关于vb的dll文件的问题

VB编写的组件是COM组件，意思是可以通过regsvr32.EXE注册的组件
新建工程，ActiveX DLL
工程名：AAA，生成的组件文件名是AAA.DLL
类模块名：Class1
Public Function TEST(ByVal Char As String) As String
TEST = TextToAsc(Char)
End Function

'字串转ASC
Private Function TextToAsc(ByVal sValues As String) As String
Dim intI As Integer
Dim sTemp As String
Dim sChar As String

For intI = 1 To Len(sValues)
sChar = Asc(Mid(sValues, intI, 1))
sTemp = sTemp & "-" & sChar
Next
TextToPass = Trim(Mid(sTemp, 2, Len(sTemp)))
End Function

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VB和VB.NET 调用COM组件
Dim sMess As String
Dim oSrv As Object
Dim Char As String
Char="ABCEDFG"

Set oSrv = CreateObject("AAA.Class1")
sMess = oSrv.TEST(Char)
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C# 先要在引用里，导入AAA.DLL
using AAA
AAA.Class1 AAA1= new AAA.Class1();
string Char = "ABCDEFG";
string sMess = "";
sMess = AAA1.TEST(Char);
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其他C++ . Delphi......就没试过了。不过调用COM组件都大同小异的。