CODEWITHSUNDEEP
c#wpfxamldatatemplate
Roman Starkov
Roman Starkov

Reputation: 61382

How to populate a control inside a DataTemplate whenever the template is instantiated?

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.

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?

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

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

The DataTemplate looks like this:

<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?

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

Upvotes: 1

Views: 144

Answers (1)

brunnerh
brunnerh

Reputation: 184376

You can easily hook the Loaded event on the Grid.

<Grid Loaded="Grid_Loaded">

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

Upvotes: 2

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