代码如下：
using System;
using System.Runtime.InteropServices;
using System.Text;
using System.IO ;
using System.Windows.Forms;
namespace WindowsApplication7
{
/// <summary>
/// clsMci 的摘要说明。
/// </summary>
public class clsMCI
{
public clsMCI()
{
//
// TODO: 在此处添加构造函数逻辑
//
} //定义API函数使用的字符串变量
[MarshalAs(UnmanagedType.ByValTStr,SizeConst=)]
private string Name = "" ;
[MarshalAs(UnmanagedType.ByValTStr,SizeConst=)]
private string durLength = "" ;
[MarshalAs(UnmanagedType.LPTStr,SizeConst=)]
private string TemStr ="";
int ilong;
//定义播放状态枚举变量
public enum State
{
mPlaying = ,
mPuase = ,
mStop =
};
//结构变量
public struct structMCI
{
public bool bMut;
public int iDur;
public int iPos;
public int iVol;
public int iBal;
public string iName;
public State state;
}; public structMCI mc =new structMCI() ; //取得播放文件属性
public string FileName
{
get
{
return mc.iName;
}
set
{
//ASCIIEncoding asc = new ASCIIEncoding();
try
{
TemStr ="";
TemStr = TemStr.PadLeft(,Convert.ToChar(" "));
Name = Name.PadLeft(,Convert.ToChar(" ")) ;
mc.iName = value;
ilong = APIClass.GetShortPathName(mc.iName,Name, Name.Length);
Name = GetCurrPath(Name);
//Name = "open " + Convert.ToChar(34) + Name + Convert.ToChar(34) + " alias media";
Name = "open " + Convert.ToChar() + Name + Convert.ToChar() + " alias media";
ilong = APIClass.mciSendString("close all", TemStr, TemStr.Length , );
ilong = APIClass.mciSendString( Name, TemStr, TemStr.Length, );
ilong = APIClass.mciSendString("set media time format milliseconds", TemStr, TemStr.Length , );
mc.state = State.mStop;
}
catch
{
}
}
}
//播放 http://sosoft.cnblogs.com/
public void play()
{
TemStr = "";
TemStr = TemStr.PadLeft(,Convert.ToChar(" "));
APIClass.mciSendString("play media", TemStr, TemStr.Length , );
mc.state = State.mPlaying ;
}
//停止
public void StopT()
{
TemStr = "";
TemStr = TemStr.PadLeft(,Convert.ToChar(" "));
ilong = APIClass.mciSendString("close media", TemStr, , );
ilong = APIClass.mciSendString("close all", TemStr, , );
mc.state = State.mStop ;
} public void Puase()
{
TemStr = "";
TemStr = TemStr.PadLeft(,Convert.ToChar(" "));
ilong = APIClass.mciSendString("pause media", TemStr, TemStr.Length, );
mc.state = State.mPuase ;
}
private string GetCurrPath(string name)
{
if(name.Length <) return "";
name = name.Trim();
name = name.Substring(,name.Length-);
return name;
}
//总时间
public int Duration
{
get
{
durLength = "";
durLength = durLength.PadLeft(,Convert.ToChar(" ")) ;
APIClass.mciSendString("status media length", durLength, durLength.Length, );
durLength = durLength.Trim();
if(durLength == "") return ;
return (int)(Convert.ToDouble(durLength) / 1000f);
}
} //当前时间
public int CurrentPosition
{
get
{
durLength = "";
durLength = durLength.PadLeft(,Convert.ToChar(" ")) ;
APIClass.mciSendString("status media position", durLength, durLength.Length, );
mc.iPos = (int)(Convert.ToDouble(durLength) / 1000f);
return mc.iPos;
}
}
} public class APIClass
{
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
public static extern int GetShortPathName (
string lpszLongPath,
string shortFile,
int cchBuffer
); [DllImport("winmm.dll", EntryPoint="mciSendString", CharSet = CharSet.Auto)]
public static extern int mciSendString (
string lpstrCommand,
string lpstrReturnString,
int uReturnLength,
int hwndCallback
);
}
} clsMCI cm = new clsMCI();
cm.FileName = "keleyi.mp3";//文件名
cm.play();