using System; using System.Runtime.InteropServices; using System.Linq; namespace StackOverflow { [ComVisible(true)] [Guid("2F4C19A6-9BB9-4ACF-90D1-BAF48696740A")] [InterfaceType(ComInterfaceType.InterfaceIsDual)] public interface IMyArrayDemo { [DispId(1)] int Count { [return: MarshalAs(UnmanagedType.I4)] get; } [DispId(2)] object Data { [return: MarshalAs(UnmanagedType.Struct,SafeArraySubType = VarEnum.VT_ARRAY)] get; } [DispId(3)] object Names { [return: MarshalAs(UnmanagedType.Struct,SafeArraySubType = VarEnum.VT_ARRAY)] get; } } [ComVisible(true)] [Guid("7EF75834-22BE-4861-879B-EA0CE20E46E9")] [ClassInterface(ClassInterfaceType.None)] [ProgId("StackOverflow.MyArrayDemo")] public class MyArrayDemo : IMyArrayDemo { object[] mData = new object[10] { 0,1,2,3,5,8,13,21,34 }; string[] mNames = new string[5] {"one","two","three","four","five"}; public int Count { get { return mData.Length; } } public object Data { get { return mData; } } public object Names { get { return mNames.Cast<object>().ToArray(); } } } }
这可以使用以下vbscript进行测试:
Option Explicit Sub Main Dim o,v Set o = CreateObject("StackOverflow.MyArrayDemo") WScript.Echo "Count " & o.Count & " type: " & TypeName(o.Data) & " names: " & TypeName(o.Names) For Each v in o.Data : WScript.Echo CStr(v) : Next For Each v in o.Names : WScript.Echo v : Next End Sub Main
您可以看到这里报告的类型为Variant() – 即:一个变体数组.
C:\Users\pat>\windows\SysWOW64\cscript.exe -nologo arraytest.vbs Count 10 type: Variant() names: Variant() 0 1 1 2 3 5 8 13 21 34 one two three four five