问题描述
我有一个用c#编写的简单.NET DLL。
I have a simple .NET DLL written in c#.
在asp-classic或VB.NET中,我可以创建对象并在DLL中调用成员函数而没有任何问题。
但是,这是我的绊脚石,我无法访问类属性。
In asp-classic or VB.NET i can create the object and call a member function in the DLL without any problem.But, and this is my stumbling point, i can't access class properties.
这是示例代码:
[Guid("xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"),
ClassInterface(ClassInterfaceType.None),
ComSourceInterfaces(typeof(IComEvents))]
public class Com : IComInterface
{
public string MyProperty{ get; set; } // <-- NOT ACCESSIBLE
public void MyFunction() // <-- ACCESSIBLE
{
}
}
这是服务器端脚本:
Set com = Server.CreateObject("ns.Com") // WORKS
com.MyProperty = "abc" // GIVES ERROR
com.MyFunction // WORKS
我收到以下错误消息:
对象不支持此属性或方法:MyProperty
Object Doesn't Support This Property or Method: MyProperty
有人可以告诉我,为什么我可以调用函数 MyFunciton,但是如果我想设置属性值,我会得到上面的错误吗?
Can anybody tell me, why i can call the function 'MyFunciton', but if i want to set the property-value, i get the error above?
推荐答案
接口定义中必须包含属性,以使其对COM可见。
Properties must be included in the interface definition to make them visible to COM.
示例:
[Guid("... some GUID ...")]
[ComVisible(true)]
public interface MyClassInterface
{
string MyProperty { get; set; }
bool MyMethod();
}
这篇关于如何使属性对.NET DLL中的COM可见(方法可以正常工作)的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!