打开多个表单，我想知道哪个表单是活动的？ [英] Out of multiple forms open, I want to know which form is active?

问题描述

有一个搜索功能（SearchForm），我将搜索表单中存在的数据中的关键字（假设Form1，Form2，Form3）。有多种形式同时开放。当我单击特定表单（假设Form1）然后搜索关键字时，它应该搜索该活动表单（Form1）。现在，如果我点击另一个表单（Form2），它就会成为我的活动表单。所以现在当我搜索关键字时，它应该搜索该特定表单（Form1）。现在，如果我选择Form2，它仍会在Form1中搜索关键字。我如何实现这个目标？



我尝试过：



我尝试过Focus，但我不知道如何获取活动表单实例，因此我的搜索功能在活动表单上工作（我点击它使其成为当前表单）。

There is a search functionality(SearchForm) where i will search the keyword in data present in forms(Let's say Form1, Form2, Form3). There are multiple forms which are open at same time. When I click on particular form(Suppose Form1) and then search for keyword, then it should search in that active form(Form1). Now, if I click on another form(Form2), then it becomes my active form. So now when I search for keyword, it should search through that particular form(Form1). Right now, if I select Form2, still it searches for keyword in Form1. How do I achieve this?

What I have tried:

I have tried Focus but I am not aware how to get the active form instance so my search functionality works on active form(which i have clicked to make it current form).

推荐答案

文档内容如下： Form.ActiveForm属性（System.Windows.Forms）| Microsoft Docs [ ^ ]？

What about the documentation: Form.ActiveForm Property (System.Windows.Forms) | Microsoft Docs[^]?

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