C#中windows程序使用播放功能

前段時間用到在C#中調用函數實現播放功能，現將代碼總結下：

網上找到的播放單元的代碼：

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace MediaPlay
{
    public class MediaPlays
    {
        [DllImport("WinMM.dll")]
        public  static  extern  bool    PlaySound(byte[]wfname,  int  fuSound);

        public  int  SND_SYNC              =  0x0000;           
        public  int  SND_ASYNC            =  0x0001;           
        public  int  SND_NODEFAULT    =  0x0002;           
        public  int  SND_MEMORY          =  0x0004;           
        public  int  SND_LOOP              =  0x0008;           
        public  int  SND_NOSTOP          =  0x0010;           
        public  int  SND_NOWAIT            =  0x00002000; 
        public  int  SND_ALIAS              =  0x00010000; 
        public  int  SND_ALIAS_ID        =  0x00110000;
        public  int  SND_FILENAME        =  0x00020000; 
        public  int  SND_RESOURCE        =  0x00040004; 
        public  int  SND_PURGE              =  0x0040;         
        public  int  SND_APPLICATION  =  0x0080;         

        //-----------------------------------------------------------------
        public  void  Play(string  wfname,int  SoundFlags)
        {
            byte[]  bname  =  new  Byte[256];       
            bname  =  System.Text.Encoding.ASCII.GetBytes(wfname);
            PlaySound(bname,SoundFlags);
        }
        //-----------------------------------------------------------------
        public  void  StopPlay()
        {
            PlaySound(null,SND_PURGE);
        }
    }
}

自己封裝的播放單元：

using System;
using System.Runtime.InteropServices;
using System.Resources;
using System.IO;

namespace YJZS_Demo
{
    public class Winmm
    {
        public const UInt32 SND_ASYNC = 1;
        public const UInt32 SND_MEMORY = 4;
        public const UInt32 SND_PURGE = 0x0040;

        static FileStream str = null;

        // these 2 overloads we dont need ...
        // [DllImport("Winmm.dll")]
        // public static extern bool PlaySound(IntPtr rsc, IntPtr hMod, UInt32 dwFlags);
        // [DllImport("Winmm.dll")]
        // public static extern bool PlaySound(string Sound, IntPtr hMod, UInt32 dwFlags);

        // this is the overload we want to play embedded resource...
        [DllImport("Winmm.dll")]
        public static extern bool PlaySound(byte[] data, IntPtr hMod, UInt32 dwFlags);
        public Winmm()
        {
        }
        public static void PlayWavResource(string wav)
        {
            // get the namespace
            string strNameSpace =
            System.Reflection.Assembly.GetExecutingAssembly().GetName().Name.ToString();

            // get the resource into a stream
            //Stream str = System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream(strNameSpace + "." + wav);
            //Stream str = System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream(wav);
            str = new FileStream(wav, FileMode.Open);

            if (str == null)
                return;
            // bring stream into a byte array
            byte[] bStr = new Byte[str.Length];
            str.Read(bStr, 0, (int)str.Length);
            // play the resource
            PlaySound(bStr, IntPtr.Zero, SND_ASYNC | SND_MEMORY);
        }

        public static void StopPlay()
        {
            PlaySound(null, IntPtr.Zero, SND_PURGE);
            if (str != null)
            {
                str.Close();
                str = null;
            }
        }
    }
}

在一個頁面的datagrid中調用Winmm類的方法：

using MediaPlay;

        private void dgv1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            switch (e.ColumnIndex)
            {
                case 8:
                    {
                        Winmm.StopPlay();
                        Winmm.PlayWavResource("pt101.wav");
                        break;
                    }
                case 9:
                    {
                        Winmm.StopPlay();
                        break;
                    }
            }
        }