It won't work... do i have to add any DLL reference?

No, but make sure you don't forget the using statement that's necessary for DllImport:

using System.Runtime.InteropServices;

i didn't forget that using statement, and i didn't get some compiler errors

Check your _command text, if it's wrong it won't play.

i checked everything, and the code seems to be ok!

i also tried to run in debug/release mode and also copied the file to a local folder, but nothing helps -.-

Please send the detailed explanation of this code

Hey naice its working but i have little bit problem withit i.e. in which part o fcode ihave to used it instarting of wok with it

That can be easily done by adding a reference to DirectX and using the audioplayback class.

the tutorial is not clear enough, Where do i put the winmm.dll file.

when I try to debug it i get this error, Unable to load DLL 'WINMM.DLL': The specified procedure could not be found. (Exception from HRESULT: 0x8007007F)

i copied the new dll file and it does'nt show any erros, but not playing

Here is the simple way...

//get file
string filePath = "C:/a.mp3";

//play file
System.Diagnostics.Process.Start(filePath);

Regards,
Rohit Nadhe
BE(E

Here is the simple way...

//get file
string filePath = "C:/a.mp3";

//play file
System.Diagnostics.Process.Start(filePath);

Regards,
Rohit Nadhe
BE(E

Here is the simple way...

//get file
string filePath = "C:/a.mp3";

//play file
System.Diagnostics.Process.Start(filePath);

Regards,
Rohit Nadhe
BE(E

Here is the simple way...

//get file
string filePath = "C:/a.mp3";

//play file
System.Diagnostics.Process.Start(filePath);

Regards,
Rohit Nadhe
BE(E

Here is the simple way...

//get file
string filePath = "C:/a.mp3";

//play file
System.Diagnostics.Process.Start(filePath);

Regards,
Rohit Nadhe
BE(E

Rohit Nadhe please stop flood.

Your solution open an external soft to play the mp3 with the default soft define in the OS.

Useless if we want play mp3 thru c# soft

yeah yeah man, please explain this code !

Once in the System Winamp or any Audio player is installed then only this code is woring....otherwise this code is not working...

Can anybody Send the Code to me to play a mp3 song to userdefined player...

A tip for easy mp3 and other format playback is irrKlang, http://www.ambiera.com/irrklang/ .

444

U R IDIOT......BE SERIOUS.......

I wrote all of the above code into an MP3 project I am trying to complete, it has no errors but does not play the selected mp3 file. Does anybody have the working complete source code?? Please send it to me if possible. Thanks Guys

hey guys,
if you take the "if (isOpen)" out of the Play source code it will work. But it plays your selected file via the windows media player..weak..but it works.

hey dude this article stinks real bad. the code ain't workin! you need to explain code more clearly if you're going to write an ARTICLE. You can't just do a half-*

I agree this article is bad, however, the:

//play file
System.Diagnostics.Process.Start(filePath);

does work but it calls the windows media player to play the file path that you put in. So it doesn't use the application that you are building to play the file.

This works for me..

using System;
using System.Runtime.InteropServices;

namespace Mp3player
{
class PlayMusic
{

private string _command;
private bool isOpen;

[DllImport("winmm.dll")]

private static extern long mciSendString(string strCommand,StringBuilder strReturn,int iReturnLength, IntPtr hwndCallback);

public void Close()
{

_command = "close MediaFile";

mciSendString(_command, null, 0, IntPtr.Zero);

isOpen = false;

}

public void Open(string sFileName)
{
_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";
mciSendString(_command, null, 0, IntPtr.Zero);
isOpen = true;
}
public void Play(bool loop)
{
if(isOpen)
{
_command = "play MediaFile";
if (loop)
_command = " REPEAT";
mciSendString(_command, null, 0, IntPtr.Zero);
}
}
}
}

This is my Play class.

And this is the other part..

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Mp3player
{
public partial class Mp3Player : Form
{
PlayMusic p1 = new PlayMusic();
public String CurrentSong = "";

public Mp3Player()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
openFileDialog1.FileName = "";
openFileDialog1.Filter = "Mp3 (*.mp3)|*.mp3";
}

private void button1_Click(object sender, EventArgs e)
{
if (CurrentSong != "")
{
p1.Close();
p1.Open(CurrentSong);
p1.Play(true);
}
}

private void button2_Click(object sender, EventArgs e)
{
p1.Close();
}

private void button3_Click(object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
CurrentSong = openFileDialog1.FileName.ToString();
}
}
}
}

Niwin, you my hero! However I got everything to work with your code except for-->

_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";

this is giving me two errors, they are both ";" expected errors for the line of code above. Am I missing something??? Thanks!

fix for that line:

public void Open(string sFileName)
{
_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";
mciSendString(_command, null, 0, IntPtr.Zero);
isOpen = true;
}

Hi! I'm trying to run this code as a thread(I'm new in that topic) but it doesn't work(program compiles etc. but the music is not playing), code works fine if it's not a new thread.

