/// <summary>        /// 向媒體控制接口發送控制命令        /// </summary>        /// <param name="lpszCommand">命令，參見        /// http://msdn.microsoft.com/en-us/library/windows/desktop/dd743572(v=vs.85).aspx </param>        /// <param name="lpszReturnString">命令返回的信息，如果沒有需要返回的信息可以為null</param>        /// <param name="cchReturn">指定返回信息的字符串大小</param>        /// <param name="hwndCallback">回調句柄，如果命令參數中沒有指定notify標識，可以為new IntPtr(0)</param>        /// <returns>返回命令執行狀態的錯誤代碼</returns>        [DllImport("winmm.dll")]        static extern Int32 mciSendString(string lpszCommand, StringBuilder returnString, int bufferSize, IntPtr hwndCallback);        /// <summary>        /// 返回對執行狀態錯誤代碼的描述        /// </summary>        /// <param name="errorCode">mciSendCommand或者mciSendString返回的錯誤代碼</param>        /// <param name="errorText">對錯誤代碼的描述字符串</param>        /// <param name="errorTextSize">指定字符串的大小</param>        /// <returns>如果ERROR Code未知，返回false</returns>        [DllImport("winmm.dll")]        static extern bool mciGetErrorString(Int32 errorCode, StringBuilder errorText, Int32 errorTextSize);

int error = mciSendString("open C://Users//Angel//Desktop//123.wav alias myDivece", null, 0, new IntPtr(0));if (error == 0){    mciSendString("play myDivece", null, 0, new IntPtr(0));  //播放}else{    StringBuilder errorText = new StringBuilder();    mciGetErrorString(error, errorText, 50);    MessageBox.Show(errorText.ToString());}