如何在实例化模板时如何在DataTemplate中填充控件？

I have an ItemsControl with a DataTemplate describing how to display each item. The UI I'd like to have inside the DataTemplate is a bad fit to be modelled by XAML and I am going to have to populate a Grid in code.

我有一个带有DataTemplate的ItemsControl，用于描述如何显示每个项目。我想在DataTemplate中使用的UI不适合用XAML建模，我将不得不在代码中填充Grid。

How do I get this code to run every time my DataTemplate is instantiated, so that I get a chance to populate the bits I couldn't express in XAML?

每次我的DataTemplate实例化时如何运行此代码，以便我有机会填充我在XAML中无法表达的位？

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To expand a little, consider a simplified example. The VM looks like this:

为了扩展一点，请考虑一个简化的例子。 VM看起来像这样：

class MyItem
{
    public string Name { get; set; }
    public MyGrid Grid { get; set; } // describes a complex grid-like model
}

The DataTemplate looks like this:

DataTemplate看起来像这样：

<DataTemplate>
    <TextBlock Text="{Binding Name}"/>
    <Grid/>
</DataTemplate>

The <Grid/> is the thing I want to populate in code based on MyItem.Grid. How can I do this?

我想在基于MyItem.Grid的代码中填充 。我怎样才能做到这一点？

(If you are going to say that I shouldn't populate the <Grid/> in code but just use XAML, please answer this question instead)

（如果你要说我不应该在代码中填充 但只是使用XAML，请回答这个问题）

1 个解决方案

#1

You can easily hook the Loaded event on the Grid.

您可以轻松地在网格上挂载Loaded事件。

<Grid Loaded="Grid_Loaded">

private void Grid_Loaded(object sender, ....)
{
    var grid = (Grid)sender;
    var item = (MyItem)grid.DataContext;
    //Go time
}