访问MDI属性，但不能访问任何方法 [英] Access MDI property but not any methods

问题描述

我有一个MDI表单，其中包含'countuser'方法。现在我想从Child Form访问此方法。我的MDI表格没有修复，MDI的名称存储在数据库中。







类型t = Type.GetType（namespace + MdiFormName）;

表格c = Activator.CreateInstance（t）作为表格;





我可以访问MDI属性但不能访问任何方法。

这个问题有解决办法吗？

I have one MDI form which has method 'countuser'. Now I want to access this method from Child Form. And my MDI form is not fixed, the name of MDI is stored in Database.



Type t = Type.GetType(namespace + MdiFormName);
Form c = Activator.CreateInstance(t) as Form;


I can access the MDI property but not any methods.
Is there any solution for this problem?

推荐答案

这里是这个想法：谁需要MDI？为什么要折磨自己并吓跑你的用户？

帮自己一个大忙：根本不要使用MDI。没有它，您可以更轻松地实现设计，质量更好。 MDI甚至被微软高度劝阻，事实上，微软将其从WPF中删除并且很难支持它。更重要的是，如果您使用MDI，您将吓跑所有用户。只是不要。请参阅：

http://en.wikipedia.org/wiki/Multiple_document_interface#Disadvantages [ ^ ]，

如何在WPF中创建MDI父窗口？ [ ^ ]。



我可以解释做什么。请看我过去的答案：

如何在WPF中创建MDI父窗口？ [解决方案2 ]，

关于在WPF中使用MDI窗口的问题 [ ^ ]，

麦当劳给出错误 [ ^ ]，

如何设置子窗体最大化，最后一个子窗体最小化 [ ^ ]。

-SA

Here is the idea: who needs MDI, ever? Why torturing yourself and scaring off your users?
Do yourself a great favor: do not use MDI at all. You can do much easier to implement design without it, with much better quality. MDI is highly discouraged even by Microsoft, in fact, Microsoft dropped it out of WPF and will hardly support it. More importantly, you will scare off all your users if you use MDI. Just don't. Please see:
http://en.wikipedia.org/wiki/Multiple_document_interface#Disadvantages[^],
How to Create MDI Parent Window in WPF?[^].

I can explain what to do instead. Please see my past answers:
How to Create MDI Parent Window in WPF? [Solution 2],
Question on using MDI windows in WPF[^],
MDIContainer giving error[^],
How to set child forms maximized, last childform minimized[^].

—SA

yepppp ....我得到了答案......







类型t = Type.GetType（namespace+MdiFormName）;



MethodInfo方法= t.GetMethod（CalluserRights）;



表格c = Activator.CreateInstance（t）作为表格;



//将调用MDI的CalluserRights方法并返回数据表

object datatable = method.Invoke（c，null）;

yepppp....I got the answer...



Type t = Type.GetType("namespace" + "MdiFormName");

MethodInfo method = t.GetMethod("CalluserRights");

Form c = Activator.CreateInstance(t) as Form;

//will call CalluserRights method of MDI and return datatable
object datatable = method.Invoke(c, null);

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