如何获取从.Net dll中的FoxPro自定义类创建的对象的属性？

Question

这是我的FoxPro类：

DEFINE CLASS clscem AS custom


Height = 102
Width = 212
publicproperty = "this is my initial value"
pubprop = ""
Name = "clscem"


ENDDEFINE

这是我的form1.scx代码：

objSinif = CREATEOBJECT("SinifDeneme.Class")
donenObjSinif = objSinif.f_Metot(thisform.CLSCEM1)
thisform.command1.Caption = donenObjSinif.M_SitringProp

我从.NETPro调用.NET dll作为COM对象。这是我的DLL类DLL：

using System;
using System.IO;
using System.Reflection;
using System.Runtime.InteropServices;

namespace ClsLib
{
    [ClassInterface(ClassInterfaceType.AutoDual)]
    [ProgId("SinifDeneme.Class")]
    [ComVisible(true)]
    public class Sinif
    {
        public string SitringField;
        public string M_SitringProp { get; set; }
        public Sinif f_Metot(object oj)
        {
            StreamWriter sw = File.CreateText(Path.GetDirectoryName(Assembly.GetAssembly(typeof(Sinif)).Location )+ "\\obje.txt");

            Type myObjectType = oj.GetType();

            //Get public properties
            PropertyInfo[] propertyInfo = myObjectType.GetProperties();
            sw.WriteLine("------------- PROPERTY --------------");
            foreach (PropertyInfo info in propertyInfo)
            {
                sw.WriteLine("Name:"+info.Name);
                sw.WriteLine("PropertyType:"+info.PropertyType);
                sw.WriteLine("GetValue():" + info.GetValue(oj,null));
                sw.WriteLine("-------------");
            }

            FieldInfo[] fieldInfo = myObjectType.GetFields();
            sw.WriteLine("------------- FIELDS --------------");
            foreach (FieldInfo info in fieldInfo)
            {
                sw.WriteLine("Name:" + info.Name);
                sw.WriteLine("AssemblyQualifiedName:" + info.FieldType.AssemblyQualifiedName);
                sw.WriteLine("GetValue():" + info.GetValue(oj));
                sw.WriteLine("-------------");
            }

            sw.Flush();
            sw.Close();
            sw.Dispose();



            return new Sinif()
                   {
                       M_SitringProp="SitringProp propertisi",
                       SitringField="Sitring fieldı"
                   };
        }
    }
}

但我无法编写FoxPro对象的属性或字段。而我可以设置DLL的f_Metot返回的C＃对象whicj的属性。获取来自FoxPro的对象属性的问题在哪里？

我不知道COM对象转换。你能解释一下吗？

提前致谢....

Answer 1

Rick Strahl做了a three part article set on interop between VFP and .Net - 虽然它有点老了，但我希望你会在其中一个中找到答案，可能是the first。