Moving from a string into an array and from an array in a string?

[Berndr]

Hi
I must have a move from a string field into an array
and back from an array into a string...
But How?

Here is the Code:

Imports System.Runtime.InteropServices
Public Class Class1
    Public WPFFunktion As String
    Public WPFFeld1 As String
    Public WPFFeld2 As String
    Public WPFFeld3 As String
    Public WPFFeld4 As String
    Public WPFFeld5 As String
    Public WPFInfo As String

    <StructLayout(LayoutKind.Sequential)> Public Structure MYTabelle1
        <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=31)> Public TABFelder As String
    End Structure

    <StructLayout(LayoutKind.Sequential)> Public Structure MYSATZ
        <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=31)> Public FUNKTION As String
        <MarshalAs(UnmanagedType.ByValArray, SizeConst:=4)> Public MyArray() As MYTabelle1
        <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=31)> Public Info As String
    End Structure

    Declare Function CALLMYFUNKTION Lib "CALLMY" (ByRef VARIADATEN As MYSATZ) As Integer

    Public Sub MyCallProg()

 
        Dim CblStatus As Integer

        Dim MYSATZSATZ001 = New MYSATZ

        MYSATZSATZ001.FUNKTION = WPFFunktion
        MYSATZSATZ001.MyArray(0).TABFelder = WPFFeld1
        MYSATZSATZ001.MyArray(1).TABFelder = WPFFeld2
        MYSATZSATZ001.MyArray(2).TABFelder = WPFFeld3
        MYSATZSATZ001.MyArray(3).TABFelder = WPFFeld4
        MYSATZSATZ001.MyArray(4).TABFelder = WPFFeld5
        MYSATZSATZ001.Info = WPFInfo

        CblStatus = CALLMYFUNKTION(MYSATZSATZ001)

        WPFFunktion = MYSATZSATZ001.FUNKTION.Trim(" ")
        WPFFeld1 = MYSATZSATZ001.MyArray(0).TABFelder.Trim(" ")
        WPFFeld2 = MYSATZSATZ001.MyArray(1).TABFelder.Trim(" ")
        WPFFeld3 = MYSATZSATZ001.MyArray(2).TABFelder.Trim(" ")
        WPFFeld4 = MYSATZSATZ001.MyArray(3).TABFelder.Trim(" ")
        WPFFeld5 = MYSATZSATZ001.MyArray(4).TABFelder.Trim(" ")
        WPFInfo = MYSATZSATZ001.Info.Trim(" ")

    End Sub

End Class

This lines are wrong:

MYSATZSATZ001.MyArray(0).TABFelder = WPFFeld1
...

WPFFeld1 = MYSATZSATZ001.MyArray(0).TABFelder.Trim(" ")
...

But why?