c# - 来自C#DLL的用户定义对象的VBA数组

背景信息：
我正在建立一个scada系统，它运行在vba上，我寻找c_的一些功能。我用C语言建立了一个动态链接库，得到了动态链接库和VBA之间的基本数据流。

[ComVisible(true), ClassInterface(ClassInterfaceType.AutoDual)]
public class BE_Log
{
    public string DateTime
    {
        [return: MarshalAs(UnmanagedType.BStr)]
        get;
        [param: MarshalAs(UnmanagedType.BStr)]
        set;
    }
    public string User
    {
        [return: MarshalAs(UnmanagedType.BStr)]
        get;
        [param: MarshalAs(UnmanagedType.BStr)]
        set;
    }
    public string SCADA
    {
        [return: MarshalAs(UnmanagedType.BStr)]
        get;
        [param: MarshalAs(UnmanagedType.BStr)]
        set;
    }
    public string Tag
    {
        [return: MarshalAs(UnmanagedType.BStr)]
        get;
        [param: MarshalAs(UnmanagedType.BStr)]
        set;
    }
    public string Area1
    {
        [return: MarshalAs(UnmanagedType.BStr)]
        get;
        [param: MarshalAs(UnmanagedType.BStr)]
        set;
    }
    public string Area2
    {
        [return: MarshalAs(UnmanagedType.BStr)]
        get;
        [param: MarshalAs(UnmanagedType.BStr)]
        set;
    }
    public string Description
    {
        [return: MarshalAs(UnmanagedType.BStr)]
        get;
        [param: MarshalAs(UnmanagedType.BStr)]
        set;
    }
    public string ValueOld
    {
        [return: MarshalAs(UnmanagedType.BStr)]
        get;
        [param: MarshalAs(UnmanagedType.BStr)]
        set;
    }
    public string ValueNew
    {
        [return: MarshalAs(UnmanagedType.BStr)]
        get;
        [param: MarshalAs(UnmanagedType.BStr)]
        set;
    }

    public BE_Log(string DataTime, string User, string SCADA, string Tag, string Area1, string Area2,string Description)
    {
        this.DateTime = DateTime;
        this.User = User;
        this.SCADA = SCADA;
        this.Tag = Tag;
        this.Area1 = Area1;
        this.Area2 = Area2;
        this.Description = Description;
    }

    public BE_Log(string DataTime, string User, string SCADA, string Tag, string Area1, string Area2, string Description, string ValueOld, string ValueNew)
    {
        this.DateTime = DateTime;
        this.User = User;
        this.SCADA = SCADA;
        this.Tag = Tag;
        this.Area1 = Area1;
        this.Area2 = Area2;
        this.Description = Description;
        this.ValueOld = ValueOld;
        this.ValueNew = ValueNew;
    }

}

我就这样回了班：

[ComVisible(true), ClassInterface(ClassInterfaceType.AutoDual)]
public class TI
{
    private BLL_LogBook bll;

    public TI()
    {
        bll = new BLL_LogBook();
    }

    [return: MarshalAs(UnmanagedType.SafeArray, SafeArraySubType=VarEnum.VT_USERDEFINED)]  //  SafeArrayUserDefinedSubType = typeof(BE_Log)
    public BE_Log[] CreateLogBook()
    {
        List<BE_Log> logs = bll.GetLogEntry();
        return logs.ToArray();
    }
}

我的数据层：

public class BLL_LogBook
{
    public List<BE_Log> GetLogEntry()
    {
        List<BE_Log> logs = new List<BE_Log>();
        logs.Add(new BE_Log("05-05-2015", "some user", "scada01", "LA010NDA10CU12XQ12", "Ribe", "Esbjerg", "Some short description"));
        logs.Add(new BE_Log("06-05-2015", "test user", "scada01", "LA010NDA10CU12XB05", "Herning", "KBH", "Some long description"));
        logs.Add(new BE_Log("07-05-2015", "normal user", "scada02", "LA010NDA10CU12YQ01", "Åhus", "Tønder", "Some test description"));

        return logs;
    }
}

静态方法vba正在调用：

static class UnmanagedExports
{
    [DllExport]
    [return: MarshalAs(UnmanagedType.IDispatch)]
    static Object TI_Object()
    {
        return new TI();
    }
}

在vba中，我是这样得到数据的：

Declare Function TI_Object Lib "<path>\\TJI.dll" () As Object

Sub TestTheTestClass()
    Dim TJI As Object
    Set TJI = TI_Object()

    Dim test As Variant
    test = TJI.CreateLogBook()

    Dim log As Variant
    Set log = test(0)

    Debug.Print log.User
End Sub

现在我的问题是：
如何返回类“be_log”的数组或列表
编辑：这就是我被困的地方：http://puu.sh/hnPGe/472ff863d0.png
我一直在尝试制作一些微软的文档，但运气不太好。
我最初遵循的指南是：
http://www.analystcave.com/excel-use-c-sharp-in-excel-vba/
他说了以下几点，但我不完全理解。
如果使用数组作为参数，请确保使用c“ref”
通过引用获取选项，例如ref int[]ar
我认为这与“marshalsa”或我在vba中读取数据的方式有关

最佳答案

如果使用数组作为参数，请确保使用c“ref”get by reference选项，例如ref int[]ar
这是真的，但是您没有任何方法接受数组参数，因此它不适用于您的情况。
是否尝试更改方法签名：

public Log CreateLogBook()

对于返回数组的签名：

public Log[] CreateLogBook()