<div>
I tend to think one of these situations has occurred: 
 
1. a reference to the assembly(ies) was not registered to the project 
2. the namespace is not being properly declared in the project 
 
Reference link: &nbsp;<a href="https://msdn.microsoft.com/en-us/library/sy234eat.aspx" rel="ugc nofollow">https://msdn.microsoft.com/en-us/library/sy234eat.aspx</a> 
 
Are you coding in C# or VB.NET? 
 
Dan
</div>

<div>
Hey, Dan. 
VB 
 
I tried doing this 
Namespace TagLib 
end namespace 
 
And I get a label1 is not declared 
 
This is a sample of the test project I have. 

<pre><code class="code-10 nolinks" id="code-20-42063694-1">Namespace TagLib
 Partial Class _Default
 Inherits System.Web.UI.Page

 Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
 Dim mp3 As TagLib.File = TagLib.File.Create(&quot;G:\VS_Lessons\Media\WebSite1\01Fantasy.mp3&quot;)
 Dim strTitle As String = mp3.Tag.Title
 Dim strDuration As String = mp3.Properties.Duration.ToString(&quot;mm\:ss&quot;)
 Dim strYear As String = mp3.Tag.Year
 Dim strTrackNumber As String = mp3.Tag.Track
 Dim strAlbum As String = mp3.Tag.Album
 'Dim strArtist As String = mp3.Tag.Artists
 Dim strGenre As String = mp3.Tag.FirstGenre


 Label1.Text = &quot;Album: &quot; + strAlbum

 mp3.Dispose()
 End Sub

 End Class
End Namespace
</code></pre>
</div>

<div>
I did this in my default.aspx file 
(Added the Inherits=&quot;TagLib._Default&quot;) 

<pre><code class="code-1 nolinks" id="code-20-42063716-1">&lt;%@ Page Language=&quot;VB&quot; AutoEventWireup=&quot;false&quot; CodeFile=&quot;Default.aspx.vb&quot; Inherits=&quot;TagLib._Default&quot; %&gt;
</code></pre>
 
Fixed the error with the Label1. 
However, still getting 
error: Type 'TagLib.File' is not defined
</div>

<div>
I tried changing the .net framework of the project, as I read that the error can be caused by running a different version of .net. 
However, that did not work either.
</div>

<div>
Did a LOT of search and research to find this one. 
I knew from working with Delphi development years ago, that if you work with a 3rd DLL file, then you have to reference it and distribute that file with your package to the consumer. 
So, with that thinking. 
I did research on Google for asp.net DLL on webpage. 
And I found &nbsp;this link 
<a href="https://blogs.msdn.microsoft.com/tolong/2006/11/16/how-to-get-your-publickeytoken/" rel="ugc">https://blogs.msdn.microsoft.com/tolong/2006/11/16/how-to-get-your-publickeytoken/</a> 
 
You have to run it as Administrator, and it works like a charm. 
Have a good one. 
I am completely psyched now. You all just have no idea. 
This is so exciting, now I get to work on designing the site around this. 
Years in the planning and I finally have the knowledge. 
 
LOVE IT!!!!!!! 
 
Carrzkiss
</div>

<div>
<div class="content wysiwyg-content">
Hello all; 
 
I am using TagLib from here: <a href="http://download.banshee.fm/taglib-sharp/" rel="ugc">http://download.banshee.fm/taglib-sharp/</a>&nbsp;(<a href="https://github.com/mono/taglib-sharp" rel="ugc">https://github.com/mono/taglib-sharp</a>) 
I have it working within VS. 
However, I am designing a website with it, and I need it to run on the website. 
 
When I created the project within VS, and Referenced the .dll files 
It put the dll files inside of: 
BIN 
&nbsp; taglib-sharp.dll 
&nbsp; taglib-sharp.dll.refresh 
 
The Bin folder is also located on the website. 
 
I added all these and they are all grayed out. 
Tells me they are not necessary 

<blockquote>
 
Imports TagLib 
Imports TagLib.IFD 
Imports TagLib.IFD.Tags 
Imports TagLib.Xmp 

</blockquote>
 
I also registered the .dll file with Windows, using the following command. 
 

<pre><code class="code-1 nolinks" id="code-10-29011418-1">%windir%\microsoft.net\framework\v2.0.50727\regasm G:\InetPub\wwwroot\Media\WebSite1\Bin\taglib-sharp.dll /codebase
</code></pre>
 
And I still get the error. 
Type 'TagLib.File' is not defined. 
 
Any idea's on this would be great. 
Carrzkiss
</div>
</div>

Hello all;

I am using TagLib from here: http://download.banshee.fm/taglib-sharp/ (https://github.com/mono/taglib-sharp)
I have it working within VS.
However, I am designing a website with it, and I need it to run on the website.

When I created the project within VS, and Referenced the .dll files
It put the dll files inside of:
BIN
  taglib-sharp.dll
  taglib-sharp.dll.refresh

The Bin folder is also located on the website.

I added all these and they are all grayed out.
Tells me they are not necessary 

Imports TagLib
Imports TagLib.IFD
Imports TagLib.IFD.Tags
Imports TagLib.Xmp


I also registered the .dll file with Windows, using the following command.

(CODE)

And I still get the error.
Type 'TagLib.File' is not defined.

Any idea's on this would be great.
Carrzkiss

TagLib MP3 tag Reader get this error: Type 'TagLib.File' is not defined. (On website, outside of VS)

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