Linq on My.Resources (text file)

In VB.Net (VS 2013), I've added a text file as a resource to my project.

In LinqPad, I can query this file and get the desired result:

dim pre = (From line In File.ReadAllLines("F:\zUsers\Kap\Documents\Visual Studio 2013\Projects\LCT\MemberTicketEntry\ValidPrefixes.txt")
where line = "LCT").singleordefault
debug.print (pre)

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If the file contains "LCT" as a line, it gets stored in pre.

But, in Visual Studio, when I substitute the hard coded text file with a resource (with Build set as Content), I get no results:

Dim pre As String = (From line In File.ReadAllLines(My.Resources.ValidPrefixes) _
						Where line = prefix).SingleOrDefault


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I don't get an error, but the Debug.print line never runs, even if I set a break point.

So, my question is:

How can I query a text file that's in my project resources?

PS: I can always just use the hard coded path (with application path), but it seems cleaner to include it as a resource -- for one reason, it would auto update with OneClick installs (I think).
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Dim pre As String = (From line In My.Resources.ValidPrefixes.Split(vbNewLine) _
						Where line = prefix).SingleOrDefault

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KapriceAuthor Commented:
That didnt' work. Breaking on the following line and examining the statement, ValidPrefixes does show the lines of the resources, but pre is set to Nothing.
KapriceAuthor Commented:
This also doesn't work:

Dim aPrefixes = My.Resources.ValidPrefixes.Split(vbNewLine)
		Dim pre As String = (From line In aPrefixes _
		Where line = prefix).SingleOrDefault

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aPrefixes does show the prefix entries. But, pre still is Nothing.
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probably there are spaces or some other invisible chars?
Where line.Contains(prefix)
KapriceAuthor Commented:
I don't know why, but this works, whereas the above, did not (I didn't try contains, though):

Dim prefixes As String()
Dim delimiter As Char() = vbNewLine
prefixes = My.Resources.ValidPrefixes.Split(delimiter)
Dim pre As String = (From p In prefixes Where p = prefix).SingleOrDefault()

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Oops, sorry, it's my fault ;)
Default split constructor accepts Char, not String. vbNewLine usualy is chr(13)+chr(10), thus Split actually use Chr(13) as a delimiter while chr(10) remain in parts.
You can also use overload split with strings:
My.Resources.ValidPrefixes.Split(New String() {vbNewLine}, StringSplitOptions.RemoveEmptyEntries)

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PS. In your example u'r using another overload - an array of chars, where Dim delimeter as Char() splits vbNewLine into 2 chars (chr(13) & chr(10). If you look on prefixes in debugger you can see empty entries. You can add StringSplitOptions.RemoveEmptyEntries to your code as well.
KapriceAuthor Commented:
I awarded this as multiple solutions since the Expert led me in the right direction, but I came up with the solution.

Thanks so much for the help!
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