在 Windows 窗体内异步加载声音
using System;using System.Collections.Generic;
using
using System.Drawing;
using System.Media;
using System.Windows.Forms;
namespace SoundPlayerLoadAsyncExample
{
public class Form1 : Form
{
private SoundPlayer Player = new SoundPlayer();
public Form1()
{
InitializeComponent();
this.Player.LoadCompleted += new AsyncCompletedEventHandler(Player_LoadCompleted);
}
private void playSoundButton_Click(object sender, EventArgs e)
{
this.LoadAsyncSound();
}
public void LoadAsyncSound()
{
try
{
// Replace this file name with a valid file name.
this.Player.SoundLocation = "http://www.
this.Player.LoadAsync();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error loading sound");
}
}
// This is the event handler for the LoadCompleted event.
void Player_LoadCompleted(object sender, AsyncCompletedEventArgs e)
{
if (Player.IsLoadCompleted)
{
try
{
this.Player.Play();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error playing sound");
}
}
}
private Button playSoundButton;
/// <summary>
/// Required designer variable.
/// </summary>
private components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.playSoundButton = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// playSoundButton
//
this.playSoundButton.Location = new System.Drawing.Point(106, 112);
this.playSoundButton.Name = "playSoundButton";
this.playSoundButton.Size = new System.Drawing.Size(75, 23);
this.playSoundButton.TabIndex = 0;
this.playSoundButton.Text = "Play Sound";
this.playSoundButton.Click += new System.EventHandler(this.playSoundButton_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.Add(this.playSoundButton);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
#endregion
}
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
}