WPF：将组件的高度绑定到另一个组件的高度
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WPF: Binding the height of a component to another's
提问by zxcvbnm
I have, in a window, a Gridthat contains a RadioButton, a TextBoxand a Button, each in column 0, 1, 2, respectively. They all have their heights set to auto.
我在一个窗口中有一个Grid包含 a RadioButton、 aTextBox和 a 的 a Button，分别位于第 0、1、2 列。它们的高度都设置为自动。
Then, in another part of the window, I have another Gridwith a Label, a TextBoxand a Button, in columns 0, 1, and 2. Heights are also set to auto.
然后，在窗口的另一部分，我在第 0、1 和 2 列中还有另一个Grid带有 a Label、 aTextBox和 a Button。高度也设置为自动。
The problem I have is that the first grid's height is smaller than the second's. I guess it's because Label is forcing the second one to be taller. How can I make it so that the first grid is as tall as the second? I tried doing this:
我的问题是第一个网格的高度小于第二个网格的高度。我想这是因为 Label 迫使第二个更高。我怎样才能使第一个网格与第二个网格一样高？我尝试这样做：
Name the textbox in the second grid SomeName.
In the <Grid.ColumnDeclarations>of the first Grid, I changed Height from "auto" to "{Binding ElementName=SomeName, Path=Height}".
将第二个网格中的文本框命名为 SomeName。
在<Grid.ColumnDeclarations>第一个网格中，我将高度从“自动”更改为“{Binding ElementName=SomeName, Path=Height}”。
But that didn't do what I wanted. The size was the same. I guess the Binding is basically getting "auto" and throwing it there, which ends up being the same thing.
但这并没有达到我想要的效果。大小是一样的。我猜绑定基本上是“自动”并将其扔到那里，结果是一样的。
Also, I'm looking for a solution that doesn't involve setting the heights to a fixed value.
另外，我正在寻找一种不涉及将高度设置为固定值的解决方案。
采纳答案by itowlson
Put the two grids in a shared size scope, and use SharedSizeGroupto lock the row heights together:
将两个网格放在共享大小 scope 中，并用于SharedSizeGroup将行高锁定在一起：
<SomeContainer Grid.IsSharedSizeScope="True"> <!-- Could be the Window or some more nearby Panel -->
<Grid>
<Grid.RowDefinitions>
<RowDefinition SharedSizeGroup="LabelAndRadioButtonGroup" />
</Grid.RowDefinitions>
<Label Grid.Row="0" />
</Grid>
<Grid>
<Grid.RowDefinitions>
<RowDefinition SharedSizeGroup="LabelAndRadioButtonGroup" />
</Grid.RowDefinitions>
<RadioButton Grid.Row="0" />
</Grid>
</SomeContainer>
See also How to: Share sizing properties between gridsin MSDN.
另请参见如何：在 MSDN 中的网格之间共享大小属性。
回答by itowlson
Bind to the ActualHeightrather than the Heightproperty:
绑定到ActualHeight而不是Height属性：
<RowDefinition Height="{Binding ActualHeight, ElementName=otherTextBox}" />
