#Region " Get Files "
 
    ' [ Get Files Function ]
    '
    ' // By Elektro H@cker
    '
    ' Examples :
    '
    ' For Each file In Get_Files("C:\Windows", False) : MsgBox(file.Name) : Next
    '
    ' For Each file In Get_Files("C:\Windows", True, "dll")   : MsgBox(file.Name) : Next
    ' For Each file In Get_Files("C:\Windows", True, ".dll")  : MsgBox(file.Name) : Next
    ' For Each file In Get_Files("C:\Windows", True, "*.dll") : MsgBox(file.Name) : Next
    '
    ' For Each file In Get_Files("C:\Windows", False, {"dll", "ini"})     : MsgBox(file.Name) : Next
    ' For Each file In Get_Files("C:\Windows", False, {".dll", ".ini"})   : MsgBox(file.Name) : Next
    ' For Each file In Get_Files("C:\Windows", False, {"*.dll", "*.ini"}) : MsgBox(file.Name) : Next
 
    ' Get Files {directory} {recursive}
    Private Function Get_Files(ByVal directory As String, ByVal recursive As Boolean) As List(Of IO.FileInfo)
        Dim searchOpt As IO.SearchOption = If(recursive, IO.SearchOption.AllDirectories, IO.SearchOption.TopDirectoryOnly)
        Return IO.Directory.GetFiles(directory, "*", searchOpt).Select(Function(p) New IO.FileInfo(p)).ToList
    End Function
 
    ' Get Files {directory} {recursive} {ext}
    Private Function Get_Files(ByVal directory As String, ByVal recursive As Boolean, ext As String) As List(Of IO.FileInfo)
 
        If ext.StartsWith("*") Then
            ext = ext.Substring(1, ext.Length - 1)
        ElseIf Not ext = "*" AndAlso Not ext.StartsWith(".") Then
            ext = ("." & ext)
        ElseIf ext = "*" Then
            ext = Nothing
        End If
 
        Dim searchOpt As IO.SearchOption = If(recursive, IO.SearchOption.AllDirectories, IO.SearchOption.TopDirectoryOnly)
        Return IO.Directory.GetFiles(directory, "*" & ext, searchOpt).Select(Function(p) New IO.FileInfo(p)).ToList
 
    End Function
 
    ' Get Files {directory} {recursive} {exts()}
    Private Function Get_Files(ByVal directory As String, ByVal recursive As Boolean, ParamArray exts() As String) As List(Of IO.FileInfo)
 
        Dim FileExts(exts.Count) As String
        Dim ExtCount As Int32 = 0
 
        For Each ext In exts
            If ext.StartsWith("*") Then
                FileExts(ExtCount) = ext.Substring(1, ext.Length - 1)
            ElseIf Not ext = "*" AndAlso Not ext.StartsWith(".") Then
                FileExts(ExtCount) = ("." & ext)
            ElseIf Not ext = "*" AndAlso ext.StartsWith(".") Then
                FileExts(ExtCount) = ext
            ElseIf ext = "*" Then
                FileExts(ExtCount) = Nothing
            End If
            ExtCount += 1
        Next
 
        Dim searchOpt As IO.SearchOption = If(recursive, IO.SearchOption.AllDirectories, IO.SearchOption.TopDirectoryOnly)
        Dim filenameExtComparer As New FilenameExtensionComparer
        Return IO.Directory.GetFiles(directory, "*", searchOpt).Where(Function(o) FileExts.Contains(IO.Path.GetExtension(o), filenameExtComparer)).Select(Function(p) New IO.FileInfo(p)).ToList
 
    End Function
 
    ' FilenameExtensionComparer (Ignore Case) needed for "Get Files {directory} {recursive} {exts()}" overload.
    Public Class FilenameExtensionComparer : Implements IEqualityComparer(Of String)
 
        Public Function Equals1(s As String, t As String) As Boolean Implements IEqualityComparer(Of String).Equals
            Return String.Compare(s, t, StringComparison.OrdinalIgnoreCase) = 0
        End Function
 
        Public Function GetHashCode1(s As String) As Integer Implements IEqualityComparer(Of String).GetHashCode
            Return s.GetHashCode()
        End Function
 
    End Class
 
#End Region

        #Region " Get MD5 Of File Function "
 
          ' [ Get MD5 Of File Function ]
          '
          ' Examples :
          '
          ' MsgBox(Get_MD5_Of_File("C:\Test.txt"))
 
          Private Function Get_MD5_Of_File(ByVal File As String) As String
              Using MD5_Reader As New System.IO.FileStream(File, IO.FileMode.Open, IO.FileAccess.Read)
                  Using MD5 As New System.Security.Cryptography.MD5CryptoServiceProvider
                      Dim MD5_Byte() As Byte = MD5.ComputeHash(MD5_Reader)
                      Dim MD5_Hex As New System.Text.StringBuilder(MD5.ComputeHash(MD5_Reader).Length * 2)
                      For Number As Integer = 0 To MD5_Byte.Length - 1
                          Application.DoEvents()
                          MD5_Hex.Append(MD5_Byte(Number).ToString("X2")) 
                      Next
                      Return MD5_Hex.ToString().ToLower
                  End Using
              End Using
          End Function
 
       #End Region