения об объекте SoundPlayer.

Методы

CreateObjRef(Type)

Создает объект, который содержит всю необходимую информацию для создания прокси-сервера, используемого для взаимодействия с удаленным объектом.

(Унаследовано от MarshalByRefObject)
Dispose()

Освобождает все ресурсы, занятые модулем Component.

(Унаследовано от Component)
Dispose(Boolean)

Освобождает неуправляемые ресурсы, используемые объектом Component, а при необходимости освобождает также управляемые ресурсы.

(Унаследовано от Component)
Equals(Object)

Определяет, равен ли указанный объект текущему объекту.

(Унаследовано от Object)
GetHashCode()

Служит хэш-функцией по умолчанию.

(Унаследовано от Object)
GetLifetimeService()
Устаревшие..

Извлекает объект обслуживания во время существования, который управляет политикой времени существования данного экземпляра.

(Унаследовано от MarshalByRefObject)
GetService(Type)

Возвращает объект, представляющий службу, предоставляемую классом Component или классом Container.

(Унаследовано от Component)
GetType()

Возвращает объект Type для текущего экземпляра.

(Унаследовано от Object)
InitializeLifetimeService()
Устаревшие..

Получает объект службы времени существования для управления политикой времени существования для этого экземпляра.

(Унаследовано от MarshalByRefObject)
Load()

Загружает звук синхронно.
LoadAsync()

Загружает WAV-файл из потока или веб-ресурса с использованием нового потока.
MemberwiseClone()

Создает неполную копию текущего объекта Object.

(Унаследовано от Object)
MemberwiseClone(Boolean)

Создает неполную копию текущего объекта MarshalByRefObject.

(Унаследовано от MarshalByRefObject)
OnLoadCompleted(AsyncCompletedEventArgs)

Вызывает событие LoadCompleted.
OnSoundLocationChanged(EventArgs)

Вызывает событие SoundLocationChanged.
OnStreamChanged(EventArgs)

Вызывает событие StreamChanged.
Play()

Воспроизводит WAV-файл с использованием нового потока; предварительно загружает WAV-файл, если он еще не был загружен.
PlayLooping()

Циклически воспроизводит WAV-файл с использованием нового потока; предварительно загружает WAV-файл, если он еще не был загружен.
PlaySync()

Воспроизводит WAV-файл и загружает WAV-файл, если он еще не был загружен.
Stop()

Останавливает воспроизведение звукового файла, если оно выполняется.
ToString()

Возвращает объект String, содержащий имя Component, если оно есть. Этот метод не следует переопределять.

(Унаследовано от Component)

События

Disposed

Возникает при удалении компонента путем вызова метода Dispose().

(Унаследовано от Component)
LoadCompleted

Происходит при успешной или неуспешной загрузке WAV-файла.
SoundLocationChanged

Происходит после задания нового пути к источнику звукового файла в объекте SoundPlayer.
StreamChanged

Происходит после задания нового потока Stream для источника звукового файла в объекте SoundPlayer.

Явные реализации интерфейса

ISerializable.GetObjectData(SerializationInfo, StreamingContext)

Описание этого элемента содержится в методе GetObjectData(SerializationInfo, StreamingContext).

Применяется к

См. также раздел