Anyway here is the code(similar to Niwin's one, I've only removed loop from Play()):

PlayMusic p1 = new PlayMusic();
p1.Open(Path.GetFullPath("...\\music\\" track.Next(22).ToString() ".mp3")); //random track out of 21 tracks from root folder
p1.Play();

and here is as a new thread:

PlayMusic p1 = new PlayMusic();
p1.Open(Path.GetFullPath("...\\music\\" track.Next(21).ToString() ".mp3"));
Thread t = new Thread(p1.Play);
t.IsBackground = true;
t.Start();

As I said first code works fine, program plays random music etc., just the 2nd code doesn't work. What is more if I ran a thread and Play() at the same time, there are two mp3s played(you can hear phase shift).

Thanks for your help!

Hey guys the -->

public void Open(string sFileName)
{
_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";
mciSendString(_command, null, 0, IntPtr.Zero);
isOpen = true;
}

DOESN'T work it throws 4 errors (2 errors are from ;) the other two are only assignment increment, decrement, call, and new expressions can be used as a statement. AM I DOING SOMETHING WRONG?

Elgeniusz,
you are calling two songs @ the same time with your threads

1. p1.Open(Path.GetFullPath("...\\music\\" track.Next(22).ToString() ".mp3")); //random

2. p1.Open(Path.GetFullPath("...\\music\\" track.Next(21).ToString() ".mp3"));

I can't get get it to work when I use these methods in threads.

I was thinking maybe you could use a "if....else" statement? What exactly are you trying to do? you mentioned that one thread 1. works fine, why use the second?

If you are asking me, I want to play constantly random mp3s in a background. I think the best way to to this is to creat a new thread.

Now in my case everything works fine(mp3 is playing etc.) if it's not a new thread.

If I run the code as a new thread I can't hear the mp3.

Elgeniusz, it sounds to me like you need to stop the code in the 1st thread b4 you start the second.

I can't even get one thread to work. The way I am doing it is by starting a new thread and if a certain condition is met the file is to play. But since it's in a thread it doesn't. If I try to play the file without threading it works just fine.

I can't even get one thread to work. The way I am doing it is by starting a new thread and if a certain condition is met the file is to play. But since it's in a thread it doesn't. If I try to play the file without threading it works just fine.

I can't even get one thread to work. The way I am doing it is by starting a new thread and if a certain condition is met the file is to play. But since it's in a thread it doesn't. If I try to play the file without threading it works just fine.

Pieces is asking for the same thing I wanted to ask: How to run this code in a thread?

Sorry for the spam. Elgeniusz, I though you said it worked on the first thread you called, and not on the third.

Second*

Guys I still can't get the code to work...Can someone give me an example of this code that compiles and runs?

public void Open(string sFileName)
{
_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";
mciSendString(_command, null, 0, IntPtr.Zero);
isOpen = true;
}

James, should be
_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";

I think. That will take care of the errors. Not 100% sure if it will work though. I can't remember exactly what I did to make it work.

Thank Pieces, that eliminated 2 errors @ runtime. However, I still get two "; expected" errors with the statement.

Can anyone spare their full source code that actually works w/o errors?? I've been trying to create this mp3 player for about a year now. all I really need is code for a play button to play an mp3 w/o having to use the system.diagnositcs.process.start(filename);

I'm not sure what is wrong... I took the above code that Niwin posted, and added the PlayMusic class. I still get the errors with:

_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";

ALSO, he has some sort of error with the "StringBuiler strReturn" in the code:

private static extern long mciSendString(string strCommand, StringBuilder strReturn, int iReturnLength, IntPtr hwndCallback);

Any Thoughts???

