c++ - 在 VB.NET 中调用 C++ DLL 文件

Question

我需要在 VB.NET 中使用 C++ DLL 文件.下面是dumpbin对于 DLL 文件。

D:\Program Files\Microsoft Visual Studio 10.0\VC>dumpbin /exports d:\dll\myssort.dll
Microsoft (R) COFF/PE Dumper Version 10.00.30319.01
Copyright (C) Microsoft Corporation.  All rights reserved.
Dump of file d:\dll\ myssort.dll
File Type: DLL
  Section contains the following exports for MySort.dll
    00000000 characteristics
    3D3F006E time date stamp Thu Jul 25 01:00:54 2002
        0.00 version
           1 ordinal base
           1 number of functions
           1 number of names
    ordinal hint RVA      name
          1    0 00001000 MySortA7
  Summary
        1000 .data
        1000 .rdata
        1000 .reloc
        1000 .rsrc
        3000 .text

下面是在 Visual Basic 6.0 对象浏览器中显示的函数定义。

Function SortA7(udtArray As udtA7Rec, nTotalItems As Long) As Long
    Member of MySort. MySort
    Sort the elements of A7-type array

如何在 VB.NET 中调用此方法？

我尝试导入 DLL:

<DllImport("MySort.dll", _
SetLastError:=True, CharSet:=CharSet.Auto)>
Public Function SortA7(ByVal udtArray As MySort.udtA7Rec(), ByVal nTotalItems As Long) As Long
End Function

但是它给我一个错误:

Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

Answer 1

如果它出现在 Visual Basic 6.0 对象浏览器中，它是一个 COM动态链接库。使用 COM 互操作。在 VB.NET ，转到 Project References，转到 COM 选项卡，然后添加 DLL 文件。