IsImageFile - Returns whether the file is an image

' Returns a boolean indicating whether the file is an image
Function IsImageFile(ByVal filePath As String) As Boolean
    ' add more extensions if you wish
    Dim extensions() As String = New String() {".bmp", ".jpg", ".jpeg", ".gif", _
        ".tif", ".tiff", ".png", ".tga", ".emf", ".wmf", ".bid"}
    ' return true if the extension of the specified file is contained in the 
    ' array above
    Return (Array.IndexOf(extensions, New System.IO.FileInfo(filePath) _
        .Extension) > -1)
End Function