VB code to Change MP3 Title updates but does not update

Question

I have ripped a cd and just for test purposes have put one mp3 in an empty folder (ie it is the only one there).

Explorer shows file name as "Track01.mp3" also Title as "Track01"
Also VLC media player & Windows mediaplayer show Tile as "Track01"

I want to change the Title so I have used CodeProject exmaple:
https://www.codeproject.com/articles/5590/reading-and-writing-mp3-id3v1-tags

attached is moduke from this site MP3ID3v1

This is my code:
Dim objmp3v1 As New MP3ID3v1("C:\Abc\Track01.mp3")

        If objmp3v1.TagExists Then  
            MessageBox.Show(objmp3v1.Frame(MP3ID3v1.FrameTypes.Title))  
        End If  

        objmp3v1.Frame(MP3ID3v1.FrameTypes.Title) = "Summer Time Blues"  
        objmp3v1.Update()  

        If objmp3v1.TagExists Then  
            MessageBox.Show(objmp3v1.Frame(MP3ID3v1.FrameTypes.Title))  
        End If  

When I run my app, the first message box shows "Track01"
so, my app is reading the same as Explorer & VLC Media Player
The second message box shows "Summer Time Blues"

Checking back in Explorer Title shows "Track01", also VLC Media Player

Running my app a second time, the first message box shows "Summer Time Blues"
so, my app is NOT reading the same as Explorer & VLC Media Player (it did the first time)
The second message box shows "Summer Time Blues"

Again, Checking back in Explorer Title shows "Track01", also VLC Media Player
NB: the file Date Time is updated after running my app.

So, What do I need to alter so Explorer & VLC Media Player & Windows Media Player show: "Summer Time Blues"[enter code here][1]

Answer 1

A test by changing the title of a MP3 with IPropertyStore :

Add at beginning :

Imports System.Runtime.InteropServices

Main code :

Dim sFileName As String = "E:\01. IMANY - Don't Be so Shy (Filatov & Karas Remix).mp3"
Dim sNewTitle As String = "New Title"
Dim pPropertyStore As IPropertyStore = Nothing
Dim hr As HRESULT = SHGetPropertyStoreFromParsingName(sFileName, IntPtr.Zero, GETPROPERTYSTOREFLAGS.GPS_READWRITE, GetType(IPropertyStore).GUID, pPropertyStore)
If hr = HRESULT.S_OK Then
    Dim pv As PROPVARIANT = New PROPVARIANT()
    hr = pPropertyStore.GetValue(PKEY_Title, pv)
    Dim sTitle As String = Marshal.PtrToStringUni(pv.pwszVal)
    Console.WriteLine("Original Title : {0}", sTitle)

    Dim pvNew As PROPVARIANT = New PROPVARIANT()
    pvNew.varType = CUShort(VT.VT_LPWSTR)
    pvNew.pwszVal = Marshal.StringToHGlobalUni(sNewTitle)
    hr = pPropertyStore.SetValue(PKEY_Title, pvNew)
    hr = pPropertyStore.Commit()
    Marshal.ReleaseComObject(pPropertyStore)
End If

with declarations :

Public Enum HRESULT As Integer
    S_OK = 0
    S_FALSE = 1
    E_NOINTERFACE = &H80004002
    E_NOTIMPL = &H80004001
    E_FAIL = &H80004005
    E_UNEXPECTED = &H8000FFFF
    E_OUTOFMEMORY = &H8007000E
End Enum

<DllImport("Shell32.dll", SetLastError:=True, CharSet:=CharSet.Unicode)>
Public Shared Function SHGetPropertyStoreFromParsingName(pszPath As String, pbc As IntPtr, flags As GETPROPERTYSTOREFLAGS,
                       ByRef iid As Guid, <[Out](), MarshalAs(UnmanagedType.Interface)> ByRef propertyStore As IPropertyStore) As HRESULT
End Function

Public Enum GETPROPERTYSTOREFLAGS
    GPS_DEFAULT = 0
    GPS_HANDLERPROPERTIESONLY = &H1
    GPS_READWRITE = &H2
    GPS_TEMPORARY = &H4
    GPS_FASTPROPERTIESONLY = &H8
    GPS_OPENSLOWITEM = &H10
    GPS_DELAYCREATION = &H20
    GPS_BESTEFFORT = &H40
    GPS_NO_OPLOCK = &H80
    GPS_PREFERQUERYPROPERTIES = &H100
    GPS_EXTRINSICPROPERTIES = &H200
    GPS_EXTRINSICPROPERTIESONLY = &H400
    GPS_VOLATILEPROPERTIES = &H800
    GPS_VOLATILEPROPERTIESONLY = &H1000
    GPS_MASK_VALID = &H1FFF
End Enum

<ComImport, Guid("886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)>
Interface IPropertyStore
    Function GetCount(<Out> ByRef propertyCount As UInteger) As HRESULT
    Function GetAt(<[In]> propertyIndex As UInteger, <Out, MarshalAs(UnmanagedType.Struct)> ByRef key As PROPERTYKEY) As HRESULT
    Function GetValue(<[In], MarshalAs(UnmanagedType.Struct)> ByRef key As PROPERTYKEY, <Out, MarshalAs(UnmanagedType.Struct)> ByRef pv As PROPVARIANT) As HRESULT
    Function SetValue(<[In], MarshalAs(UnmanagedType.Struct)> ByRef key As PROPERTYKEY, <[In], MarshalAs(UnmanagedType.Struct)> ByRef pv As PROPVARIANT) As HRESULT
    Function Commit() As HRESULT
End Interface