Ok, it looks as if Niwin forgot to tell us that in the "PlayMedia" class that you have to add to your solution --> also add "using System.Text;" this will resolve the "StringBuilder strReturn" error! Now all we need is for someone to help solve the two "; expected" errors on the:

public void Open(string sFileName)
{
_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";
mciSendString(_command, null, 0, IntPtr.Zero);
isOpen = true;
}

Okay Guys your welcome, 6beers later on Christmas Day and I fixed it! make sure to add the dll as a reference in the solution! Here is the source code:

Create a project called Mp3Player, THEN, add a class to your solution call PlayMusic.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Mp3Player
{
public partial class Mp3Player : Form
{
PlayMusic p1 = new PlayMusic();
public String CurrentSong = "";

public Mp3Player()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
openFileDialog1.FileName = "";
openFileDialog1.Filter = "Mp3 (*.mp3)|*.mp3";
}

private void button1_Click(object sender, EventArgs e)
{
if (CurrentSong != "")
{
p1.Close();
p1.Open(CurrentSong);
p1.Play(true);
}
}

private void button2_Click(object sender, EventArgs e)
{
p1.Close();
}

private void button3_Click(object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
CurrentSong = openFileDialog1.FileName.ToString();
}
}

}
}

*****NOW CREATE YOUR CLASS******

using System;
using System.Text;
using System.Runtime.InteropServices;



namespace Mp3Player
{
class PlayMusic
{
private string _command;
private bool isOpen;
[DllImport("winmm.dll")]

private static extern long mciSendString(string strCommand,StringBuilder strReturn, int iReturnLength, IntPtr hwndCallback);

public void Close()
{

_command = "close MediaFile";

mciSendString(_command, null, 0, IntPtr.Zero);

isOpen = false;

}

public void Open(string sFileName)
{

_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";
mciSendString(_command, null, 0, IntPtr.Zero);
isOpen = true;
}



public void Play(bool loop)
{
if (isOpen)
{
_command = "play MediaFile";
if (loop)
_command = " REPEAT";
mciSendString(_command, null, 0, IntPtr.Zero);
}
}
}
}

**Update**
in the above code that I have posted replace the code below with the my last post (or just add the two signs infront and after sFileName)...



public void Open(string sFileName)
{

_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";
mciSendString(_command, null, 0, IntPtr.Zero);
isOpen = true;
}

James here is my source code of the media player. Good luck with your project.

http://ed708cfa.seriousfiles.com

Pieces, you are the MAN!!! Thanks so much, I know this is a simple project but I've been working on it for a longtime (trying to teach myself C#). I'm just know going back for a 4 yr degree in Computer Science this project has def helped me!

Thanks Again,
James

I have a trackbar control that I need linked to a playing media file. Can anyone help/Code?

Hi am trying to play the mp3 file in seperate thread. But it doest play any sound and strange thing is it doesnt throw any exception.. below is the code i used. If any suggestion plz suggest me.....







private string _command;

private bool isOpen;

[DllImport("winmm.dll")]
private static extern long mciSendString(string strCommand,StringBuilder strReturn,int iReturnLength, IntPtr hwndCallback);



public void Close()

{

_command = "close MediaFile";

mciSendString(_command, null, 0, IntPtr.Zero);

isOpen = false;

}



public void Open(string sFileName)

{

_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";

mciSendString(_command, null, 0, IntPtr.Zero);

isOpen = true;

}



public void Play(bool loop)

{

if(isOpen)

{

_command = "play MediaFile";

if (loop)

_command = " REPEAT";

mciSendString(_command, null, 0, IntPtr.Zero);

}

}

private void button1_Click(object sender, EventArgs e)
{
ThreadStart delPlay = delegate
{
Open(@"D:\Songs\01new\i love you.mp3");
Play(false);
};
Thread threadPlaySound = new Thread(delPlay);
threadPlaySound.Name = "threadPlaySound";
threadPlaySound.IsBackground = true;
threadPlaySound.Start();
}

Min, what using statements do you have (at the top of your code) make sure you have the using System.Runtime.InteropServices;

Do you by chance know how to link a media file playing a song/video to a trackbar???

Min, also put a sign infront of, and after sFileName....So it should look like this:

public void Open(string sFileName)
{

_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";

mciSendString(_command, null, 0, IntPtr.Zero);

isOpen = true;

}

Sorry it is not letting me post a plus sign. there needs to be a plus sign infront of, and after sFileName.

GUYS who are starting/having new thread issues-->
referenced from the book Windows Forms 2.0 Programming, PG 741...

Starting a thread is an asynchronous operation in that the current thread of excution continues, executing independently of the new thread. In '.NET, you start a new thread of execution by creating a Thread object from the System.Threading namespace, passing a delegate as the constructor parameter, and invoking the Start method.

