具有动态填充下拉列表的域属性（包含与所选元素的关系的目标元素） [英] Domain Property with dynamically filled drop down list (which contains the target elements of a relationship to the selected element)

问题描述

你好，

让我们在图中说我有3个元素A，B和C. A通过参考连接与B和C的关系。

Let's say in a diagram I have 3 elements A, B and C. A is connected via reference relationships to both B and C.

元素A有一个域属性，用户应从下拉列表中选择B和C.

Element A has a Domain Property where the user should choose between B and C from a drop down list.

因此，我必须使用每个元素（此处为：B和C）动态填充该下拉列表，该元素充当与所选源（例如：A）的关系的目标。

So I would have to dynamically fill that drop down list with every element (here: B and C) that acts as a target for a relationship with the selected source (here: A).

我想我看过一个网站或博客，其中提出了我的问题的解决方案，或者至少有一个类似的解决方案，但我可以'找到那个了。也许这里有人知道更多...

I think I saw a website or a blog where a solution to my problem or at least a similar one was presented, but I can't find that one anymore. Maybe somebody here knows more...

如果没有人知道或我只记得错误地看到发布的地方，我想知道：

In case that nobody knows or I just remember wrongly seeing that posted somewhere, I would like to know:

如何从自定义UITypeEditor中获取对元素A的引用？那么我怎么能在UITypeEditor中知道它被调用哪个元素的属性？

How can I get a reference to element A from inside a custom UITypeEditor? So how can I know inside the UITypeEditor for which property of which element it was called?

提前致谢！

推荐答案

我可能错了（仍然在这里学习东西），但我相信你可以在EditValue中使用context参数

I could be wrong (still learning things here) but I believe you can use the context parameter in EditValue

http：// msdn.microsoft.com/en-us/library/yezs56kx.aspx

http://msdn.microsoft.com/en-us/library/yezs56kx.aspx

前往酒店。正在编辑对象整个属性的上下文的Instance属性。

to get to the property. The Instance property of context it looks like points to the object whole property is being edited.

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