System.NullReferenceException

[Guest Cokegod]

I have a simple program that plays mp3's, but when i try to call my play sub, it gives me the System.NullReferenceException error.

Here's The Code:

 

(In a different Form)

Dim a as form1

a.play("C:a.mp3")

 

(In Form1)

 

Public Sub Play(ByVal Song As String)

If IsPaused Then

mciSendString("RESUME " & Song, 0&, 0, 0)

IsPaused = False

Else

mciSendString("OPEN " & Song, 0&, 0, 0)

mciSendString("PLAY " & Song, 0&, 0, 0)

End If

End Sub

[Guest Cokegod]

Oh, And the error occurs at this line :

a.play("C:\a.mp3")

 

Note: Yes I made a typo in the original post and forgot the "/"

Thanks

[divil]

You forgot to set a to an instance of the class:

 

a = New Form1()