Example:

//AsyncCalcPiForm.cs
using System.Threading;
...
partial class AsyncCalcPiForm : Form {
...
void CalcPi(int digits) {...}

Void calcButton_Click(object sender, EventArgs e)
{
this.calcToolStripProgressBar.Visible = true;
this.calcToolStripStatusLabel.Text = "Calculating...";

//Start pi calculation on new thread of execution
Thread piThread = new Thread(CalcPiThreadStart);
piThread.Start((int)This.decimalPlacesNumericUpDown.Value);
}

void CalcPiThreadStart(object digits)
{
//Convert thread start parameter to int
CalcPi((int)digits);
}
}

Hope this helped?

@James

if i comment the threading code then its working fine. But when i try to play in a separate thread it doesnt play any sound. You can see my full code below..

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

using System.Threading;
using System.Runtime.InteropServices;

namespace WindowsApplication6
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}


private string _command;

private bool isOpen;

[DllImport("winmm.dll")]
private static extern long mciSendString(string strCommand,StringBuilder strReturn,int iReturnLength, IntPtr hwndCallback);



public void Close()

{

_command = "close MediaFile";

mciSendString(_command, null, 0, IntPtr.Zero);

isOpen = false;

}



public void Open(string sFileName)

{

_command = "open \"" sFileName "\" type mpegvideo alias MediaFile";

mciSendString(_command, null, 0, IntPtr.Zero);

isOpen = true;

}



public void Play(bool loop)

{

if(isOpen)

{

_command = "play MediaFile";

if (loop)

_command = " REPEAT";

mciSendString(_command, null, 0, IntPtr.Zero);

}

}

private void button1_Click(object sender, EventArgs e)
{
ThreadStart delPlay = delegate
{
Open(@"D:\Songs\01new\i love you.mp3");
Play(false);
};
Thread threadPlaySound = new Thread(delPlay);
threadPlaySound.Name = "threadPlaySound";
threadPlaySound.IsBackground = true;
threadPlaySound.Start();
}
}
}

hi guys i am new in C# and still searching and learning from tutorials. is there a way to play mp3 music in background? i mean no buttons. If you run the form it will automatically play. tnx..

Yes Anne, put your code just underneith your

Public form1()
{
InitializeComponent()
CODE GOES HERE...
}

I want to play Mp3 File using thread in background. but thread will not play sound and also not thrown error. Without thread it works fine. Here is the code....




private void Form2_Load(object sender, EventArgs e)
{
ThreadStart threadDelegate = new ThreadStart(Test);
Thread newThread = new Thread(threadDelegate);
newThread.IsBackground = true;
newThread.Start();
}

private void Test()
{

string FileName = "C:\\test.mp3";
mciSendString("open \"" FileName "\" type mpegvideo alias MediaFile", null, 0, IntPtr.Zero);
mciSendString("play MediaFile", null, 0, IntPtr.Zero);
int status = 1;
while (status == 1)
{
StringBuilder returnData = new StringBuilder(128); // MCI return data
mciSendString("status MediaFile mode", returnData, 128, IntPtr.Zero);
if (returnData.Length == 7

I want to play Mp3 File
using thread in background. but thread will not play sound and also not thrown error. Without thread it works fine.

Any solution Plz.....

use windows media player contrl.

In toolbox right click and select "Choose Items" from popup menu.
click to "COM Components" tab.
Select "Windows Media Player" then click ok.
Now add the "Windows Media Player" control in your form. Default name of the control is axWindowsMediaPlayer1

now put the below code in click event of button1.

private void button1_Click(object sender, EventArgs e)
{
ThreadStart delPlay = delegate
{
this.axWindowsMediaPlayer1.URL = @"E:\Songs\abba__I_have_a_dream.mp3";
};

Thread threadPlaySound = new Thread(delPlay);
threadPlaySound.Name = "threadPlaySound";
threadPlaySound.IsBackground = true;
threadPlaySound.Start();
}


it works fine.

Note :dont forget to use name space
using System.Threading;

Min actually my question is that i want to play MP3 song without using windows media player(axWindowsMediaPlayer1).

so i have used the mciSendString command to play song.

But this command works fine if i am not using thread. but i want to play continuous sound in my background application.

so when i use the thread the sound does not comes. even error is also not thrown.

anything else...?

thanks for reply

yeah i got the same problem before and i could not find any solution for mciSendString. I used the axWindowsMediaPlayer1 control for same purpose. What's the problem you can hide the windows media player control.

thanks...

please give me a simple way to make mp3player using c# And Ado.net.i m waiting please must reply

please give me a simple way to make mp3player using c# And Ado.net.i m waiting please must reply