路径中的非法字符 - Directory.GetFiles错误

Question

我有这个搜索字符串。

Dim files As String() = IO.Directory.GetFiles("\\192.168.0.2\shares\be\" & functiicomune.numeclient & "\" & r & " " & codnumeric & "*" & "\" & "PROD\", "*" & codnumeric & "*" & "DECOMPOSITION" & "*" & ".pdf")

我在路上得到非法字符，我不知道为什么。有人可以提供提示吗？

网络上的路径是：

\\192.168.0.2\shares\be\BERTHOUD\BA 390683 L\PROD\BA390683 L - PP. DECOMPOSITION 160630.pdf

numeclient函数代码是：

Public Shared Function numeclient()
    Dim codclient As String = Form1.TextBox4.Text.Substring(0, 2)
    Dim r As String
    Select Case codclient
        Case "BA"
            r = "BERTHOUD"
        Case "CN"
            r = "CARUELLE"
        Case "TT"
            r = "TECNOMA"
        Case "PR"
            r = "PRECICULTURE"
        Case "KR"
            r = "KREMLIN"
    End Select
    Return r
End Function

r和codnumeric代码是：

Dim rgx As New Regex("[^0-9]")
Dim codnumeric As String = rgx.Replace(TextBox4.Text, "")
Dim r As String = TextBox4.Text.Substring(0, 2)

textbox4包含以下形式的字符串：BA390683 L