C # play MP3 source code

The Code is as follows:

1 using System; 2 using System. runtime. interopServices; 3 using System. text; 4 using System. IO; 5 using System. windows. forms; 6 namespace WindowsApplication7 7 {8 /// <summary> 9 /// summary of clsMci. 10 /// </summary> 11 public class clsMCI 12 {13 public clsMCI () 14 {15 // 16 // TODO: add the constructor logic 17 // 18} 19 20 // define the string variable 21 [exploralas (UnmanagedType. byValTStr, SizeConst = 260)] 22 private string Name = ""; 23 [financialas (UnmanagedType. byValTStr, SizeConst = 128)] 24 private string durLength = ""; 25 [financialas (UnmanagedType. LPTStr, SizeConst = 128)] 26 private string TemStr = ""; 27 int ilong; 28 // defines the playback status enumeration variable 29 public enum State 30 {31 mPlaying = 1, 32 mPuase = 2, 33 mStop = 3 34}; 35 // Structure Variable 36 public struct structMCI 37 {38 public bool bMut; 39 public int iDur; 40 public int iPos; 41 public int iVol; 42 public int iBal; 43 public string iName; 44 public State state State; 45}; 46 47 public structMCI mc = new structMCI (); 48 49 // get the playback File Attribute 50 public string FileName 51 {52 get 53 {54 return mc. iName; 55} 56 set 57 {58 // ASCIIEncoding asc = new ASCIIEncoding (); 59 try 60 {61 TemStr = ""; 62 TemStr = TemStr. padLeft (127, Convert. toChar (""); 63 Name = Name. padLeft (260, Convert. toChar (""); 64 mc. iName = value; 65 ilong = APIClass. getmediapathname (mc. iName, Name, Name. length); 66 Name = GetCurrPath (Name); 67 // Name = "open" + Convert. toChar (34) + Name + Convert. toChar (34) + "alias media"; 68 Name = "open" + Convert. toChar (34) + Name + Convert. toChar (34) + "alias media"; 69 ilong = APIClass. mciSendString ("close all", TemStr, TemStr. length, 0); 70 ilong = APIClass. mciSendString (Name, TemStr, TemStr. length, 0); 71 ilong = APIClass. mciSendString ("set media time format milliseconds", TemStr, TemStr. length, 0); 72 mc. state = State. mStop; 73} 74 catch 75 {76} 77} 78} 79 // play http://sosoft.cnblogs.com/ 80 public void play () 81 {82 TemStr = ""; 83 TemStr = TemStr. padLeft (127, Convert. toChar (""); 84 APIClass. mciSendString ("play media", TemStr, TemStr. length, 0); 85 mc. state = State. mPlaying; 86} 87 // stop 88 public void StopT () 89 {90 TemStr = ""; 91 TemStr = TemStr. padLeft (128, Convert. toChar (""); 92 ilong = APIClass. mciSendString ("close media", TemStr, 128, 0); 93 ilong = APIClass. mciSendString ("close all", TemStr, 128, 0); 94 mc. state = State. mStop; 95} 96 97 public void Puase () 98 {99 TemStr = ""; 100 TemStr = TemStr. padLeft (128, Convert. toChar (""); 101 ilong = APIClass. mciSendString ("pause media", TemStr, TemStr. length, 0); 102 mc. state = State. mPuase; 103} 104 private string GetCurrPath (string name) 105 {106 if (name. length <1) return "; 107 name = name. trim (); 108 name = name. substring (0, name. length-1); 109 return name; 110} 111 // total time 112 public int Duration113 {114 get115 {116 durLength = ""; 117 durLength = durLength. padLeft (128, Convert. toChar (""); 118 APIClass. mciSendString ("status media length", durLength, durLength. length, 0); 119 durLength = durLength. trim (); 120 if (durLength = "") return 0; 121 return (int) (Convert. toDouble (durLength)/1000f); 122} 123 124 // current time 125 public int CurrentPosition127 {126 get129 {128 durLength = ""; 130 durLength = durLength. padLeft (128, Convert. toChar (""); 132 APIClass. mciSendString ("status media position", durLength, durLength. length, 0); 133 mc. iPos = (int) (Convert. toDouble (durLength)/1000f); 134 return mc. iPos; 135} 136} 137} 138 139 public class APIClass140 {141 [DllImport ("kernel32.dll", CharSet = CharSet. auto)] 142 public static extern int getaskpathname (143 string lpszLongPath, 144 string partition file, 145 int cchBuffer146); 147 148 [DllImport ("winmm. dll ", EntryPoint =" mciSendString ", CharSet = CharSet. auto)] 149 public static extern int mciSendString (150 string lpstrCommand, 151 string lpstrReturnString, 152 int uReturnLength, 153 int hwndCallback154 ); 155} 156} 157 158 159 160 161 162 clsMCI cm = new clsMCI (); 163. fileName = "keleyi.pdf"; // file name 164. play ();