<StructLayout(LayoutKind.Sequential, Pack:=4)>
Public Structure PROPERTYKEY
    Private fmtid As Guid
    Private pid As Integer

    Public ReadOnly Property FormatId As Guid
        Get
            Return Me.fmtid
        End Get
    End Property

    Public ReadOnly Property PropertyId As Integer
        Get
            Return Me.pid
        End Get
    End Property

    Public Sub New(formatId As Guid, propertyId As Integer)
        Me.fmtid = formatId
        Me.pid = propertyId
    End Sub
End Structure

<StructLayout(LayoutKind.Sequential)>
Public Structure PROPARRAY
    Public cElems As UInteger
    Public pElems As IntPtr
End Structure

<StructLayout(LayoutKind.Explicit, Pack:=1)>
Public Structure PROPVARIANT
    <FieldOffset(0)>
    Public varType As UShort
    <FieldOffset(2)>
    Public wReserved1 As UShort
    <FieldOffset(4)>
    Public wReserved2 As UShort
    <FieldOffset(6)>
    Public wReserved3 As UShort
    <FieldOffset(8)>
    Public bVal As Byte
    <FieldOffset(8)>
    Public cVal As SByte
    <FieldOffset(8)>
    Public uiVal As UShort
    <FieldOffset(8)>
    Public iVal As Short
    <FieldOffset(8)>
    Public uintVal As UInt32
    <FieldOffset(8)>
    Public intVal As Int32
    <FieldOffset(8)>
    Public ulVal As UInt64
    <FieldOffset(8)>
    Public lVal As Int64
    <FieldOffset(8)>
    Public fltVal As Single
    <FieldOffset(8)>
    Public dblVal As Double
    <FieldOffset(8)>
    Public boolVal As Short
    <FieldOffset(8)>
    Public pclsidVal As IntPtr
    <FieldOffset(8)>
    Public pszVal As IntPtr
    <FieldOffset(8)>
    Public pwszVal As IntPtr
    <FieldOffset(8)>
    Public punkVal As IntPtr
    <FieldOffset(8)>
    Public ca As PROPARRAY
    <FieldOffset(8)>
    Public filetime As System.Runtime.InteropServices.ComTypes.FILETIME
End Structure

Public Enum VT As Short
    VT_EMPTY = 0
    VT_NULL = 1
    VT_I2 = 2
    VT_I4 = 3
    VT_R4 = 4
    VT_R8 = 5
    VT_CY = 6
    VT_DATE = 7
    VT_BSTR = 8
    VT_DISPATCH = 9
    VT_ERROR = 10
    VT_BOOL = 11
    VT_VARIANT = 12
    VT_UNKNOWN = 13
    VT_DECIMAL = 14
    VT_I1 = 16
    VT_UI1 = 17
    VT_UI2 = 18
    VT_UI4 = 19
    VT_I8 = 20
    VT_UI8 = 21
    VT_INT = 22
    VT_UINT = 23
    VT_VOID = 24
    VT_HRESULT = 25
    VT_PTR = 26
    VT_SAFEARRAY = 27
    VT_CARRAY = 28
    VT_USERDEFINED = 29
    VT_LPSTR = 30
    VT_LPWSTR = 31
    VT_RECORD = 36
    VT_FILETIME = 64
    VT_BLOB = 65
    VT_STREAM = 66
    VT_STORAGE = 67
    VT_STREAMED_OBJECT = 68
    VT_STORED_OBJECT = 69
    VT_BLOB_OBJECT = 70
    VT_CF = 71
    VT_CLSID = 72
    VT_BSTR_BLOB = 4095
    VT_VECTOR = 4096
    VT_ARRAY = 8192
    VT_BYREF = 16384
    VT_RESERVED = &H8000S
    VT_ILLEGAL = &HFFFFS
    VT_ILLEGALMASKED = 4095
    VT_TYPEMASK = 4095
End Enum

Public Shared ReadOnly PKEY_Title As PROPERTYKEY = New PROPERTYKEY(New Guid("F29F85E0-4FF9-1068-AB91-08002B27B3D9"), 2)

Answer 2

Well, Castorix31, again thanks for your help with previous problems.
You mention "The right method is with "IPropertyStore" I have looked for examples & only found something in C which has "#include <shobjidl.h>" and others which don't seem to translate into vb.

Do I have to entirely replace my code or does "IPropertyStore" just become another statement in my code.
An example would be appreciated
Thanks

Answer 3

Not being proficient in the technical structures of VB, it took me a while to sort out.
So, your assistance is much appreciated & all I can say is "EXCELLENT"
Much appreciated

Answer 4

Yes it has been a while & all is well, However:

Rather than post a new question I wondered if this post was still monitored by Castorix31

What I would like to do is change:
album Title
track number
year
genre
composer

I have looked at the code but cannot see the relationship with what has been mapped

Any help much appreciated