WPF如何获得对资源元素的引用？ [英] How to get reference to element in resources, WPF?

问题描述

我对WPF有疑问-我是这项智能技术的新手。所以问题是：

I have problem with WPF - I'm quiet new in this smart technology. So the problem is:

我有一个窗口。在此窗口的资源中，我存储了一个元素-例如一个具有唯一键的网格（假设x：Key = myGrid）。在此网格中，我有一个由名称（x：Name = myTextBox）标识的TextBox。
我的窗口仅包含一个空网格（例如，winGrid）。我以编程方式将myGrid设置为winGrid的子级。现在，在运行时中，我想获得对myTextBox对象的引用。我花了大量的时间在谷歌上搜索，但对我没有任何帮助（FindName和类似的方法）。

I have a window. In this window's resources I have stored an element - eg. a Grid with unique key (assume x:Key="myGrid"). In this Grid I have a TextBox identified by a name (x:Name="myTextBox"). My Window contains only an empty Grid (named eg. winGrid). I programmatically set the myGrid as a child of the winGrid. And now, in runtime, I want to get a reference to the myTextBox object. I spent plenty of time googling, but nothing worked for me (FindName and similar methods).

您有任何想法吗，我需要做些什么才能拿到球

Do you have please any idea, what I have to do to get the ball rolling?

这里是（伪）代码片段了：

Here is (pseudo)code snippet once more:

<Window x:Class="LoginForm.RidicWindow"
    ...>
<Window.Resources>
    <Grid x:Key="myGrid">
        <Border...
        <Grid...
            ...
            <TextBlock x:Name="myTextBlock" Grid.Column="0".../>
         </Grid>
    </Grid>
 </Window.Resources>
 <Grid x:Name="winGrid">
     ...
 </Grid>

现在我将myGrid设置为winGrid的子级：
（类似）

And now I set the myGrid as a child of winGrid: (something like)

winGrid.Childrens.Clear();
winGrid.Childrens.Add((Grid)FindResource(myGrid));

现在我想获得对myTextBlock的引用，它是myGrid的后代。

And now I want to get a reference to myTextBlock, which is descendant of the myGrid.

我尝试了类似的

((Grid)FindResource(myGrid)).FindByName("myTextBlock");

这当然是行不通的。

希望您了解我，我想要得到什么。
非常感谢！

Hope you understand me, what I want to get. Lot of thanks!

推荐答案

您不能这样做（顺便说一句，可以，但这确实很糟糕，丑陋，不建议使用）窗口的资源可用于其他目的。

You can not do this (By the way, you can, but it's really bad, ugly and not recommended) The resources of a window to serve another purpose.

如上所述，您必须创建一个组件（Usercontrol或其他组件）。您寻求的其他选择。
您可以尝试以下我写的内容：

As mentioned, you must create a component (Usercontrol or other).. Although there are some other options for what you seek. You can try some of what I wrote below:

1）创建自定义组件可以是UserControl，Grid或其他任何东西...

1) Creating a custom component may be a UserControl, Grid or anything else...

    <Grid x:Class="Project.MyGridControl"
                 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
                 xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
                 mc:Ignorable="d" 
                 d:DesignHeight="300" d:DesignWidth="300">
<!-- Content -->
    </Grid>

和

        MyGridControl control = new MyGridControl();
        winGrid.Childrens.Add(control);

2）稍微复杂一点：

<Grid  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <!-- Content -->
</Grid>

和

Grid myCustomGrid = XamlReader.Load(uriResource) as Grid;
winGrid.Childrens.Add(myCustomGrid);

在此选项中，您将不需要像网格控件那样实例化。 （我看到它经常在报告中使用）。您应该创建一个.xaml并将其定义为资源。

In this option you will not have like a grid control to instantiate. (I see it often used in reports). You should create a .xaml and define it as a resource.

要查找组件，您应该在可视树中查看（如已回复）...

To find components you should look in the visual tree (as already responded)...

（如何按名称或类型查找WPF控件？）

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