将固定长度语句从VB6转换为VB.Net

Question

我只是想将VB6函数之一转换为VB.Net,下面是转换语句我面临的问题

Option Strict Off
Option Explicit On
Imports Microsoft.VisualBasic.Compatibility.VB6
Imports System
Imports System.Runtime.InteropServices
Module FunctionCmd_Msg

    Public FunCommand_Msg As Fun_CommandMessage = Fun_CommandMessage.CreateInstance()
    'Function Command Message
    <StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Auto)> _ _
    Public Structure Fun_CommandMessage
        <VBFixedString(1)> Public one As String
        <VBFixedString(1)> Public two As String
        <VBFixedString(3)> Public three As String
        Dim five As String
        <VBFixedString(8)> Public four As String
        Public Shared Function CreateInstance() As Fun_CommandMessage
            Dim result As New Fun_CommandMessage
            result.one = String.Empty
            result.two = String.Empty
            result.three = String.Empty
            result.four = String.Empty
            result.five = String.Empty
        End Function
    End Structure
End Module

假设:

one = "1"
two = "1"
three = "123"
four = "5678"           
five = "testing"
FS = character (field separator)

连接字符串我需要一个固定长度的字符串,如下所示:

one & two & FS & three & FS & five & FS & four

输出:由于四是一个8长度的固定长度字符串,其余4个字符应填充null,如下所示

11 FS 123 FS testing FS 5678XXXX

Answer 1

固定长度的字符串在.NET中根本没有任何意义.Microsoft试图提供类似的类以便于升级,但事实是您应该根据使用情况更改代码:

固定长度字符串在VB6代码中做了什么？这是没有充分理由的吗？然后String在.NET中使用normal .

它是否与C API互操作？然后使用编组在C API调用中设置数组的大小.